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      <image:title>Vibrating Piston Engine: Oscillating-Cylinder Animation and Load Comparison</image:title>
      <image:caption>Vibrating Piston Engine diagram</image:caption>
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    <loc>https://www.firgelliauto.com/blogs/mechanisms/wheeler-vertical-tube-boiler</loc>
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      <image:title>Wheeler Vertical Tube Boiler Mechanism: How It Works, Parts, Diagram, and Steam Calculator</image:title>
      <image:caption>Wheeler Vertical Tube Boiler diagram</image:caption>
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    <loc>https://www.firgelliauto.com/blogs/mechanisms/wilkinson-s-steam-turbine</loc>
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      <image:title>Wilkinson&apos;s Steam Turbine: Rotor Rim-speed Comparison</image:title>
      <image:caption>Wilkinson&apos;s Steam Turbine diagram</image:caption>
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    <loc>https://www.firgelliauto.com/blogs/mechanisms/wing-throttle-valve</loc>
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      <image:title>Wing Throttle Valve: Animation and Area-Comparison Calculator</image:title>
      <image:caption>Wing Throttle Valve diagram</image:caption>
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    <loc>https://www.firgelliauto.com/blogs/mechanisms/worthington-boiler</loc>
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      <image:title>Worthington Boiler Mechanism: How the Horizontal Return Fire-Tube Boiler Works, Parts and Uses</image:title>
      <image:caption>Worthington Boiler diagram</image:caption>
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    <loc>https://www.firgelliauto.com/blogs/mechanisms/yarrow-water-tube-boiler</loc>
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      <image:title>Yarrow Water Tube Boiler Mechanism: How It Works, Diagram, Parts, Calculator and Naval Uses</image:title>
      <image:caption>Yarrow Water Tube Boiler diagram</image:caption>
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  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/adjustable-hanger-for-shafting</loc>
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      <image:title>Adjustable Hanger for Shafting: How It Works, Parts, Alignment Formula and Mill Uses Explained</image:title>
      <image:caption>Adjustable Hanger for Shafting diagram</image:caption>
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  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/adjustable-step-bearing</loc>
    <lastmod>2026-10-04T23:19:13-07:00</lastmod>
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      <image:title>Adjustable Step Bearing Mechanism Explained: How It Works, Parts, Diagram and Uses</image:title>
      <image:caption>Adjustable Step Bearing diagram</image:caption>
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  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/adjustable-friction-clutch</loc>
    <lastmod>2026-10-04T23:10:35-07:00</lastmod>
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      <image:title>Adjustable Friction Clutch Mechanism: How It Works, Diagram, Parts, Formula and Uses Explained</image:title>
      <image:caption>Adjustable Friction Clutch diagram</image:caption>
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  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/adjustable-post-hanger</loc>
    <lastmod>2026-10-04T20:56:59-07:00</lastmod>
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      <image:title>Adjustable Post Hanger Mechanism Explained: How It Works, Parts, Diagram, and Load Formula</image:title>
      <image:caption>Adjustable Post Hanger diagram</image:caption>
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  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/adjustable-universal-sheave</loc>
    <lastmod>2026-10-04T23:21:24-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/adjustable-universal-sheave.png?v=1777222758</image:loc>
      <image:title>Adjustable Universal Sheave Mechanism Explained: How It Works, Parts, Diagram, and Uses</image:title>
      <image:caption>Adjustable Universal Sheave diagram</image:caption>
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  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/right-angle-shaft-coupling</loc>
    <lastmod>2026-10-04T17:41:56-07:00</lastmod>
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      <image:title>Right-angle Shaft Coupling Mechanism Explained: How It Works, Diagram, Parts, and Uses</image:title>
      <image:caption>Right-angle Shaft Coupling diagram</image:caption>
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  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/automatic-bench-clamp</loc>
    <lastmod>2026-10-05T09:00:58-07:00</lastmod>
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      <image:title>Automatic Bench Clamp: Straight-Line Toggle Motion and Force Estimate</image:title>
      <image:caption>Automatic Bench Clamp diagram</image:caption>
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  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/automatic-screw-cutting-die</loc>
    <lastmod>2026-10-05T09:23:41-07:00</lastmod>
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      <image:title>Automatic Screw-cutting Die Mechanism Explained: How Self-Opening Die Heads Work, Parts and Uses</image:title>
      <image:caption>Automatic Screw-cutting Die diagram</image:caption>
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  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/ball-bearings</loc>
    <lastmod>2026-10-05T10:07:29-07:00</lastmod>
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      <image:title>Ball Bearings: Rolling Motion, Contact Patch and Basic Life Equations</image:title>
      <image:caption>Ball Bearings diagram</image:caption>
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  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/ball-socket-universal-joints</loc>
    <lastmod>2026-10-04T21:46:23-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/ball-socket-universal-joints.png?v=1777222819</image:loc>
      <image:title>Ball Socket Universal Joints Mechanism Explained: How It Works, Parts, Diagram and Uses</image:title>
      <image:caption>Ball Socket Universal Joints diagram</image:caption>
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  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/band-saw</loc>
    <lastmod>2026-10-02T08:20:34-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/band-saw.png?v=1777222831</image:loc>
      <image:title>Band Saw Mechanism Explained: How It Works, Parts, Diagram, SFPM Formula and Calculator</image:title>
      <image:caption>Band Saw diagram</image:caption>
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  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/bark-or-cob-mill</loc>
    <lastmod>2026-10-04T20:12:15-07:00</lastmod>
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      <image:title>Bark or Cob Mill Mechanism: How It Works, Parts, Diagram, Formula and Uses Explained</image:title>
      <image:caption>Bark or Cob Mill diagram</image:caption>
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  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/helve-trip-hammer</loc>
    <lastmod>2026-10-05T06:13:22-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/helve-trip-hammer.png?v=1777222855</image:loc>
      <image:title>Helve Trip Hammer: Motion and Ideal Energy Calculator | FIRGELLI</image:title>
      <image:caption>Helve Trip Hammer diagram</image:caption>
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  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/belt-holder</loc>
    <lastmod>2026-10-04T21:48:54-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/belt-holder.png?v=1777222868</image:loc>
      <image:title>Belt Holder: Fixed Roller Support, Belt Speed and Roller Loads</image:title>
      <image:caption>Belt Holder diagram</image:caption>
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  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/blacksmith-s-helper</loc>
    <lastmod>2026-10-04T19:45:44-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/blacksmith-s-helper.png?v=1777222889</image:loc>
      <image:title>Blacksmith&apos;s Helper: Spring-toggle Power Hammer and Ram Energy Calculator</image:title>
      <image:caption>Blacksmith&apos;s Helper diagram</image:caption>
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  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/bobbin-winder</loc>
    <lastmod>2026-10-04T19:57:50-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/bobbin-winder.png?v=1777222900</image:loc>
      <image:title>Bobbin Winder: Yarn Path, Traverse and Surface-speed Calculator</image:title>
      <image:caption>Bobbin Winder diagram</image:caption>
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  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/bogardus-mill</loc>
    <lastmod>2026-10-04T19:57:53-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/bogardus-mill.png?v=1777222911</image:loc>
      <image:title>Bogardus Mill Mechanism Explained: How the Eccentric Horizontal Grinding Mill Works</image:title>
      <image:caption>Bogardus Mill diagram</image:caption>
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  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/bye-pass-cock-or-valve</loc>
    <lastmod>2026-10-04T22:09:57-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/bye-pass-cock-or-valve.png?v=1777222930</image:loc>
      <image:title>Bypass Cock or Valve: Parallel-path Animation and Handle Lever Calculator</image:title>
      <image:caption>Bye Pass Cock or Valve diagram</image:caption>
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  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/circulating-screw-propeller-and-mixing-tank</loc>
    <lastmod>2026-10-04T21:31:44-07:00</lastmod>
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      <image:title>Circulating Screw Propeller and Mixing Tank Mechanism: How It Works, Parts, Diagram, Uses</image:title>
      <image:caption>Circulating Screw Propeller and Mixing Tank diagram</image:caption>
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  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/closure-of-rollers</loc>
    <lastmod>2026-10-04T20:51:43-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/closure-of-rollers.png?v=1777222962</image:loc>
      <image:title>Closure of Rollers: Mechanism, How It Works, Diagrams, Videos, Detailed Explanation</image:title>
      <image:caption>Closure of Rollers diagram</image:caption>
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  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/clutch-and-gear</loc>
    <lastmod>2026-10-04T21:11:03-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/clutch-and-gear.png?v=1777222982</image:loc>
      <image:title>Clutch and Gear Mechanism: How It Works, Parts, Diagram, Formula and Industrial Uses</image:title>
      <image:caption>Clutch and Gear diagram</image:caption>
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  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/collapsing-tap</loc>
    <lastmod>2026-10-04T21:28:50-07:00</lastmod>
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      <image:title>Collapsing Tap Mechanism Explained: How Chasers Retract for Straight Withdrawal in Production Tapping</image:title>
      <image:caption>Collapsing Tap diagram</image:caption>
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  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/collar-bearing-and-step</loc>
    <lastmod>2026-10-04T21:29:38-07:00</lastmod>
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      <image:title>Collar Bearing and Step Mechanism Explained: Parts, Diagram, Formula, and Uses</image:title>
      <image:caption>Collar Bearing and Step diagram</image:caption>
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  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/combined-punch-and-shears</loc>
    <lastmod>2026-10-04T21:27:14-07:00</lastmod>
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      <image:title>Combined Punch and Shears Mechanism: How It Works, Parts, Clearance Formula and Uses</image:title>
      <image:caption>Combined Punch and Shears diagram</image:caption>
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  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/combined-ratchet-and-hand-feed-gear</loc>
    <lastmod>2026-10-04T21:10:01-07:00</lastmod>
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      <image:title>Combined Ratchet and Hand-feed Gear: Worm-wheel Nut and Hand-screw Adjustment</image:title>
      <image:caption>Combined Ratchet and Hand-feed Gear diagram</image:caption>
    </image:image>
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  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/combined-tire-upsetting-and-punching-machine</loc>
    <lastmod>2026-10-04T20:59:37-07:00</lastmod>
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      <image:title>Combined Tire Upsetting and Punching Machine: How It Works, Parts, Diagram, and Wheelwright Uses</image:title>
      <image:caption>Combined Tire Upsetting and Punching Machine diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/compound-lever-cutting-pliers</loc>
    <lastmod>2026-10-04T19:41:58-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/compound-lever-cutting-pliers.png?v=1777223056</image:loc>
      <image:title>Compound Lever Cutting Pliers Mechanism: How Stacked Levers Multiply Jaw Force Explained</image:title>
      <image:caption>Compound Lever Cutting Pliers diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/cone-clutch</loc>
    <lastmod>2026-10-04T19:50:32-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/cone-clutch.png?v=1777223077</image:loc>
      <image:title>Cone Clutch Mechanism Explained: How It Works, Diagram, Formula, Calculator and Uses</image:title>
      <image:caption>Cone Clutch diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/conical-pivot-bearing</loc>
    <lastmod>2026-10-04T19:54:32-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/conical-pivot-bearing.png?v=1777223089</image:loc>
      <image:title>Conical Pivot Bearing Mechanism: How It Works, Parts, Formula and Uses Explained</image:title>
      <image:caption>Conical Pivot Bearing diagram</image:caption>
    </image:image>
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  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/conical-roller-thrust-bearing</loc>
    <lastmod>2026-10-04T20:04:57-07:00</lastmod>
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      <image:title>Conical Roller Thrust Bearing: Geometry, Motion and Surface-Speed Calculator</image:title>
      <image:caption>Conical Roller Thrust Bearing diagram</image:caption>
    </image:image>
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  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/continual-barrel-elevator</loc>
    <lastmod>2026-10-04T19:46:49-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/continual-barrel-elevator.png?v=1777223114</image:loc>
      <image:title>Continual Barrel Elevator Mechanism Explained: How It Works, Parts, Throughput Formula &amp; Diagram</image:title>
      <image:caption>Continual Barrel Elevator diagram</image:caption>
    </image:image>
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  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/continuous-traversing-roller</loc>
    <lastmod>2026-10-04T20:11:02-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/continuous-traversing-roller.png?v=1777223127</image:loc>
      <image:title>Continuous Traversing Roller Mechanism Explained: How It Works, Parts, Diagram and Uses</image:title>
      <image:caption>Continuous Traversing Roller diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/cop-winder</loc>
    <lastmod>2026-10-04T20:12:47-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/cop-winder.png?v=1777223138</image:loc>
      <image:title>Cop Winder: Pivoted Yarn Guide, Animation and Winding-Speed Calculator</image:title>
      <image:caption>Cop Winder diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/crushing-mill-chasers</loc>
    <lastmod>2026-10-04T20:40:08-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/crushing-mill-chasers.png?v=1777223151</image:loc>
      <image:title>Crushing Mill / Chasers Mechanism Explained: How Edge Runner Mills Work, Parts and Uses</image:title>
      <image:caption>Crushing Mill / Chasers diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/curved-step-bearing</loc>
    <lastmod>2026-10-04T20:47:58-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/curved-step-bearing.png?v=1777223163</image:loc>
      <image:title>Curved Step Bearing Mechanism: How It Works, Diagram, Parts, Formula and Uses Explained</image:title>
      <image:caption>Curved Step Bearing diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/disc-shears</loc>
    <lastmod>2026-10-04T21:36:02-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/disc-shears.png?v=1777223178</image:loc>
      <image:title>Disc Shears Mechanism: How Rotary Slitting Blades, Clearance &amp; Cutting Zone Work</image:title>
      <image:caption>Disc Shears diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/disc-slicer</loc>
    <lastmod>2026-10-04T21:37:17-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/disc-slicer.png?v=1777223189</image:loc>
      <image:title>Disc Slicer: Slotted Root-Slicing Disc, Knife Motion and Ideal Rate Calculator</image:title>
      <image:caption>Disc Slicer diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/double-conic-rope-drum</loc>
    <lastmod>2026-10-04T21:56:47-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/double-conic-rope-drum.png?v=1777223201</image:loc>
      <image:title>Double Conic Rope Drum Mechanism Explained: How It Works, Parts, Torque Formula and Uses</image:title>
      <image:caption>Double Conic Rope Drum diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/double-cylinder-planer</loc>
    <lastmod>2026-10-04T21:58:29-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/double-cylinder-planer.png?v=1777223215</image:loc>
      <image:title>Double Cylinder Lumber Planer: Cutterheads, Feed and Material Removal</image:title>
      <image:caption>Double Cylinder Planer diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/double-screw-gear-hoist</loc>
    <lastmod>2026-10-04T22:07:37-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/double-screw-gear-hoist.png?v=1777223229</image:loc>
      <image:title>Double Screw-Gear Chain Hoist: Two-Worm Animation and Calculator</image:title>
      <image:caption>Double Screw-gear Hoist diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/double-toggle-joint-friction-clutch</loc>
    <lastmod>2026-10-04T22:11:28-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/double-toggle-joint-friction-clutch.png?v=1777223242</image:loc>
      <image:title>Double Toggle-joint Friction Clutch Mechanism: How It Works, Diagram, Formula and Uses Explained</image:title>
      <image:caption>Double Toggle-joint Friction Clutch diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/double-toggle-joint-screw-press</loc>
    <lastmod>2026-10-04T22:11:31-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/double-toggle-joint-screw-press.png?v=1777223254</image:loc>
      <image:title>Double Toggle-joint Screw Press Mechanism Explained: How It Works, Parts, Formula &amp; Uses</image:title>
      <image:caption>Double Toggle-joint Screw Press diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/double-acting-screwdriver</loc>
    <lastmod>2026-10-04T21:51:27-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/double-acting-screwdriver.png?v=1777223265</image:loc>
      <image:title>Double-acting Screwdriver: Nested Opposite-Hand Spindles and Ideal Torque Calculator</image:title>
      <image:caption>Double-acting Screwdriver diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/drawing-and-throstle-twisting</loc>
    <lastmod>2026-10-04T22:22:39-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/drawing-and-throstle-twisting.png?v=1777223277</image:loc>
      <image:title>Drawing and Throstle Twisting Mechanism Explained: How It Works, Parts, Diagram and Formula</image:title>
      <image:caption>Drawing and Throstle Twisting diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/drilling-machine</loc>
    <lastmod>2026-10-04T22:24:55-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/drilling-machine.png?v=1777223291</image:loc>
      <image:title>Drilling Machine: Spindle Rotation, Quill Feed and Cutting-Speed Calculator</image:title>
      <image:caption>Drilling Machine diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/drilling-machine-clamp</loc>
    <lastmod>2026-10-04T22:27:11-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/drilling-machine-clamp.png?v=1777223306</image:loc>
      <image:title>Drilling Machine Clamp Mechanism Explained: How It Works, Parts, Diagram, Formula and Calculator</image:title>
      <image:caption>Drilling Machine Clamp diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/eccentric-line-coupling</loc>
    <lastmod>2026-10-04T22:41:55-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/eccentric-line-coupling.png?v=1777223321</image:loc>
      <image:title>Eccentric Line Coupling: How It Works, Parts, Diagram, and Parallel Offset Shaft Alignment Uses</image:title>
      <image:caption>Eccentric Line Coupling diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/feed-wheel</loc>
    <lastmod>2026-10-05T16:21:56-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/feed-wheel.png?v=1777223340</image:loc>
      <image:title>Feed Wheel: Roller Travel and Slip Calculator | FIRGELLI</image:title>
      <image:caption>Feed Wheel diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/flexible-link-coupling</loc>
    <lastmod>2026-10-05T13:01:49-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/flexible-link-coupling.png?v=1777223351</image:loc>
      <image:title>Flexible Link Coupling: Ideal Link Force and Stress | FIRGELLI</image:title>
      <image:caption>Flexible Link Coupling diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/flexible-universal-steam-joint</loc>
    <lastmod>2026-10-05T13:01:52-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/flexible-universal-steam-joint.png?v=1777223362</image:loc>
      <image:title>Flexible Universal Steam Joint: Motion and Thermal Growth | FIRGELLI</image:title>
      <image:caption>Flexible Universal Steam Joint diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/friction-clutch</loc>
    <lastmod>2026-10-05T19:01:34-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/friction-clutch.png?v=1777223373</image:loc>
      <image:title>Friction Clutch: Torque Capacity and Mean Radius | FIRGELLI</image:title>
      <image:caption>Friction Clutch diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/friction-drop-hammer</loc>
    <lastmod>2026-10-05T19:36:23-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/friction-drop-hammer.png?v=1777223396</image:loc>
      <image:title>Friction Drop Hammer: Energy and Free-Fall Speed | FIRGELLI</image:title>
      <image:caption>Friction Drop Hammer diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/friction-pin-clutch</loc>
    <lastmod>2026-10-05T19:58:10-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/friction-pin-clutch-mechanism.png?v=1791255489</image:loc>
      <image:title>Friction Pin Clutch: Band Coupling and Torque Calculator</image:title>
      <image:caption>Friction Pin Clutch — schematic of the mechanism.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/gig-saw</loc>
    <lastmod>2026-10-06T18:01:15-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/gig-saw.png?v=1777223421</image:loc>
      <image:title>Gig Saw: Crank Motion and Feed-Rate Calculator | FIRGELLI</image:title>
      <image:caption>Gig Saw diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/goubet-s-universal-shaft-coupling</loc>
    <lastmod>2026-10-06T09:05:31-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/goubet-s-universal-shaft-coupling-mechanism.png?v=1791302730</image:loc>
      <image:title>Goubet&apos;s Universal Shaft Coupling: Animation and Speed Calculator</image:title>
      <image:caption>Goubet&apos;s Universal Shaft Coupling — schematic of the mechanism.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/grinding-mill</loc>
    <lastmod>2026-10-06T01:39:49-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/grinding-mill.png?v=1777223452</image:loc>
      <image:title>Tumbling Grinding Mill: Critical Speed Calculator | FIRGELLI</image:title>
      <image:caption>Grinding Mill diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/portable-drill</loc>
    <lastmod>2026-10-04T11:30:49-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/portable-drill.png?v=1777223466</image:loc>
      <image:title>Portable Drill Power Train: Declared Ratio, Torque and Speed</image:title>
      <image:caption>Portable Drill diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/hanging-shaft</loc>
    <lastmod>2026-10-06T01:08:15-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/hanging-shaft-mechanism_832f41ac-6f8c-4a30-b4ca-09c193873bb7.png?v=1791274095</image:loc>
      <image:title>Hanging Shaft: Overhead Belt Drive and Shaft-Span Calculator</image:title>
      <image:caption>Hanging Shaft — schematic of the mechanism.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/harrington-chain-hoist</loc>
    <lastmod>2026-10-05T05:26:49-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/harrington-chain-hoist.png?v=1777223489</image:loc>
      <image:title>Harrington CB Hoist: Catalog Pull and Chain Travel | FIRGELLI</image:title>
      <image:caption>Harrington Chain Hoist diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/harvester-or-mowing-machine</loc>
    <lastmod>2026-10-05T05:46:28-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/harvester-or-mowing-machine.png?v=1777223501</image:loc>
      <image:title>Harvester and Mower Field-Capacity Calculator | FIRGELLI</image:title>
      <image:caption>Harvester or Mowing Machine diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/hopper-and-bell</loc>
    <lastmod>2026-10-05T06:49:21-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/hopper-and-bell.png?v=1777223512</image:loc>
      <image:title>Hopper and Bell: Furnace Charging and Event-Count Example | FIRGELLI</image:title>
      <image:caption>Hopper and Bell diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/knitting-machine</loc>
    <lastmod>2026-10-05T10:10:41-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/knitting-machine.png?v=1777223542</image:loc>
      <image:title>Knitting Machine: Latch-Needle Cycle and Timing Calculator | FIRGELLI</image:title>
      <image:caption>Knitting Machine diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/knitting-machine-cam-mechanism</loc>
    <lastmod>2026-10-05T10:12:34-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/knitting-machine-cam-mechanism.png?v=1777223553</image:loc>
      <image:title>Knitting Cam Mechanism: Straight-Flank Speed Calculator | FIRGELLI</image:title>
      <image:caption>Knitting Machine Cam Mechanism diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/lapidary-or-lithological-lathe</loc>
    <lastmod>2026-10-04T04:04:57-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/lapidary-or-lithological-lathe.png?v=1777223565</image:loc>
      <image:title>Lapidary or Lithological Lathe Mechanism: How It Works, Parts, Surface Speed Formula &amp; Diagram</image:title>
      <image:caption>Lapidary or Lithological Lathe diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/lathe-speed-motion-engagement</loc>
    <lastmod>2026-10-06T21:46:36-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/lathe-speed-motion-engagement.png?v=1777223576</image:loc>
      <image:title>Lathe Back-Gear Engagement: Eccentric Shaft, Direct Pin and Speed Calculator</image:title>
      <image:caption>Lathe Speed-motion Engagement diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/lense-grinding-machine</loc>
    <lastmod>2026-10-04T20:59:46-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/lense-grinding-machine.png?v=1777223587</image:loc>
      <image:title>Lens-grinding Machine: Historical Motion and Ideal Radius Geometry</image:title>
      <image:caption>Lense-grinding Machine diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/lenticular-bearing</loc>
    <lastmod>2026-10-04T21:02:55-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/lenticular-bearing.png?v=1777223601</image:loc>
      <image:title>Lenticular Step Bearing: Pressure-Oil-Fed Vertical-Shaft Arrangement</image:title>
      <image:caption>Lenticular Bearing diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/loom-dobby-mechanism</loc>
    <lastmod>2026-10-04T23:59:42-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/loom-dobby-mechanism.png?v=1777223612</image:loc>
      <image:title>Loom Dobby Mechanism: Hook, Knife and Heald-Shaft Selection</image:title>
      <image:caption>Loom Dobby Mechanism diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/loom-jacquard-mechanism</loc>
    <lastmod>2026-10-05T00:00:58-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/loom-jacquard-mechanism.png?v=1777223623</image:loc>
      <image:title>Jacquard Loom: Hooks, Harness Cords and Repeated Ties</image:title>
      <image:caption>Loom Jacquard Mechanism diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/lubrication-of-a-hanging-bearing</loc>
    <lastmod>2026-10-05T00:01:01-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/lubrication-of-a-hanging-bearing.png?v=1777223636</image:loc>
      <image:title>Hanger Journal Bearing Lubrication: Oil Ring and Sommerfeld Number</image:title>
      <image:caption>Lubrication of a Hanging Bearing diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/mangle-rack-form-2</loc>
    <lastmod>2026-10-05T00:15:55-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/mangle-rack-form-2.png?v=1777223647</image:loc>
      <image:title>Mangle-Rack Form 2: Guided Pinion and Straight-Run Estimate</image:title>
      <image:caption>Mangle-rack (form 2) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/mangle-rack-form-3</loc>
    <lastmod>2026-10-05T00:15:59-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/mangle-rack-form-3.png?v=1777223662</image:loc>
      <image:title>Mangle-Rack Form 3: Module-Defined Pinion and Straight Run</image:title>
      <image:caption>Mangle-rack (form 3) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/mangle-wheel-eccentric</loc>
    <lastmod>2026-10-05T00:17:54-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/mangle-wheel-eccentric.png?v=1777223673</image:loc>
      <image:title>Eccentric Mangle Wheel: Guided Pinion and Variable-Speed Reversal</image:title>
      <image:caption>Mangle-wheel (eccentric) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/modern-cotton-gin</loc>
    <lastmod>2026-10-05T00:53:48-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/modern-cotton-gin.png?v=1777223687</image:loc>
      <image:title>Modern Saw Cotton Gin: Cylinder Kinematics and Measured Output</image:title>
      <image:caption>Modern Cotton Gin diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/multiple-drilling-machine</loc>
    <lastmod>2026-10-05T08:42:22-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/multiple-drilling-machine.png?v=1777223698</image:loc>
      <image:title>Multiple-Spindle Drilling Head: Common Drive and Simultaneous Feed</image:title>
      <image:caption>Multiple Drilling Machine diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/multiple-plate-friction-clutch</loc>
    <lastmod>2026-10-05T08:44:15-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/multiple-plate-friction-clutch.png?v=1777223711</image:loc>
      <image:title>Multiple-Plate Friction Clutch: Active Interfaces and Ideal Torque</image:title>
      <image:caption>Multiple Plate Friction Clutch diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/oil-circulating-step</loc>
    <lastmod>2026-10-05T09:25:57-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/oil-circulating-step.png?v=1777223722</image:loc>
      <image:title>Oil-Circulating Step: Hiscox Item 1283</image:title>
      <image:caption>Oil Circulating Step diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/pendulum-saw</loc>
    <lastmod>2026-10-05T10:20:52-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/pendulum-saw.png?v=1777223735</image:loc>
      <image:title>Pendulum Saw: Swing Geometry and Blade Tip Speed</image:title>
      <image:caption>Pendulum Saw diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/pin-clutch</loc>
    <lastmod>2026-10-04T07:35:36-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/pin-clutch.png?v=1777223750</image:loc>
      <image:title>Radial Pin Clutch: Clearance and One-Revolution Timing</image:title>
      <image:caption>Pin Clutch diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/plate-sawing-machine</loc>
    <lastmod>2026-10-04T09:17:33-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/plate-sawing-machine.png?v=1777223762</image:loc>
      <image:title>Plate Sawing Machine: Declared Circular-Blade Traverse Geometry</image:title>
      <image:caption>Plate Sawing Machine diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/polishing-machine</loc>
    <lastmod>2026-10-04T10:48:39-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/polishing-machine.png?v=1777223774</image:loc>
      <image:title>Polishing Machine: Connected Flat-Platen Topology and Preston Ledger</image:title>
      <image:caption>Polishing Machine diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/polishing-machine-form</loc>
    <lastmod>2026-10-04T10:55:34-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/polishing-machine-form.png?v=1777223786</image:loc>
      <image:title>Abrasive-Belt Polishing Machine: Exact Loop Geometry and Speed</image:title>
      <image:caption>Polishing Machine (form) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/power-rumbling-mill</loc>
    <lastmod>2026-10-04T12:44:34-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/power-rumbling-mill.png?v=1777223798</image:loc>
      <image:title>Power Rumbling Mill: Ideal Wall-Point Rotation Ledger</image:title>
      <image:caption>Power Rumbling Mill diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/power-stamping-press</loc>
    <lastmod>2026-10-04T12:50:02-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/power-stamping-press.png?v=1777223809</image:loc>
      <image:title>Power Stamping Press: Declared Flywheel-Energy Ledger</image:title>
      <image:caption>Power Stamping Press diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/pump-drill-stock</loc>
    <lastmod>2026-10-04T15:21:05-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/pump-drill-stock.png?v=1777223825</image:loc>
      <image:title>Pump Drill Stock: Declared Cord-Travel Ledger</image:title>
      <image:caption>Pump Drill Stock diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/rail-cutting-saw</loc>
    <lastmod>2026-10-04T16:41:40-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/rail-cutting-saw.png?v=1777223836</image:loc>
      <image:title>Rail-Cutting Saw: Declared Wheel-Speed Ledger</image:title>
      <image:caption>Rail-cutting Saw diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/reversing-gear</loc>
    <lastmod>2026-10-05T06:09:06-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/reversing-gear.png?v=1777223849</image:loc>
      <image:title>Reversing Gear Mechanism: How It Works, Parts, Diagram and Stephenson Link Motion Explained</image:title>
      <image:caption>Reversing Gear diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/revolving-rapid-blow-hammer</loc>
    <lastmod>2026-10-05T08:05:50-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/revolving-rapid-blow-hammer.png?v=1777223860</image:loc>
      <image:title>Revolving Rapid-blow Hammer: Rotating Arms and Cam Motion</image:title>
      <image:caption>Revolving Rapid-blow Hammer diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/roller-motion-in-wool-combing</loc>
    <lastmod>2026-10-04T17:42:14-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/roller-motion-in-wool-combing.png?v=1777223895</image:loc>
      <image:title>Roller Motion in Wool Combing: How It Works, Parts, Diagram and Draw-Off Ratio Formula</image:title>
      <image:caption>Roller Motion in Wool Combing diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/roller-wheel-anti-friction-bearing</loc>
    <lastmod>2026-10-04T17:42:19-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/roller-wheel-anti-friction-bearing.png?v=1777223916</image:loc>
      <image:title>Roller Wheel Anti-friction Bearing Mechanism: How Cylindrical Rollers Work, Parts &amp; L10 Life</image:title>
      <image:caption>Roller Wheel Anti-friction Bearing diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/safety-tackle</loc>
    <lastmod>2026-10-04T17:42:59-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/safety-tackle.png?v=1777223928</image:loc>
      <image:title>Safety Tackle Mechanism: How It Works, Parts, Diagram, Formula and Industrial Uses Explained</image:title>
      <image:caption>Safety Tackle diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/sawing-machine-bed-feed</loc>
    <lastmod>2026-10-04T17:46:47-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/sawing-machine-bed-feed.png?v=1777223940</image:loc>
      <image:title>Sawing Machine Bed Feed Mechanism Explained: Pawl, Ratchet &amp; Feed Screw Diagram</image:title>
      <image:caption>Sawing Machine Bed Feed diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/screw-bench-clamp</loc>
    <lastmod>2026-10-04T17:47:00-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/screw-bench-clamp.png?v=1777223951</image:loc>
      <image:title>Screw Bench Clamp Mechanism Explained: How It Works, Parts, Diagram and Clamping Force</image:title>
      <image:caption>Screw Bench Clamp diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/screw-traversing-ball-bearing</loc>
    <lastmod>2026-10-04T17:47:05-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/screw-traversing-ball-bearing.png?v=1777223962</image:loc>
      <image:title>Screw Traversing Ball Bearing Mechanism: How It Works, Diagram, Parts, Formula and Uses</image:title>
      <image:caption>Screw Traversing Ball Bearing diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/seamless-tube-making</loc>
    <lastmod>2026-10-04T17:47:11-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/seamless-tube-making.png?v=1777223974</image:loc>
      <image:title>Seamless Tube Making Mechanism: How the Mannesmann Rotary Piercing Process Works</image:title>
      <image:caption>Seamless Tube Making diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/sewing-machine-shuttle</loc>
    <lastmod>2026-10-04T17:47:44-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/sewing-machine-shuttle.png?v=1777223999</image:loc>
      <image:title>Sewing-machine Shuttle Mechanism: How Rotary and Oscillating Hooks Form a Lockstitch</image:title>
      <image:caption>Sewing-machine Shuttle diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/sewing-machine</loc>
    <lastmod>2026-10-04T17:47:42-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/sewing-machine.png?v=1777224021</image:loc>
      <image:title>Sewing-machine Mechanism Explained: Lockstitch Parts, Hook Timing Diagram and Speed Formula</image:title>
      <image:caption>Sewing-machine diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/sewing-machine-feed-bar</loc>
    <lastmod>2026-10-04T17:47:43-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/sewing-machine-feed-bar.png?v=1777224032</image:loc>
      <image:title>Sewing-machine Feed Bar Mechanism Explained: Four-Motion Feed, Parts, Diagram &amp; Timing</image:title>
      <image:caption>Sewing-machine Feed Bar diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/shuttle-motion</loc>
    <lastmod>2026-10-07T10:48:55-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/shuttle-motion.png?v=1777224050</image:loc>
      <image:title>Shuttle Motion Mechanism: How Slider-Crank Reciprocation Works, Parts, Uses &amp; Diagram</image:title>
      <image:caption>Shuttle Motion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/sight-feed-lubricator</loc>
    <lastmod>2026-10-07T10:59:57-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/sight-feed-lubricator.png?v=1777224059</image:loc>
      <image:title>Sight-feed Lubricator Mechanism: How It Works, Parts, Drop-Rate Calculator and Diagram</image:title>
      <image:caption>Sight-feed Lubricator diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/simple-friction-pulley</loc>
    <lastmod>2026-10-04T18:30:11-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/simple-friction-pulley.png?v=1777224072</image:loc>
      <image:title>Simple Friction Pulley Mechanism: How It Works, Capstan Equation, Parts, and Uses Explained</image:title>
      <image:caption>Simple Friction Pulley diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/single-cylinder-printing-press</loc>
    <lastmod>2026-10-04T17:48:12-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/single-cylinder-printing-press.png?v=1777224083</image:loc>
      <image:title>Single Cylinder Printing Press Mechanism: How It Works, Diagram, Parts, and Uses Explained</image:title>
      <image:caption>Single Cylinder Printing Press diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/spherical-step-bearing</loc>
    <lastmod>2026-10-04T17:48:26-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/spherical-step-bearing.png?v=1777224094</image:loc>
      <image:title>Spherical Step Bearing Mechanism: How It Works, Parts, Diagram and Uses in Mills and Line Shafts</image:title>
      <image:caption>Spherical Step Bearing diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/spool-winding-machine</loc>
    <lastmod>2026-10-04T17:48:37-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/spool-winding-machine.png?v=1777224106</image:loc>
      <image:title>Spool Winding Machine Mechanism Explained: How It Works, Parts, Diagram, Calculator and Uses</image:title>
      <image:caption>Spool Winding Machine diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/spring-hammer</loc>
    <lastmod>2026-10-04T17:48:43-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/spring-hammer.png?v=1777224125</image:loc>
      <image:title>Spring Hammer Mechanism: How It Works, Parts, Diagram, and Blow Energy Calculator</image:title>
      <image:caption>Spring Hammer diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/spring-motor-for-sewing-machine</loc>
    <lastmod>2026-10-04T17:48:45-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/spring-motor-for-sewing-machine.png?v=1777224140</image:loc>
      <image:title>Spring Motor for Sewing-machine: How It Works, Parts, Diagram and Calculator</image:title>
      <image:caption>Spring Motor for Sewing-machine diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/stamp-form</loc>
    <lastmod>2026-10-04T17:49:00-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/stamp-form.png?v=1777224151</image:loc>
      <image:title>Stamp (form) Mechanism Explained: How a Gravity Stamp Mill Crushes Ore, Parts and Diagram</image:title>
      <image:caption>Stamp (form) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/stamp-mill-cam-motion</loc>
    <lastmod>2026-10-04T17:49:01-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/stamp-mill-cam-motion.png?v=1777224163</image:loc>
      <image:title>Stamp Mill Cam Motion: How It Works, Diagram, Parts, and Blow Energy Calculator</image:title>
      <image:caption>Stamp Mill Cam Motion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/steam-cotton-press</loc>
    <lastmod>2026-10-04T17:49:08-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/steam-cotton-press.png?v=1777224174</image:loc>
      <image:title>Steam Cotton Press Mechanism: How It Works, Hydraulic Intensifier Diagram, Parts and Uses</image:title>
      <image:caption>Steam Cotton Press diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/steam-vulcanizers</loc>
    <lastmod>2026-10-04T17:49:28-07:00</lastmod>
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      <image:title>Steam Vulcanizers Mechanism Explained: How Rubber Curing Works, Parts, Diagram &amp; Uses</image:title>
      <image:caption>Steam Vulcanizers diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/stirring-machine-for-grain-mash</loc>
    <lastmod>2026-10-05T07:48:30-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/stirring-machine-for-grain-mash.png?v=1777224198</image:loc>
      <image:title>Grain-Mash Stirrer: Animation and Tip-Speed Calculator | FIRGELLI</image:title>
      <image:caption>Stirring Machine for Grain Mash diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/suspended-swing-treadle</loc>
    <lastmod>2026-10-06T16:23:57-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/suspended-swing-treadle.png?v=1777224213</image:loc>
      <image:title>Suspended Swing Treadle: Hiscox Linkage and Joint-Arc Calculator</image:title>
      <image:caption>Suspended Swing Treadle diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/swing-bracket-crane</loc>
    <lastmod>2026-10-05T07:49:16-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/swing-bracket-crane.png?v=1777224224</image:loc>
      <image:title>Swing Bracket Crane Mechanism: How It Works, Parts, Formula, and Diagram</image:title>
      <image:caption>Swing Bracket Crane diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/take-up-and-let-off-motion-for-looms</loc>
    <lastmod>2026-10-05T07:49:40-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/take-up-and-let-off-motion-for-looms.png?v=1777224236</image:loc>
      <image:title>Loom Take-up and Let-off: Ideal Length-balance Calculator</image:title>
      <image:caption>Take-up and Let-off Motion for Looms diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/telescopic-hydraulic-elevator</loc>
    <lastmod>2026-10-05T07:49:59-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/telescopic-hydraulic-elevator.png?v=1777224257</image:loc>
      <image:title>Telescopic Hydraulic Cylinder: Ideal Pressure Comparison</image:title>
      <image:caption>Telescopic Hydraulic Elevator diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/tinplate-lacquering-machine</loc>
    <lastmod>2026-10-05T07:50:49-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/tinplate-lacquering-machine.png?v=1777224273</image:loc>
      <image:title>Tinplate Lacquering Machine: Roller Coating and Dry-mass Calculator</image:title>
      <image:caption>Tinplate Lacquering Machine diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/tire-shrinker</loc>
    <lastmod>2026-10-05T07:50:54-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/tire-shrinker.png?v=1777224286</image:loc>
      <image:title>Tire Shrinker: Historical Upsetter and Indexing Illustration</image:title>
      <image:caption>Tire Shrinker diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/toggle-mechanism</loc>
    <lastmod>2026-10-05T07:51:02-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/toggle-mechanism.png?v=1777224297</image:loc>
      <image:title>Toggle Mechanism: Ideal Two-link Forces and Reactions</image:title>
      <image:caption>Toggle Mechanism diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/traveller-hoist</loc>
    <lastmod>2026-10-05T07:51:38-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/traveller-hoist.png?v=1777224311</image:loc>
      <image:title>Traveller Hoist: Ideal Equal Wheel-load Comparison</image:title>
      <image:caption>Traveller Hoist diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/travelling-derrick</loc>
    <lastmod>2026-10-05T07:51:42-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/travelling-derrick.png?v=1777224334</image:loc>
      <image:title>Travelling Derrick: Illustrative Moment Balance</image:title>
      <image:caption>Travelling Derrick diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/tube-rolling-machine</loc>
    <lastmod>2026-10-05T07:52:14-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/tube-rolling-machine.png?v=1777224345</image:loc>
      <image:title>Tube Rolling: Three-roll Arrangement and Ideal First-yield Calculator</image:title>
      <image:caption>Tube-rolling Machine diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/universal-chuck</loc>
    <lastmod>2026-10-05T07:53:07-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/universal-chuck.png?v=1777224358</image:loc>
      <image:title>Scroll Chuck: Ideal Signed Jaw-travel Calculator</image:title>
      <image:caption>Universal Chuck diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/v-grooved-face-clutch</loc>
    <lastmod>2026-10-05T07:53:13-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/v-grooved-face-clutch.png?v=1777224369</image:loc>
      <image:title>V-grooved Face Clutch: Entered-load Torque Comparison</image:title>
      <image:caption>V-grooved Face Clutch diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/variable-speed-device</loc>
    <lastmod>2026-10-05T07:53:57-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/variable-speed-device.png?v=1777224384</image:loc>
      <image:title>Variable-speed Belt Drive: Ideal Ratio, Speed and Torque</image:title>
      <image:caption>Variable Speed Device diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/variable-traverse-silk-machine-modified</loc>
    <lastmod>2026-10-05T07:54:05-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/variable-traverse-silk-machine-modified.png?v=1777224395</image:loc>
      <image:title>Silk-machine Traverse: Linear Stroke Schedule Calculator</image:title>
      <image:caption>Variable Traverse Silk Machine (modified) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/variable-traverse-silk-machine-guide-bar</loc>
    <lastmod>2026-10-05T07:54:07-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/variable-traverse-silk-machine-guide-bar.png?v=1777224407</image:loc>
      <image:title>Silk-machine Traverse Ratios: Nearest-integer Comparison</image:title>
      <image:caption>Variable Traverse Silk Machine Guide-bar diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/vernier-caliper</loc>
    <lastmod>2026-10-05T07:54:15-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/vernier-caliper.png?v=1777224419</image:loc>
      <image:title>Vernier Caliper: Ideal Scale Reading and Least Count</image:title>
      <image:caption>Vernier Caliper diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/vertical-shaft-step</loc>
    <lastmod>2026-10-05T07:54:24-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/vertical-shaft-step.png?v=1777224431</image:loc>
      <image:title>Vertical Shaft Step: Static Thrust and Mean-pressure Calculator</image:title>
      <image:caption>Vertical Shaft Step diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/wabble-saw</loc>
    <lastmod>2026-10-05T07:54:45-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/wabble-saw.png?v=1777224451</image:loc>
      <image:title>Wabble Saw: Ideal Tilted-disc Envelope and Rim Speed</image:title>
      <image:caption>Wabble Saw diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/warp-dressing-machine</loc>
    <lastmod>2026-10-05T07:54:52-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/warp-dressing-machine.png?v=1777224464</image:loc>
      <image:title>Warp-dressing Machine: Empty and Full Beam Speed Comparison</image:title>
      <image:caption>Warp-dressing Machine diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/wire-covering-machine</loc>
    <lastmod>2026-10-05T07:56:17-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/wire-covering-machine.png?v=1777224490</image:loc>
      <image:title>Wire-Covering Machine: Serving Animation, Lay and Coverage Calculator</image:title>
      <image:caption>Wire-covering Machine diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/wire-drawing-machine</loc>
    <lastmod>2026-10-05T07:56:18-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/wire-drawing-machine.png?v=1777224502</image:loc>
      <image:title>Wire-Drawing Machine: Animation and Equal-Pass Reduction Calculator</image:title>
      <image:caption>Wire-drawing Machine diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/wood-compression-carving-machine</loc>
    <lastmod>2026-10-05T07:56:22-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/wood-compression-carving-machine.png?v=1777224517</image:loc>
      <image:title>Wood Compression Carving: Ideal Press-force Calculator</image:title>
      <image:caption>Wood Compression Carving Machine diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/wood-bending-clamp-and-formers</loc>
    <lastmod>2026-10-05T07:56:23-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/wood-bending-clamp-and-formers.png?v=1777224527</image:loc>
      <image:title>Wood-bending Clamp and Formers: Ideal Bend-strain Calculator</image:title>
      <image:caption>Wood-bending Clamp and Formers diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/yale-duplex-hoist</loc>
    <lastmod>2026-10-05T07:56:45-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/yale-duplex-hoist.png?v=1777224540</image:loc>
      <image:title>Yale Duplex Hoist Mechanism Explained: Weston Brake, Duplex Pawls, Mechanical Advantage</image:title>
      <image:caption>Yale Duplex Hoist diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/yale-weston-differential-gear-hoist</loc>
    <lastmod>2026-10-05T07:56:47-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/yale-weston-differential-gear-hoist.png?v=1777224553</image:loc>
      <image:title>Yale-weston Differential Gear Hoist Mechanism Explained: How It Works, Diagram, Formula, and Uses</image:title>
      <image:caption>Yale-weston Differential Gear Hoist diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/pressure-relief-valve</loc>
    <lastmod>2026-10-04T13:46:01-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/pressure-relief-valve.png?v=1777224565</image:loc>
      <image:title>Pressure-Relief Valve: Ideal Seat-Force Ledger</image:title>
      <image:caption>Pressure Relief Valve diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/rotary-valve</loc>
    <lastmod>2026-10-04T17:42:53-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/rotary-valve.png?v=1777224577</image:loc>
      <image:title>Rotary Valve Mechanism: How It Works, Parts, Diagram, Formula, and Industrial Uses Explained</image:title>
      <image:caption>Rotary Valve diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/differential-pulley</loc>
    <lastmod>2026-10-04T21:26:20-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/differential-pulley.png?v=1777224589</image:loc>
      <image:title>Differential Pulley Mechanism: How It Works, Diagram, Formula and Uses Explained</image:title>
      <image:caption>Differential Pulley diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/air-winch</loc>
    <lastmod>2026-10-04T23:58:59-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/air-winch.png?v=1777224602</image:loc>
      <image:title>Air Winch: Pneumatic Drive, Gear Reduction and Drum Motion</image:title>
      <image:caption>Air Winch diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/almond-s-flexible-metallic-tube</loc>
    <lastmod>2026-10-04T21:03:17-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/almond-s-flexible-metallic-tube.png?v=1777224613</image:loc>
      <image:title>Almond’s Flexible Metallic Tube: Two-Wire Construction and Interactive Diagram</image:title>
      <image:caption>Almond&apos;s Flexible Metallic Tube diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/anti-twister-mechanism</loc>
    <lastmod>2026-10-05T01:21:33-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/anti-twister-mechanism.png?v=1777224623</image:loc>
      <image:title>Anti-twister Mechanism Explained: How It Works, Diagram, Parts, Formula, and Uses</image:title>
      <image:caption>Anti-twister Mechanism diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/artificial-leg-and-foot</loc>
    <lastmod>2026-10-05T08:46:18-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/artificial-leg-and-foot.png?v=1777224635</image:loc>
      <image:title>Artificial Leg and Foot Mechanism Explained: Socket, Pylon, Knee and Energy-Storing Foot</image:title>
      <image:caption>Artificial Leg and Foot diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/balance-wheel</loc>
    <lastmod>2026-10-05T09:49:34-07:00</lastmod>
    <changefreq>weekly</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/balance-wheel.png?v=1777224646</image:loc>
      <image:title>Balance Wheel Mechanism: How It Works, Hairspring Oscillator Diagram, Parts and Formula</image:title>
      <image:caption>Balance Wheel diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/ball-differential</loc>
    <lastmod>2026-10-05T10:09:32-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/ball-differential.png?v=1777224663</image:loc>
      <image:title>Ball Differential Mechanism: How It Works, Parts, Diagram and Slip Torque Formula Explained</image:title>
      <image:caption>Ball Differential diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/ball-valve</loc>
    <lastmod>2026-10-05T10:15:01-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/ball-valve.png?v=1777224675</image:loc>
      <image:title>Ball Valve: Quarter-Turn Animation, Pressure Thrust and Flow Equations</image:title>
      <image:caption>Ball Valve diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/ballast</loc>
    <lastmod>2026-10-05T10:19:09-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/ballast.png?v=1777224686</image:loc>
      <image:title>Ship Ballast: Initial Stability, Metacentric Height and Righting Arm</image:title>
      <image:caption>Ballast diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/barrel-horology</loc>
    <lastmod>2026-09-28T21:59:07-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/barrel-horology.png?v=1777224698</image:loc>
      <image:title>Barrel (horology) Explained: Mechanism, Parts, Diagram, and Mainspring Power Reserve</image:title>
      <image:caption>Barrel (horology) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/beam-coupling</loc>
    <lastmod>2026-10-02T08:20:38-07:00</lastmod>
    <changefreq>weekly</changefreq>
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      <image:title>Beam Coupling Mechanism Explained: How It Works, Parts, Diagram, Formula and Uses</image:title>
      <image:caption>Beam Coupling diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/beater-bar-typewriter</loc>
    <lastmod>2026-09-28T22:34:03-07:00</lastmod>
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    <image:image>
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      <image:title>Beater Bar (typewriter) Mechanism Explained: Parts, Linkage, Diagram, and How It Works</image:title>
      <image:caption>Beater Bar (typewriter) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/bell-clapper-movement</loc>
    <lastmod>2026-09-28T22:48:24-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/bell-clapper-movement.png?v=1777224731</image:loc>
      <image:title>Bell Clapper Movement: How It Works, Parts, Diagram, and Strike Timing Formula Explained</image:title>
      <image:caption>Bell Clapper Movement diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/bell-hammer</loc>
    <lastmod>2026-09-28T23:17:58-07:00</lastmod>
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      <image:title>Bell Hammer Mechanism: How It Works, Diagram, Parts, Strike Formula and Real Uses Explained</image:title>
      <image:caption>Bell Hammer diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/bohnenberger-s-machine</loc>
    <lastmod>2026-10-04T21:52:33-07:00</lastmod>
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      <image:title>Bohnenberger&apos;s Machine: How the 3-Ring Gimbal Gyroscope Demonstrates Precession</image:title>
      <image:caption>Bohnenberger&apos;s Machine diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/bump-stop</loc>
    <lastmod>2026-10-04T22:07:49-07:00</lastmod>
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      <image:title>Bump Stop Mechanism Explained: How It Works, Diagram, Parts, Formula and Uses</image:title>
      <image:caption>Bump Stop diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/butterfly-valve</loc>
    <lastmod>2026-10-04T22:08:53-07:00</lastmod>
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      <image:title>Butterfly Valve: Disc Animation and Position-Comparison Calculator</image:title>
      <image:caption>Butterfly Valve diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/cam-mechanism</loc>
    <lastmod>2026-10-04T22:19:47-07:00</lastmod>
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      <image:title>Cam (mechanism) Explained: How It Works, Diagram, Parts, Profile Formula and Uses</image:title>
      <image:caption>Cam (mechanism) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/cam-timer</loc>
    <lastmod>2026-10-04T20:06:53-07:00</lastmod>
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      <image:title>Cam Timer Mechanism: How Rotary Appliance Timers Sequence Wash, Drain, and Heat Cycles</image:title>
      <image:caption>Cam Timer diagram</image:caption>
    </image:image>
  </url>
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    <loc>https://www.firgelliauto.com/blogs/mechanisms/canfield-joint</loc>
    <lastmod>2026-10-04T22:21:16-07:00</lastmod>
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      <image:title>Canfield Joint: Three-Leg Platform Geometry and Interactive Calculator</image:title>
      <image:caption>Canfield Joint diagram</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-10-04T20:48:13-07:00</lastmod>
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      <image:title>Capstan (form) Mechanism Explained: How It Works, Eytelwein Equation, Diagram and Uses</image:title>
      <image:caption>Capstan (form) diagram</image:caption>
    </image:image>
  </url>
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    <loc>https://www.firgelliauto.com/blogs/mechanisms/centrifugal-pump</loc>
    <lastmod>2026-10-04T21:25:25-07:00</lastmod>
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      <image:title>Centrifugal Pump Mechanism Explained: How It Works, Parts, Diagram, Pump Curve and NPSH</image:title>
      <image:caption>Centrifugal Pump diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/chassepot-gun</loc>
    <lastmod>2026-10-05T07:56:56-07:00</lastmod>
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      <image:title>Chassepot Rifle: Historical Mechanism Illustration</image:title>
      <image:caption>Chassepot Gun diagram</image:caption>
    </image:image>
  </url>
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    <lastmod>2026-10-04T21:43:50-07:00</lastmod>
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      <image:title>Check Valve Mechanism Explained: How It Works, Parts, Cracking Pressure Formula and Uses</image:title>
      <image:caption>Check Valve diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/color-wheel-optics</loc>
    <lastmod>2026-10-04T21:38:30-07:00</lastmod>
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      <image:title>Color Wheel (optics) Explained: How DLP Projector Color Wheels Work, Parts, Timing &amp; Uses</image:title>
      <image:caption>Color Wheel (optics) diagram</image:caption>
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  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/colt-revolving-fire-arm-cylinder</loc>
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      <image:title>Colt Revolving Cylinder: Historical Mechanism Illustration</image:title>
      <image:caption>Colt Revolving Fire-arm Cylinder diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/combination-lock</loc>
    <lastmod>2026-10-04T21:40:43-07:00</lastmod>
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      <image:title>Combination Lock Mechanism: How It Works, Parts, Formula and Diagram Explained</image:title>
      <image:caption>Combination Lock diagram</image:caption>
    </image:image>
  </url>
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    <loc>https://www.firgelliauto.com/blogs/mechanisms/constant-velocity-joint</loc>
    <lastmod>2026-10-04T20:02:39-07:00</lastmod>
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      <image:title>Constant-velocity Joint Mechanism: How It Works, Parts, Diagram and Uses Explained</image:title>
      <image:caption>Constant-velocity Joint diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/corexy</loc>
    <lastmod>2026-10-04T20:12:50-07:00</lastmod>
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      <image:title>Corexy Mechanism Explained: How CoreXY Kinematics, Belts, and Stationary Motors Work</image:title>
      <image:caption>Corexy diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/crab-winch</loc>
    <lastmod>2026-10-04T20:21:12-07:00</lastmod>
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      <image:title>Crab Winch Mechanism Explained: How a Double-Reduction Hand Winch Works, Parts and Uses</image:title>
      <image:caption>Crab Winch diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/crayford-focuser</loc>
    <lastmod>2026-10-04T20:31:45-07:00</lastmod>
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      <image:title>Crayford Focuser Mechanism: How Friction-Drive Telescope Focusers Work, Parts, and Load Formula</image:title>
      <image:caption>Crayford Focuser diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/dashpot</loc>
    <lastmod>2026-10-04T21:05:58-07:00</lastmod>
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      <image:title>Dashpot Mechanism Explained: How It Works, Parts, Damping Formula, and Uses</image:title>
      <image:caption>Dashpot diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/detent</loc>
    <lastmod>2026-10-04T21:14:47-07:00</lastmod>
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      <image:title>Detent Mechanism Explained: How Spring-Loaded Ball Detents Work, Parts, Formula and Uses</image:title>
      <image:caption>Detent diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/developable-mechanism</loc>
    <lastmod>2026-10-04T21:15:51-07:00</lastmod>
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      <image:title>Developable Mechanism: Cylindrical Four-Link Panels, Motion and Torque Calculator</image:title>
      <image:caption>Developable Mechanism diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/diaphragm-coupling</loc>
    <lastmod>2026-10-04T21:19:58-07:00</lastmod>
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      <image:title>Diaphragm Coupling Mechanism: How It Works, Parts, Diagram, and Formula Explained</image:title>
      <image:caption>Diaphragm Coupling diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/diaphragm-valve</loc>
    <lastmod>2026-10-04T21:22:13-07:00</lastmod>
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      <image:title>Diaphragm Valve Mechanism Explained: How It Works, Parts, Cv Sizing Formula and Animated Diagram</image:title>
      <image:caption>Diaphragm Valve diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/disappearing-gun-moncrief-model</loc>
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      <image:title>Moncrieff Disappearing Carriage: Historical Mechanism Illustration</image:title>
      <image:caption>Disappearing Gun Moncrief Model diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/disc-coupling</loc>
    <lastmod>2026-10-04T21:35:59-07:00</lastmod>
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      <image:title>Disc Coupling Mechanism Explained: How It Works, Diagram, Parts, Formula &amp; Uses</image:title>
      <image:caption>Disc Coupling diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/disc-tumbler-lock</loc>
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      <image:title>Disc Tumbler Lock Mechanism Explained: How It Works, Parts, Sidebar Diagram and Key Differs</image:title>
      <image:caption>Disc Tumbler Lock diagram</image:caption>
    </image:image>
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      <image:title>Dog-power Machine: Historical Inclined Treadwheel and Churn Drive</image:title>
      <image:caption>Dog-power Machine diagram</image:caption>
    </image:image>
  </url>
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      <image:title>Door Push Check: Spring and Pneumatic Damper, Travel and Volume Calculator</image:title>
      <image:caption>Door Push Check diagram</image:caption>
    </image:image>
  </url>
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    <lastmod>2026-10-04T23:01:16-07:00</lastmod>
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      <image:title>Electric Servo: Screw-Axis Animation and Encoder Resolution Calculator</image:title>
      <image:caption>Electric Servo diagram</image:caption>
    </image:image>
  </url>
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    <lastmod>2026-10-05T16:45:12-07:00</lastmod>
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      <image:title>Flexure Bearing: Motion and Ideal Blade-Stress Comparison | FIRGELLI</image:title>
      <image:caption>Flexure Bearing diagram</image:caption>
    </image:image>
  </url>
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      <image:caption>Float Switch diagram</image:caption>
    </image:image>
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      <image:caption>Flywheel diagram</image:caption>
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      <image:title>Folding Ladder: Hinge-Lock Illustration and Load Comparisons | FIRGELLI</image:title>
      <image:caption>Folding Ladder diagram</image:caption>
    </image:image>
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      <image:caption>Foliot diagram</image:caption>
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      <image:title>Force Pump: Piston Motion, Ideal Pressure and Flow Calculator | FIRGELLI</image:title>
      <image:caption>Force Pump diagram</image:caption>
    </image:image>
  </url>
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      <image:caption>Four-way Cock diagram</image:caption>
    </image:image>
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      <image:title>Gate Valve: Travel and Projected Opening Calculator | FIRGELLI</image:title>
      <image:caption>Gate Valve diagram</image:caption>
    </image:image>
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      <image:title>Gear Coupling: Crowned Hubs and Angle Comparison | FIRGELLI</image:title>
      <image:caption>Gear Coupling diagram</image:caption>
    </image:image>
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      <image:title>Gimbal Motion: Angle-Cancellation Calculator | FIRGELLI</image:title>
      <image:caption>Gimbal diagram</image:caption>
    </image:image>
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  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/grid-coupling</loc>
    <lastmod>2026-10-06T00:07:51-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/grid-coupling-mechanism.png?v=1791270470</image:loc>
      <image:title>Grid Coupling: Spring-Grid Animation and Torque Calculator</image:title>
      <image:caption>Grid Coupling — schematic of the mechanism.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/gun-lock</loc>
    <lastmod>2026-10-06T10:22:39-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/gun-lock-historical-reference.png?v=1791307358</image:loc>
      <image:title>Gun Lock: Historical Meaning and Hiscox Illustration</image:title>
      <image:caption>Historical gun-lock illustration from Hiscox, entry 1638</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/gyroscope</loc>
    <lastmod>2026-10-03T17:52:31-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/gyroscope.png?v=1777226468</image:loc>
      <image:title>Gyroscope Mechanism Explained: How It Works, Parts, Precession Formula and Real-World Uses</image:title>
      <image:caption>Gyroscope diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/hairspring</loc>
    <lastmod>2026-10-05T05:01:20-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/hairspring.png?v=1777226481</image:loc>
      <image:title>Hairspring: Balance Frequency and Energy Calculator | FIRGELLI</image:title>
      <image:caption>Hairspring diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/hart-s-a-frame</loc>
    <lastmod>2026-10-06T04:14:15-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/hart-s-a-frame-mechanism.png?v=1791285254</image:loc>
      <image:title>Hart&apos;s A-frame: Straight-Line Linkage and Interactive Animation</image:title>
      <image:caption>Hart&apos;s A-frame — schematic of the mechanism.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/hart-s-w-frame</loc>
    <lastmod>2026-10-06T04:26:08-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/hart-s-w-frame-mechanism.png?v=1791285967</image:loc>
      <image:title>Hart&apos;s W-frame: Crossed-Link Animation and Stroke Calculator</image:title>
      <image:caption>Hart&apos;s W-frame — schematic of the mechanism.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/hydraulic-servo</loc>
    <lastmod>2026-10-05T07:52:34-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/hydraulic-servo.png?v=1777226542</image:loc>
      <image:title>Hydraulic Servo: Ideal Bore and Tolerance Calculator | FIRGELLI</image:title>
      <image:caption>Hydraulic Servo diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/hydraulic-shock-absorber</loc>
    <lastmod>2026-10-05T07:54:51-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/hydraulic-shock-absorber.png?v=1777226552</image:loc>
      <image:title>Hydraulic Shock Absorber: Energy and Average Force Calculator | FIRGELLI</image:title>
      <image:caption>Hydraulic Shock Absorber diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/idler-wheel</loc>
    <lastmod>2026-10-05T08:22:22-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/idler-wheel.png?v=1777226564</image:loc>
      <image:title>Idler Wheel: Equal-Tension Resultant Load Calculator | FIRGELLI</image:title>
      <image:caption>Idler-wheel diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/indexing-motion</loc>
    <lastmod>2026-10-05T08:36:38-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/indexing-motion.png?v=1777226576</image:loc>
      <image:title>Indexing Motion: External Geneva Phase Calculator | FIRGELLI</image:title>
      <image:caption>Indexing (motion) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/inertia-wheel-pendulum</loc>
    <lastmod>2026-10-05T08:39:44-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/inertia-wheel-pendulum.png?v=1777226588</image:loc>
      <image:title>Inertia Wheel Pendulum: Reaction Torque Calculator | FIRGELLI</image:title>
      <image:caption>Inertia Wheel Pendulum diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/iron-frame-turn-table</loc>
    <lastmod>2026-10-05T09:11:04-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/iron-frame-turn-table.png?v=1777226601</image:loc>
      <image:title>Iron Frame Turn-table: Ideal Support-Reaction Calculator | FIRGELLI</image:title>
      <image:caption>Iron Frame Turn-table diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/jaw-coupling</loc>
    <lastmod>2026-10-06T18:48:59-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/jaw-coupling.png?v=1777226615</image:loc>
      <image:title>Jaw Coupling: Aligned Illustration and Torque Comparison Calculator | FIRGELLI</image:title>
      <image:caption>Jaw Coupling diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/karrusel</loc>
    <lastmod>2026-10-05T09:44:52-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/karrusel.png?v=1777226626</image:loc>
      <image:title>Karrusel Watch Mechanism and Separate Static-Load Calculator | FIRGELLI</image:title>
      <image:caption>Karrusel diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/kinematic-chain</loc>
    <lastmod>2026-10-06T19:03:46-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/kinematic-chain.png?v=1777226639</image:loc>
      <image:title>Kinematic Chain: Four-Bar Animation and Mobility Count | FIRGELLI</image:title>
      <image:caption>Kinematic Chain diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/lebel-rifle</loc>
    <lastmod>2026-10-04T20:18:40-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/lebel-rifle.png?v=1777226652</image:loc>
      <image:title>Lebel Mle 1886 M.93: Museum Component Map</image:title>
      <image:caption>Lebel Rifle diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/lee-metford-magazine-rifle</loc>
    <lastmod>2026-10-04T20:23:01-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/lee-metford-magazine-rifle.png?v=1777226663</image:loc>
      <image:title>Lee-Metford Magazine: Historic Component Cross-Section</image:title>
      <image:caption>Lee-metford Magazine Rifle diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/lever-tumbler-lock</loc>
    <lastmod>2026-10-04T23:34:33-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/lever-tumbler-lock.png?v=1777226675</image:loc>
      <image:title>Lever Tumbler Lock: Gate Animation and Nominal Combination Calculator</image:title>
      <image:caption>Lever Tumbler Lock diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/limit-switch</loc>
    <lastmod>2026-10-04T23:46:58-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/limit-switch.png?v=1777226685</image:loc>
      <image:title>Limit Switch: Plunger Animation and Datasheet Current Comparison</image:title>
      <image:caption>Limit Switch diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/lobe-pump</loc>
    <lastmod>2026-10-04T23:56:04-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/lobe-pump.png?v=1777226696</image:loc>
      <image:title>Lobe Pump Mechanism Explained: How It Works, Parts, Diagram, and Sanitary Pumping Uses</image:title>
      <image:caption>Lobe Pump diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/magnetorheological-damper</loc>
    <lastmod>2026-10-05T00:08:22-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/magnetorheological-damper.png?v=1777226706</image:loc>
      <image:title>Magnetorheological Damper: Annular-Flow Topology and Local Bingham Estimate</image:title>
      <image:caption>Magnetorheological Damper diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/mainspring</loc>
    <lastmod>2026-10-05T00:12:33-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/mainspring.png?v=1777226718</image:loc>
      <image:title>Mainspring: Ideal Elastic-Strip Bending Estimate</image:title>
      <image:caption>Mainspring diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/martini-henry-rifle</loc>
    <lastmod>2026-09-28T13:55:03-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/martini-henry-rifle.png?v=1777226729</image:loc>
      <image:title>Martini-henry Rifle: Mechanism, How It Works, Diagrams, Detailed Explanation</image:title>
      <image:caption>Martini-henry Rifle diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/mauser-rifle</loc>
    <lastmod>2026-10-05T00:23:52-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/mauser-rifle.png?v=1777226742</image:loc>
      <image:title>Mauser 98 Bolt Action: Historical Sequence and Model Boundaries</image:title>
      <image:caption>Mauser Rifle diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/mechanical-advantage</loc>
    <lastmod>2026-10-05T00:25:36-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/mechanical-advantage.png?v=1777226752</image:loc>
      <image:title>Mechanical Advantage: Force–Distance Tradeoff</image:title>
      <image:caption>Mechanical Advantage diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/mechanical-amplifier</loc>
    <lastmod>2026-10-05T00:25:40-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/mechanical-amplifier.png?v=1777226763</image:loc>
      <image:title>Capstan Mechanical Amplifier: Ideal Tension Ratio</image:title>
      <image:caption>Mechanical Amplifier diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/mechanical-filter</loc>
    <lastmod>2026-10-04T23:23:17-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/mechanical-filter.png?v=1777226775</image:loc>
      <image:title>Mechanical Filter: Resonator Animation and Frequency-Shift Calculator</image:title>
      <image:caption>Mechanical Filter diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/mechanical-fuse</loc>
    <lastmod>2026-10-05T00:27:27-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/mechanical-fuse.png?v=1777226787</image:loc>
      <image:title>Shear-Pin Coupling: Normalized Capacity Comparison</image:title>
      <image:caption>Mechanical Fuse diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/mechanical-singularity</loc>
    <lastmod>2026-10-05T00:29:39-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/mechanical-singularity.png?v=1777226798</image:loc>
      <image:title>Planar Two-Link Jacobian Singularity</image:title>
      <image:caption>Mechanical Singularity diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/mechanical-timer</loc>
    <lastmod>2026-10-05T00:31:28-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/mechanical-timer.png?v=1777226810</image:loc>
      <image:title>Mechanical Timer: Escapement and Gear-Ratio Calculator</image:title>
      <image:caption>Mechanical Timer diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/mechanical-translation</loc>
    <lastmod>2026-10-05T00:31:32-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/mechanical-translation.png?v=1777226821</image:loc>
      <image:title>Lead-Screw Mechanical Translation Calculator</image:title>
      <image:caption>Mechanical Translation diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/mechanism-engineering</loc>
    <lastmod>2026-10-05T00:32:31-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/mechanism-engineering.png?v=1777226834</image:loc>
      <image:title>Planar Mechanism Mobility: Constraint-Count Worksheet</image:title>
      <image:caption>Mechanism (engineering) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/microswitch</loc>
    <lastmod>2026-10-05T00:44:08-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/microswitch.png?v=1777226852</image:loc>
      <image:title>Microswitch: Operating Position and Movement Differential</image:title>
      <image:caption>Microswitch diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/mirror-stand</loc>
    <lastmod>2026-10-05T00:47:00-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/mirror-stand.png?v=1777226863</image:loc>
      <image:title>Mirror Stand: Pivot and Gravity Moment</image:title>
      <image:caption>Mirror Stand diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/needle-valve</loc>
    <lastmod>2026-10-05T09:01:37-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/needle-valve.png?v=1777226874</image:loc>
      <image:title>Needle Valve: Tapered Stem Geometry and Liquid Cv Estimate</image:title>
      <image:caption>Needle Valve diagram</image:caption>
    </image:image>
  </url>
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    <loc>https://www.firgelliauto.com/blogs/mechanisms/open-source-robotics</loc>
    <lastmod>2026-10-05T09:30:37-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/open-source-robotics.png?v=1777226883</image:loc>
      <image:title>Open-Source Robotics: ROS 2 Control-Loop Timing Calculator</image:title>
      <image:caption>Open-source Robotics diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/overrunning-clutch</loc>
    <lastmod>2026-10-05T09:47:11-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/overrunning-clutch.png?v=1777226893</image:loc>
      <image:title>Roller Overrunning Clutch: Declared Annular Layout</image:title>
      <image:caption>Overrunning Clutch diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/padlock</loc>
    <lastmod>2026-10-05T09:52:12-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/padlock.png?v=1777226905</image:loc>
      <image:title>Padlock: Declared U-Shackle Geometry</image:title>
      <image:caption>Padlock diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/pawl</loc>
    <lastmod>2026-10-05T10:08:49-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/pawl.png?v=1777226916</image:loc>
      <image:title>Pawl and Ratchet: Tooth Pitch and Engagement Timing</image:title>
      <image:caption>Pawl diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/peristaltic-pump</loc>
    <lastmod>2026-10-04T06:59:36-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/peristaltic-pump.png?v=1777226927</image:loc>
      <image:title>Peristaltic Pump: Ideal Raceway Displacement Geometry</image:title>
      <image:caption>Peristaltic Pump diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/piano-key-and-action</loc>
    <lastmod>2026-10-04T07:25:05-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/piano-key-and-action.png?v=1777226940</image:loc>
      <image:title>Grand Piano Action: Declared Travel and Let-Off</image:title>
      <image:caption>Piano Key and Action diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/pin-tumbler-lock</loc>
    <lastmod>2026-10-04T07:39:33-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/pin-tumbler-lock.png?v=1777226952</image:loc>
      <image:title>Pin-Tumbler Lock: Shear-Line Alignment and Abstract Code Counts</image:title>
      <image:caption>Pin Tumbler Lock diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/pinch-valve</loc>
    <lastmod>2026-10-04T07:59:26-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/pinch-valve.png?v=1777226962</image:loc>
      <image:title>Pneumatic Pinch Valve: Nameplate Differential Pressure Check</image:title>
      <image:caption>Pinch Valve diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/pinion</loc>
    <lastmod>2026-10-04T08:02:37-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/pinion.png?v=1777226973</image:loc>
      <image:title>Pinion and Rack: Pitch-Line Travel and Module</image:title>
      <image:caption>Pinion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/plug-valve</loc>
    <lastmod>2026-10-04T09:32:01-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/plug-valve.png?v=1777226983</image:loc>
      <image:title>Plug Valve: Quarter-Turn Orientation and Declared Liquid Cv</image:title>
      <image:caption>Plug Valve diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/plunger-pump</loc>
    <lastmod>2026-10-04T09:48:38-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/plunger-pump.png?v=1777226995</image:loc>
      <image:title>Plunger Pump: Single-Acting Displacement and Declared Flow</image:title>
      <image:caption>Plunger Pump diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/pneumatic-amplifier</loc>
    <lastmod>2026-10-04T09:54:02-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/pneumatic-amplifier.png?v=1777227005</image:loc>
      <image:title>Pneumatic Relay: Pilot-Diaphragm Area and Ideal Force</image:title>
      <image:caption>Pneumatic Amplifier diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/poppet-valve</loc>
    <lastmod>2026-10-04T11:09:15-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/poppet-valve.png?v=1777227016</image:loc>
      <image:title>Poppet Valve: Prescribed Lift and Curtain-Area Geometry</image:title>
      <image:caption>Poppet Valve diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/pressure-switch</loc>
    <lastmod>2026-10-04T13:53:35-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/pressure-switch.png?v=1777227027</image:loc>
      <image:title>Pressure Switch: Declared Threshold Ledger</image:title>
      <image:caption>Pressure Switch diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/pulley</loc>
    <lastmod>2026-10-04T14:45:21-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/pulley.png?v=1777227039</image:loc>
      <image:title>Block and Tackle: Supporting-Parts and Ideal Work Ledger</image:title>
      <image:caption>Pulley diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/pushrod</loc>
    <lastmod>2026-10-04T15:26:53-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/pushrod.png?v=1777227053</image:loc>
      <image:title>Pushrod: Ideal Hollow-Column Buckling Screen</image:title>
      <image:caption>Pushrod diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/ratchet-device</loc>
    <lastmod>2026-10-04T20:00:51-07:00</lastmod>
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    <image:image>
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      <image:title>Ratchet (device) Mechanism: How It Works, Parts, Tooth Geometry, and Real-World Uses Explained</image:title>
      <image:caption>Ratchet (device) diagram</image:caption>
    </image:image>
  </url>
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    <loc>https://www.firgelliauto.com/blogs/mechanisms/remington-magazine-gun</loc>
    <lastmod>2026-10-05T04:09:26-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/remington-magazine-gun.png?v=1777227079</image:loc>
      <image:title>Remington-Keene Magazine Rifle: Historical Animation and Display Timing</image:title>
      <image:caption>Remington Magazine Gun diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/remington-rifle</loc>
    <lastmod>2026-10-05T04:29:04-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/remington-rifle.png?v=1777227090</image:loc>
      <image:title>Remington Rolling Block: Historical Illustration and Display Controls</image:title>
      <image:caption>Remington Rifle diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/rigid-coupling</loc>
    <lastmod>2026-10-04T17:41:57-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/rigid-coupling.png?v=1777227104</image:loc>
      <image:title>Rigid Coupling Mechanism Explained: How It Works, Parts, Diagram, Formula &amp; Calculator</image:title>
      <image:caption>Rigid Coupling diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/roller-chain</loc>
    <lastmod>2026-10-04T17:42:12-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/roller-chain.png?v=1777227116</image:loc>
      <image:title>Roller Chain Mechanism Explained: How It Works, Parts, Pitch, and Sprocket Speed</image:title>
      <image:caption>Roller Chain diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/roneo-machine</loc>
    <lastmod>2026-10-04T17:42:26-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/roneo-machine.png?v=1777227130</image:loc>
      <image:title>Roneo Machine Mechanism: How a Rotary Stencil Duplicator Works, Parts, Diagram and Output Formula</image:title>
      <image:caption>Roneo Machine diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/rotary-actuator</loc>
    <lastmod>2026-09-05T12:17:51-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/rotary-actuator.png?v=1777227142</image:loc>
      <image:title>Rotary Actuator Mechanism Explained: How It Works, Parts, Torque Formula and Industrial Uses</image:title>
      <image:caption>Rotary Actuator diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/schmidt-coupling</loc>
    <lastmod>2026-10-04T18:18:35-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/schmidt-coupling.png?v=1777227153</image:loc>
      <image:title>Schmidt Coupling Mechanism Explained: How It Works, Parts, Diagram and Uses</image:title>
      <image:caption>Schmidt Coupling diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/self-adjusting-ladder</loc>
    <lastmod>2026-10-04T17:47:22-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/self-adjusting-ladder.png?v=1777227163</image:loc>
      <image:title>Self-adjusting Ladder Mechanism Explained: Pawl-and-Rack Leveling, Parts, Diagram and Calculator</image:title>
      <image:caption>Self-adjusting Ladder diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/servo-mechanism</loc>
    <lastmod>2026-10-04T17:47:38-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/servo-mechanism.png?v=1777227174</image:loc>
      <image:title>Servo (mechanism) Explained: How It Works, Parts, Block Diagram, and Uses</image:title>
      <image:caption>Servo (mechanism) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/servomechanism</loc>
    <lastmod>2026-10-04T17:47:41-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/servomechanism.png?v=1777227185</image:loc>
      <image:title>Servomechanism Mechanism Explained: How Closed-Loop Control Works, Parts, Diagram, and Uses</image:title>
      <image:caption>Servomechanism diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/shock-absorber</loc>
    <lastmod>2026-10-07T10:35:49-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/shock-absorber.png?v=1777227196</image:loc>
      <image:title>Shock Absorber Mechanism Explained: How It Works, Parts, Damping Formula and Cutaway Diagram</image:title>
      <image:caption>Shock Absorber diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/shuttle-valve</loc>
    <lastmod>2026-10-07T10:54:15-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/shuttle-valve.png?v=1777227207</image:loc>
      <image:title>Shuttle Valve Mechanism Explained: How It Works, OR Logic Diagram, Parts, Uses &amp; Sizing Formula</image:title>
      <image:caption>Shuttle Valve diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/slide-valve</loc>
    <lastmod>2026-10-07T12:52:43-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/slide-valve.png?v=1777227217</image:loc>
      <image:title>Slide Valve Mechanism Explained: How It Works, Diagram, Parts, Port Timing &amp; Steam Engine Uses</image:title>
      <image:caption>Slide Valve diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/slider-mechanism</loc>
    <lastmod>2026-10-04T17:50:59-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/slider-mechanism.png?v=1777227228</image:loc>
      <image:title>Slider (mechanism) Explained: How It Works, Parts, Slider-Crank Formula, Diagram and Uses</image:title>
      <image:caption>Slider (mechanism) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/sliding-contact-mechanism</loc>
    <lastmod>2026-10-07T13:16:19-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/sliding-contact-mechanism.png?v=1777227240</image:loc>
      <image:title>Sliding Contact Mechanism Explained: How It Works, Diagram, Parts, Formula and Uses</image:title>
      <image:caption>Sliding Contact Mechanism diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/solenoid-valve</loc>
    <lastmod>2026-10-07T17:15:53-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/solenoid-valve.png?v=1777227251</image:loc>
      <image:title>Solenoid Valve Mechanism: How It Works, Diagram, Parts, Cv Sizing and Uses Explained</image:title>
      <image:caption>Solenoid Valve diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/spline-mechanical</loc>
    <lastmod>2026-10-04T17:48:34-07:00</lastmod>
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      <image:title>Spline (mechanical) Explained: How It Works, Diagram, Parts, Formula and Real-World Uses</image:title>
      <image:caption>Spline (mechanical) diagram</image:caption>
    </image:image>
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  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/spring-loaded-camming-device</loc>
    <lastmod>2026-10-04T17:48:49-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/spring-loaded-camming-device.png?v=1777227272</image:loc>
      <image:title>Spring-loaded Camming Device Mechanism: How It Works, Cam Angle Geometry &amp; Parts Explained</image:title>
      <image:caption>Spring-loaded Camming Device diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/sprocket</loc>
    <lastmod>2026-10-04T17:48:51-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/sprocket.png?v=1777227285</image:loc>
      <image:title>Sprocket Mechanism: How Chain Drives Work, Pitch Diameter Formula, Parts and Uses Explained</image:title>
      <image:caption>Sprocket diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/star-wheel-mechanism</loc>
    <lastmod>2026-10-04T17:49:04-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/star-wheel-mechanism.png?v=1777227295</image:loc>
      <image:title>Star Wheel Mechanism: How It Works, Diagram, Parts, Formula and Industrial Uses Explained</image:title>
      <image:caption>Star Wheel Mechanism diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/stiction</loc>
    <lastmod>2026-10-05T07:48:23-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/stiction.png?v=1777227308</image:loc>
      <image:title>Stiction: Breakaway Force and Friction Calculator | FIRGELLI</image:title>
      <image:caption>Stiction diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/switching-mechanism</loc>
    <lastmod>2026-10-05T07:49:30-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/switching-mechanism.png?v=1777227318</image:loc>
      <image:title>Switching Mechanism: Snap Action and Sensitivity Scenarios</image:title>
      <image:caption>Switching Mechanism diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/synchronization-gear</loc>
    <lastmod>2026-10-05T07:49:38-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/synchronization-gear.png?v=1777227330</image:loc>
      <image:title>Synchronization Gear: Historical Overview and Phase Concept</image:title>
      <image:caption>Synchronization Gear diagram</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-10-05T07:50:13-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/thomas-coupling.png?v=1777227343</image:loc>
      <image:title>Thomas Coupling: Ideal Parallel-offset Geometry</image:title>
      <image:caption>Thomas Coupling diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/throttle-valve</loc>
    <lastmod>2026-10-05T07:50:36-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/throttle-valve.png?v=1777227355</image:loc>
      <image:title>Butterfly Throttle Valve: Projected Opening Geometry</image:title>
      <image:caption>Throttle Valve diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/throw-away-wheel</loc>
    <lastmod>2026-10-05T07:50:38-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
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      <image:title>Throw-away Wheel: Ideal Circular-motion Geometry</image:title>
      <image:caption>Throw-away Wheel diagram</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-10-05T07:50:43-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/tilting-disc-check-valve.png?v=1777227382</image:loc>
      <image:title>Tilting-disc Check Valve: Eccentric-pivot Geometry</image:title>
      <image:caption>Tilting Disc Check Valve diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/tipping-bucket-rain-gauge</loc>
    <lastmod>2026-10-05T07:50:51-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/tipping-bucket-rain-gauge.png?v=1777227393</image:loc>
      <image:title>Tipping-bucket Rain Gauge: Raw Count and Rainfall Conversion</image:title>
      <image:caption>Tipping Bucket Rain Gauge diagram</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-10-05T07:51:05-07:00</lastmod>
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    <image:image>
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      <image:title>Toggle Switch: Snap-action Arrangement and Observation Calculator</image:title>
      <image:caption>Toggle Switch diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/tourbillon</loc>
    <lastmod>2026-10-05T07:51:19-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/tourbillon-infographic.png?v=1777314913</image:loc>
      <image:title>Tourbillon: Rotating Cage and Timing Calculator</image:title>
      <image:caption>Tourbillon diagram - how do they work</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/treadle-form</loc>
    <lastmod>2026-10-05T07:51:48-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/treadle-form.png?v=1777227429</image:loc>
      <image:title>Treadle Mechanism: Pitman, Flywheel and Ideal Rate Comparison</image:title>
      <image:caption>Treadle (form) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/tripod</loc>
    <lastmod>2026-10-05T07:51:59-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/tripod.png?v=1777227442</image:loc>
      <image:title>Tripod: Ideal Leg Splay and Footprint Geometry</image:title>
      <image:caption>Tripod diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/trundle-wheel</loc>
    <lastmod>2026-10-05T07:52:06-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/trundle-wheel.png?v=1777227452</image:loc>
      <image:title>Trundle Wheel: Ideal Rolling Distance Calculator</image:title>
      <image:caption>Trundle Wheel diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/typewriting-machine</loc>
    <lastmod>2026-10-05T07:52:52-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/typewriting-machine.png?v=1777227464</image:loc>
      <image:title>Typewriter Action: Schematic Motion and Displacement Comparison</image:title>
      <image:caption>Typewriting Machine diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/viscous-coupling</loc>
    <lastmod>2026-10-05T07:54:39-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/viscous-coupling.png?v=1777227475</image:loc>
      <image:title>Viscous Coupling: Plate Animation and Normalized Comparison Calculator</image:title>
      <image:caption>Viscous Coupling diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/viscous-damper</loc>
    <lastmod>2026-10-05T07:54:40-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/viscous-damper.png?v=1777227489</image:loc>
      <image:title>Viscous Damper: Animation, Force-Law and Work Calculator</image:title>
      <image:caption>Viscous Damper diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/wafer-tumbler-lock</loc>
    <lastmod>2026-10-05T07:54:47-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/wafer-tumbler-lock.png?v=1777227502</image:loc>
      <image:title>Wafer Tumbler Lock: Illustration and Single-offset Comparison</image:title>
      <image:caption>Wafer Tumbler Lock diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/wheel-and-axle</loc>
    <lastmod>2026-10-05T07:55:46-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/wheel-and-axle.png?v=1777227514</image:loc>
      <image:title>Wheel and Axle Mechanism: How It Works, Formula, Diagram, and Real-World Uses Explained</image:title>
      <image:caption>Wheel and Axle diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/wheel-hub-assembly</loc>
    <lastmod>2026-10-05T07:55:47-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/wheel-hub-assembly.png?v=1777227525</image:loc>
      <image:title>Wheel Hub Assembly: Ideal Moment and Bearing-row Reaction Calculator</image:title>
      <image:caption>Wheel Hub Assembly diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/wheel-train</loc>
    <lastmod>2026-10-05T07:55:49-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/wheel-train.png?v=1777227536</image:loc>
      <image:title>Wheel Train Mechanism Explained: How It Works, Gear Ratio Formula, Parts, and Horology Uses</image:title>
      <image:caption>Wheel Train diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/winch</loc>
    <lastmod>2026-10-05T07:55:58-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/winch.png?v=1777227547</image:loc>
      <image:title>Winch Mechanism Explained: Diagram, Parts, Gear Reduction and Line Pull Calculator</image:title>
      <image:caption>Winch diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/winchester-magazine-rifle</loc>
    <lastmod>2026-10-05T07:56:00-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/winchester-magazine-rifle.png?v=1777227561</image:loc>
      <image:title>Winchester Magazine Rifle: Historical Mechanism Illustration</image:title>
      <image:caption>Winchester Magazine Rifle diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/windlass</loc>
    <lastmod>2026-10-05T07:56:04-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/windlass.png?v=1777227573</image:loc>
      <image:title>Windlass Mechanism Explained: How It Works, Parts, Formula, Diagram, and Calculator</image:title>
      <image:caption>Windlass diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/wooden-frame-turn-table</loc>
    <lastmod>2026-10-05T07:56:25-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/wooden-frame-turn-table.png?v=1777227584</image:loc>
      <image:title>Wooden Frame Turntable: Entered Static-load Allowance</image:title>
      <image:caption>Wooden Frame Turn-table diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/worm-gear-winch</loc>
    <lastmod>2026-10-05T07:56:40-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/worm-gear-winch.png?v=1777227596</image:loc>
      <image:title>Worm-gear Winch: How It Works, Parts and Drum-Rotation Calculator</image:title>
      <image:caption>Worm-gear Winch diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/mangle-wheel</loc>
    <lastmod>2026-10-05T00:14:23-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/mangle-wheel.png?v=1777227609</image:loc>
      <image:title>Mangle Wheel: Guided Pinion and Oscillating Wheel</image:title>
      <image:caption>Mangle Wheel diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/mangle-rack</loc>
    <lastmod>2026-10-05T00:14:19-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/mangle-rack.png?v=1777227621</image:loc>
      <image:title>Mangle Rack: Fixed Pinion and Reciprocating Double Rack</image:title>
      <image:caption>Mangle Rack diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/differential-mechanical-device</loc>
    <lastmod>2026-10-04T21:25:12-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/differential-mechanical-device.png?v=1777227635</image:loc>
      <image:title>Differential (mechanical Device) Mechanism Explained: How It Works, Parts, Diagram and Animation</image:title>
      <image:caption>Differential (mechanical Device) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/sector-gears-uniform-variable-rotary</loc>
    <lastmod>2026-10-04T17:47:16-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/sector-gears-uniform-variable-rotary.png?v=1777227659</image:loc>
      <image:title>Sector Gears (uniform/variable Rotary) Mechanism Explained: How It Works, Parts, Formula &amp; Uses</image:title>
      <image:caption>Sector Gears (uniform/variable Rotary) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/worm-gear</loc>
    <lastmod>2026-10-05T07:56:28-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/worm-gear.png?v=1777227673</image:loc>
      <image:title>Worm Gear: Animation and Ideal Reduction Calculator</image:title>
      <image:caption>Worm Gear diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/accelerated-circular-motion</loc>
    <lastmod>2026-10-04T22:46:39-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/accelerated-circular-motion.png?v=1777227684</image:loc>
      <image:title>Accelerated Circular Motion Explained: How It Works, Formula, Diagram, and Mechanism Uses</image:title>
      <image:caption>Accelerated Circular Motion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/adjustable-feed-rolls</loc>
    <lastmod>2026-10-04T23:06:08-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/adjustable-feed-rolls.png?v=1777227695</image:loc>
      <image:title>Adjustable Feed Rolls Mechanism: How Gear-Coupled Press Feed Rolls Work, Parts and Diagram</image:title>
      <image:caption>Adjustable Feed Rolls diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/air-pump-movement</loc>
    <lastmod>2026-10-04T23:53:21-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/air-pump-movement.png?v=1777227709</image:loc>
      <image:title>Air-pump Movement Mechanism: How It Works, Diagram, Parts, Formula and Industrial Uses Explained</image:title>
      <image:caption>Air-pump Movement diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/reciprocating-rectilinear-motion</loc>
    <lastmod>2026-10-04T23:53:18-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/reciprocating-rectilinear-motion.png?v=1777227721</image:loc>
      <image:title>Reciprocating Rectilinear Motion Mechanism: How It Works, Diagram, Formula and Uses Explained</image:title>
      <image:caption>Reciprocating Rectilinear Motion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/alternating-motion</loc>
    <lastmod>2026-10-05T00:06:56-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/alternating-motion.png?v=1777227732</image:loc>
      <image:title>Alternating Motion Mechanism: How It Works, Diagram, Parts, Formula and Uses Explained</image:title>
      <image:caption>Alternating Motion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/anti-friction-worm-gear</loc>
    <lastmod>2026-10-05T00:45:27-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/anti-friction-worm-gear.png?v=1777227743</image:loc>
      <image:title>Anti-friction Worm Gear Mechanism: How It Works, Diagram, Parts, Formula and Uses Explained</image:title>
      <image:caption>Anti-friction Worm Gear diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/automatic-clutch-motion-for-reversing</loc>
    <lastmod>2026-10-05T09:03:28-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/automatic-clutch-motion-for-reversing.png?v=1777227756</image:loc>
      <image:title>Automatic Clutch Motion for Reversing: Mechanism, Diagram, Animation, Parts and Uses Explained</image:title>
      <image:caption>Automatic Clutch Motion for Reversing diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/ball-gear</loc>
    <lastmod>2026-10-05T10:11:27-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/ball-gear.png?v=1777227766</image:loc>
      <image:title>Ball Gear Joint: Articulation Animation and Spherical Geometry Calculator</image:title>
      <image:caption>Ball Gear diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/bevel-gears</loc>
    <lastmod>2026-10-04T20:35:26-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/bevel-gears.png?v=1777227778</image:loc>
      <image:title>Bevel Gears Mechanism: How They Work, Pitch Cone Angles, Gear Ratios &amp; Real Uses</image:title>
      <image:caption>Bevel Gears diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/bevel-gear-differential-pitch-system</loc>
    <lastmod>2026-10-04T20:26:00-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/bevel-gear-differential-pitch-system.png?v=1777227791</image:loc>
      <image:title>Bevel Gear Differential Pitch System Mechanism: How It Works, Diagram, Parts, and Uses</image:title>
      <image:caption>Bevel Gear Differential Pitch System diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/bicycle-signal-bell</loc>
    <lastmod>2026-10-04T19:54:51-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/bicycle-signal-bell.png?v=1777227802</image:loc>
      <image:title>Bicycle Signal Bell: Gear and Radial-striker Animation with Lever Calculator</image:title>
      <image:caption>Bicycle Signal Bell diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/brush-wheels-friction</loc>
    <lastmod>2026-10-04T22:05:34-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/brush-wheels-friction.png?v=1777245033</image:loc>
      <image:title>Brush Wheels (friction) Mechanism Explained: How It Works, Parts, Formula, Diagram &amp; Uses</image:title>
      <image:caption>Brush Wheels (friction) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/capstan-gear</loc>
    <lastmod>2026-10-04T22:23:50-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/capstan-gear.png?v=1777245037</image:loc>
      <image:title>Capstan Gear: Planetary Reduction, Direct Drive and Interactive Calculator</image:title>
      <image:caption>Capstan (gear) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/circular-rack</loc>
    <lastmod>2026-10-04T21:28:27-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/circular-rack.png?v=1777245040</image:loc>
      <image:title>Circular Rack: Annular Shaft Teeth, Axial Motion and Pinion Travel Calculator</image:title>
      <image:caption>Circular Rack diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/click-driven-cog-wheel-feed</loc>
    <lastmod>2026-10-04T21:30:22-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/click-driven-cog-wheel-feed.png?v=1777245043</image:loc>
      <image:title>Click-driven Cog-wheel Feed Mechanism: How It Works, Parts, Formula and Indexing Uses Explained</image:title>
      <image:caption>Click-driven Cog-wheel Feed diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/complex-alternating-reciprocal-motion</loc>
    <lastmod>2026-10-04T21:09:58-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/complex-alternating-reciprocal-motion.png?v=1777245047</image:loc>
      <image:title>Complex Alternating Reciprocal Motion Mechanism Explained: How It Works, Parts, Diagram and Uses</image:title>
      <image:caption>Complex Alternating Reciprocal Motion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/compound-epicyclic-train</loc>
    <lastmod>2026-10-04T19:37:48-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/compound-epicyclic-train.png?v=1777245051</image:loc>
      <image:title>Compound Epicyclic Train: Carrier Input, Gear Ratios, Animation and Calculator</image:title>
      <image:caption>Compound Epicyclic Train diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/compound-gear-train</loc>
    <lastmod>2026-10-04T20:04:44-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/compound-gear-train.png?v=1777245054</image:loc>
      <image:title>Compound Gear Train Mechanism: How It Works, Diagram, Formula, and Uses Explained</image:title>
      <image:caption>Compound Gear Train diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/continuous-rotary-motion</loc>
    <lastmod>2026-10-04T20:08:57-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/continuous-rotary-motion.png?v=1777245058</image:loc>
      <image:title>Continuous Rotary Motion Mechanism: How It Works, Diagram, Formula, and Belt-Drive Calculator</image:title>
      <image:caption>Continuous Rotary Motion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/continuous-rotary-via-ratchet-bevel-gears</loc>
    <lastmod>2026-10-04T20:09:03-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/continuous-rotary-via-ratchet-bevel-gears.png?v=1777245061</image:loc>
      <image:title>Continuous Rotary via Ratchet Bevel Gears: How It Works, Parts, Diagram, and Uses Explained</image:title>
      <image:caption>Continuous Rotary via Ratchet Bevel Gears diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/continuous-shaft-motion</loc>
    <lastmod>2026-10-04T20:09:10-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/continuous-shaft-motion.png?v=1777245065</image:loc>
      <image:title>Continuous Shaft Motion Mechanism Explained: How It Works, Diagram, Parts, Formula and Uses</image:title>
      <image:caption>Continuous Shaft Motion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/crown-wheel-and-spur-gear</loc>
    <lastmod>2026-10-04T20:38:55-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/crown-wheel-and-spur-gear.png?v=1777245068</image:loc>
      <image:title>Crown Wheel and Spur Gear Mechanism: How It Works, Parts, Diagram and Right-Angle Drive Uses</image:title>
      <image:caption>Crown Wheel and Spur Gear diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/differential-motions</loc>
    <lastmod>2026-10-04T21:26:17-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/differential-motions.png?v=1777245072</image:loc>
      <image:title>Differential Motions Explained: How a Bevel Differential Works, Parts, Formula, and Uses</image:title>
      <image:caption>Differential Motions diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/differential-screw-and-gear-movement</loc>
    <lastmod>2026-10-04T21:27:27-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/differential-screw-and-gear-movement.png?v=1777245075</image:loc>
      <image:title>Differential Screw and Gear Movement: How It Works, Diagram, Formula, and Precision Uses</image:title>
      <image:caption>Differential Screw and Gear Movement diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/differential-speed</loc>
    <lastmod>2026-10-04T21:28:55-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/differential-speed.png?v=1777245079</image:loc>
      <image:title>Differential Speed: Fixed-Idler Gearing and Coaxial Counter-Rotation</image:title>
      <image:caption>Differential Speed diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/disk-wheel-and-spur-gear-rotary-at-right-angles</loc>
    <lastmod>2026-10-04T21:46:11-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/disk-wheel-and-spur-gear-rotary-at-right-angles.png?v=1777245082</image:loc>
      <image:title>Disk-wheel and Spur Gear (rotary at Right Angles): How the Right-Angle Mechanism Works</image:title>
      <image:caption>Disk-wheel and Spur Gear (rotary at Right Angles) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/doubling-a-revolution-on-same-shaft</loc>
    <lastmod>2026-10-04T22:14:08-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/doubling-a-revolution-on-same-shaft.png?v=1777245086</image:loc>
      <image:title>Doubling a Revolution on Same Shaft: How the Coaxial 1:2 Gear Mechanism Works</image:title>
      <image:caption>Doubling a Revolution on Same Shaft diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/doubling-speed-with-equal-diameter-bevel-gears-six-gear</loc>
    <lastmod>2026-10-04T22:14:12-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/doubling-speed-with-equal-diameter-bevel-gears-six-gear.png?v=1777245089</image:loc>
      <image:title>Doubling Speed with Equal-diameter Bevel Gears (six-gear): How the Mechanism Works, Parts &amp; Uses</image:title>
      <image:caption>Doubling Speed with Equal-diameter Bevel Gears (six-gear) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/doubling-stroke-length-via-rack-and-pinion</loc>
    <lastmod>2026-10-04T22:15:17-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/doubling-stroke-length-via-rack-and-pinion.png?v=1777245092</image:loc>
      <image:title>Doubling Stroke Length via Rack and Pinion: How the 2:1 Motion Multiplier Mechanism Works</image:title>
      <image:caption>Doubling Stroke Length via Rack and Pinion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/doubling-the-length-of-a-crank-stroke</loc>
    <lastmod>2026-10-04T22:15:21-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/doubling-the-length-of-a-crank-stroke.png?v=1777245096</image:loc>
      <image:title>Doubling the Length of a Crank Stroke: How the Rack-and-Pinion Mechanism Works</image:title>
      <image:caption>Doubling the Length of a Crank Stroke diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/doubling-the-number-of-revolutions-on-one-shaft</loc>
    <lastmod>2026-10-04T22:16:26-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/doubling-the-number-of-revolutions-on-one-shaft.png?v=1777245099</image:loc>
      <image:title>Doubling Shaft Revolutions: Historical Six-Bevel Train and Motion Calculator</image:title>
      <image:caption>Doubling the Number of Revolutions on One Shaft diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/eccentric-gear</loc>
    <lastmod>2026-10-04T22:40:25-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/eccentric-gear.png?v=1777245102</image:loc>
      <image:title>Eccentric Gear Train: Elliptical Planetary Animation and Pointer Calculator</image:title>
      <image:caption>Eccentric Gear diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/eccentric-spur-gear-with-link-control</loc>
    <lastmod>2026-10-04T22:43:09-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/eccentric-spur-gear-with-link-control.png?v=1777245106</image:loc>
      <image:title>Eccentric Spur-gear with Link Control Mechanism Explained: How It Works, Parts, Diagram &amp; Uses</image:title>
      <image:caption>Eccentric Spur-gear with Link Control diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/eccentric-wheel-train</loc>
    <lastmod>2026-10-04T22:43:12-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/eccentric-wheel-train.png?v=1777245109</image:loc>
      <image:title>Eccentric Wheel Train Mechanism Explained: How It Works, Diagram, Parts, Formula, and Uses</image:title>
      <image:caption>Eccentric Wheel Train diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/elliptical-spur-gear</loc>
    <lastmod>2026-10-04T23:10:33-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/elliptical-spur-gear.png?v=1777245113</image:loc>
      <image:title>Elliptical Spur Gears: Animation and Variable-Speed Calculator</image:title>
      <image:caption>Elliptical Spur Gear diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/epicyclic-planetary-gear-train</loc>
    <lastmod>2026-10-04T23:17:57-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/epicyclic-planetary-gear-train.png?v=1777245116</image:loc>
      <image:title>Epicyclic / Planetary Gear Train: How It Works, Parts, Ratio Formula, Diagram and Uses Explained</image:title>
      <image:caption>Epicyclic / Planetary Gear Train diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/epicyclic-train-form-1</loc>
    <lastmod>2026-10-04T23:18:00-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/epicyclic-train-form-1.png?v=1777245120</image:loc>
      <image:title>Epicyclic Train (form 1) Mechanism Explained: How It Works, Parts, Willis Ratio and Uses</image:title>
      <image:caption>Epicyclic Train (form 1) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/epicyclic-train-form-4</loc>
    <lastmod>2026-10-04T23:21:02-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/epicyclic-train-form-4.png?v=1777245123</image:loc>
      <image:title>Epicyclic Train (form 4) Explained: Step-Up Planetary Gearbox Mechanism, Diagram &amp; Formula</image:title>
      <image:caption>Epicyclic Train (form 4) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/epicyclic-train-form-5</loc>
    <lastmod>2026-10-04T23:21:06-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/epicyclic-train-form-5.png?v=1777245127</image:loc>
      <image:title>Epicyclic Train (form 5) Mechanism Explained: How It Works, Diagram, Formula &amp; Calculator</image:title>
      <image:caption>Epicyclic Train (form 5) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/epicyclic-train-slow-motion-form</loc>
    <lastmod>2026-10-04T23:21:09-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/epicyclic-train-slow-motion-form.png?v=1777245130</image:loc>
      <image:title>Epicyclic Train (slow-motion Form) Mechanism Explained: How It Works, Diagram, Parts and Uses</image:title>
      <image:caption>Epicyclic Train (slow-motion Form) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/equalizing-pulley</loc>
    <lastmod>2026-10-04T23:22:06-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/equalizing-pulley.png?v=1777245133</image:loc>
      <image:title>Equalizing Pulley: Sheave Motion, Rope Tension and Calculator</image:title>
      <image:caption>Equalizing Pulley diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/evans-friction-cones</loc>
    <lastmod>2026-10-04T23:28:31-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/evans-friction-cones.png?v=1777245137</image:loc>
      <image:title>Evans Friction Cones: Ring-Belt Ratio Calculator | FIRGELLI</image:title>
      <image:caption>Evans Friction Cones diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/flying-machine</loc>
    <lastmod>2026-10-05T13:58:32-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/flying-machine.png?v=1777245141</image:loc>
      <image:title>Flying Machine: Rotating-Arm Worm Drive Calculator | FIRGELLI</image:title>
      <image:caption>Flying Machine diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/friction-cone-variator</loc>
    <lastmod>2026-10-05T19:22:08-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/friction-cone-variator-mechanism.png?v=1791253327</image:loc>
      <image:title>Friction Cone Variator: Contact Radius and Roller Speed</image:title>
      <image:caption>Friction Cone Variator — schematic of the mechanism.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/friction-disc-and-roller</loc>
    <lastmod>2026-10-05T19:27:24-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/friction-disc-and-roller.png?v=1777245148</image:loc>
      <image:title>Friction Disc and Roller: Speed and Disc Torque | FIRGELLI</image:title>
      <image:caption>Friction Disc and Roller diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/friction-gearing-form</loc>
    <lastmod>2026-10-05T19:43:30-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/friction-gearing-form.png?v=1777245151</image:loc>
      <image:title>Friction Gearing: Driver Torque and Utilization | FIRGELLI</image:title>
      <image:caption>Friction Gearing (form) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/friction-clutch-wheels</loc>
    <lastmod>2026-10-05T20:16:58-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/friction-clutch-wheels.png?v=1777245154</image:loc>
      <image:title>Friction-clutch Wheels: Torque Threshold and Demand | FIRGELLI</image:title>
      <image:caption>Friction-clutch Wheels diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/globoid-spiral-gear-wheels</loc>
    <lastmod>2026-10-06T13:58:30-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/globoid-spiral-gear-wheels-mechanism_3c6bd5cd-1083-450d-b8fa-33866bd258e0.png?v=1791320310</image:loc>
      <image:title>Globoid Spiral Gear Wheels: Spherical Spiral and Swinging Pinion</image:title>
      <image:caption>Globoid Spiral Gear Wheels — schematic of the mechanism.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/hunting-tooth-worm-gear</loc>
    <lastmod>2026-10-05T07:18:26-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/hunting-tooth-worm-gear.png?v=1777245162</image:loc>
      <image:title>Hunting Tooth Worm Gear: History and Pairing Calculator | FIRGELLI</image:title>
      <image:caption>Hunting Tooth Worm Gear diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/hypocyclic-gear-train</loc>
    <lastmod>2026-10-05T08:10:35-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/hypocyclic-gear-train.png?v=1777245165</image:loc>
      <image:title>Hypocyclic Gear Train: Fixed-Ring Count-Ratio Calculator | FIRGELLI</image:title>
      <image:caption>Hypocyclic Gear Train diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/intermittent-gears</loc>
    <lastmod>2026-10-05T08:43:50-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/intermittent-gears.png?v=1777245169</image:loc>
      <image:title>Intermittent Gears: Angular Segment Calculator | FIRGELLI</image:title>
      <image:caption>Intermittent Gears diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/intermittent-motion-of-spur-gear</loc>
    <lastmod>2026-10-05T08:46:56-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/intermittent-motion-of-spur-gear.png?v=1777245172</image:loc>
      <image:title>Intermittent Spur Gear: Angular Closure Calculator | FIRGELLI</image:title>
      <image:caption>Intermittent Motion of Spur Gear diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/internal-worm-gear-wheel</loc>
    <lastmod>2026-10-05T08:57:35-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/internal-worm-gear-wheel.png?v=1777245176</image:loc>
      <image:title>Internal Worm Wheel: Ratio and Assumed-Efficiency Calculator | FIRGELLI</image:title>
      <image:caption>Internal Worm-gear Wheel diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/irregular-circular-motion</loc>
    <lastmod>2026-10-06T03:28:31-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/irregular-circular-motion-mechanism.png?v=1791282510</image:loc>
      <image:title>Irregular Circular Motion: Eccentric Gear Train and Speed Calculator</image:title>
      <image:caption>Irregular Circular Motion — schematic of the mechanism.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/irregular-vibratory-motion</loc>
    <lastmod>2026-10-05T09:22:22-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/irregular-vibratory-motion.png?v=1777245183</image:loc>
      <image:title>Irregular Vibratory Motion: Normalized Speed-Profile Calculator | FIRGELLI</image:title>
      <image:caption>Irregular Vibratory Motion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/link-chain-hoist</loc>
    <lastmod>2026-10-04T23:49:16-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/link-chain-hoist.png?v=1777245187</image:loc>
      <image:title>Link Chain Hoist: Manual-Hoist Animation and Ideal Hand-Pull Calculator</image:title>
      <image:caption>Link Chain Hoist diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/motion-by-rolling-contact</loc>
    <lastmod>2026-10-05T08:28:24-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/motion-by-rolling-contact.png?v=1777245190</image:loc>
      <image:title>Rolling Contact: Ideal No-Slip Cylinder Ratio and Travel</image:title>
      <image:caption>Motion by Rolling Contact diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/multiple-speed-gear</loc>
    <lastmod>2026-10-05T08:48:29-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/multiple-speed-gear.png?v=1777245193</image:loc>
      <image:title>Multiple-Speed Gear Set: Three Selectable Fixed-Center Ratios</image:title>
      <image:caption>Multiple Speed Gear diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/multiple-gearing-triangular-wheel-with-friction-rollers</loc>
    <lastmod>2026-10-06T15:50:10-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/multiple-gearing-triangular-wheel-with-friction-rollers.png?v=1777245197</image:loc>
      <image:title>Brown Movement 27: Three-Roller Carrier and Radial-Groove Wheel</image:title>
      <image:caption>Multiple Gearing (triangular Wheel with Friction Rollers) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/oblique-shaft-gears-form-1</loc>
    <lastmod>2026-10-05T09:19:59-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/oblique-shaft-gears-form-1.png?v=1777245200</image:loc>
      <image:title>Oblique-Shaft Gears Form 1: Brown Movement 42</image:title>
      <image:caption>Oblique-shaft Gears (form 1) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/oblique-shaft-gears-form-2</loc>
    <lastmod>2026-10-05T09:21:57-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/oblique-shaft-gears-form-2.png?v=1777245204</image:loc>
      <image:title>Oblique-Shaft Gears Form 2: Brown Movement 43</image:title>
      <image:caption>Oblique-shaft Gears (form 2) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/oblique-tooth-gears-form-1</loc>
    <lastmod>2026-10-05T09:22:00-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/oblique-tooth-gears-form-1.png?v=1777245207</image:loc>
      <image:title>Oblique-Tooth Gears Form 1: Brown Movement 40</image:title>
      <image:caption>Oblique-tooth Gears (form 1) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/oblique-tooth-gears-form-2</loc>
    <lastmod>2026-10-05T09:23:30-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/oblique-tooth-gears-form-2.png?v=1777245211</image:loc>
      <image:title>Oblique-Tooth Gears Form 2: Brown Movement 41</image:title>
      <image:caption>Oblique-tooth Gears (form 2) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/pin-wheel-and-slotted-pinion</loc>
    <lastmod>2026-10-04T07:50:48-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/pin-wheel-and-slotted-pinion.png?v=1777245214</image:loc>
      <image:title>Pin Wheel and Slotted Pinion: Three Selectable Speed Changes</image:title>
      <image:caption>Pin-wheel and Slotted Pinion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/pinion-driving-wheel-arm</loc>
    <lastmod>2026-10-04T08:07:48-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/pinion-driving-wheel-arm.png?v=1777245218</image:loc>
      <image:title>Movement 209: Rolling Contact with Partial Teeth and Forked Catch</image:title>
      <image:caption>Pinion Driving Wheel-arm diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/planetary-motion</loc>
    <lastmod>2026-10-04T09:12:11-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/planetary-motion.png?v=1777245221</image:loc>
      <image:title>Planetary Motion: Exact Fixed-Ring Speed Geometry</image:title>
      <image:caption>Planetary Motion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/pneumatic-grain-elevator</loc>
    <lastmod>2026-10-04T10:18:51-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/pneumatic-grain-elevator.png?v=1777245225</image:loc>
      <image:title>Pneumatic Grain Conveying: Declared Flow Ledger and Connected Suction-Blower Path</image:title>
      <image:caption>Pneumatic Grain Elevator diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/rack-motion</loc>
    <lastmod>2026-10-04T16:30:54-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/rack-motion.png?v=1777245228</image:loc>
      <image:title>Rack Motion: Ideal Module and Pitch Geometry</image:title>
      <image:caption>Rack Motion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/rectangular-gears-varying-speed</loc>
    <lastmod>2026-10-05T02:09:54-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/rectangular-gears-varying-speed.png?v=1777245232</image:loc>
      <image:title>Rectangular and Noncircular Gears: Contact Radii and Instantaneous Speed</image:title>
      <image:caption>Rectangular Gears (varying Speed) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/release-cam</loc>
    <lastmod>2026-10-05T03:41:27-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/release-cam.png?v=1777245235</image:loc>
      <image:title>Release Cam Mechanism: How It Works, Profile Geometry, Parts, and Trip Timing Explained</image:title>
      <image:caption>Release Cam diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/release-rotary-motion</loc>
    <lastmod>2026-10-05T03:44:34-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/release-rotary-motion.png?v=1777245239</image:loc>
      <image:title>Release Rotary Motion: Ball-Detent Torque Limiter Calculator</image:title>
      <image:caption>Release Rotary Motion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/reversing-bevel-gears-with-double-clutch</loc>
    <lastmod>2026-10-05T06:05:12-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/reversing-bevel-gears-with-double-clutch.png?v=1777245242</image:loc>
      <image:title>Reversing Bevel Gears with Double-clutch Mechanism: How It Works, Parts, and Marine Uses Explained</image:title>
      <image:caption>Reversing Bevel Gears with Double-clutch diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/revolution-of-a-pinion</loc>
    <lastmod>2026-10-05T07:12:03-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/revolution-of-a-pinion.png?v=1777245245</image:loc>
      <image:title>Revolution of a Pinion: Rack Travel, Speed and Tooth-Passage Calculator</image:title>
      <image:caption>Revolution of a Pinion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/right-and-left-hand-worm-gear</loc>
    <lastmod>2026-10-04T17:41:53-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/right-and-left-hand-worm-gear.png?v=1777245249</image:loc>
      <image:title>Right- and Left-hand Worm Gear Mechanism: How It Works, Diagram, Parts and Uses Explained</image:title>
      <image:caption>Right- and Left-hand Worm Gear diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/roller-bearing-gear-teeth</loc>
    <lastmod>2026-10-04T17:42:20-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/roller-bearing-gear-teeth.png?v=1777245252</image:loc>
      <image:title>Roller-bearing Gear Teeth Mechanism: How It Works, Parts, Formula, and Industrial Uses Explained</image:title>
      <image:caption>Roller-bearing Gear Teeth diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/rolling-contact-gears-with-forked-catch</loc>
    <lastmod>2026-10-04T17:42:25-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/rolling-contact-gears-with-forked-catch.png?v=1777245256</image:loc>
      <image:title>Rolling-contact Gears with Forked Catch: How the Mechanism Works, Parts and Indexing Uses Explained</image:title>
      <image:caption>Rolling-contact Gears with Forked Catch diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/rotary-motion</loc>
    <lastmod>2026-10-04T17:42:47-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/rotary-motion.png?v=1777245259</image:loc>
      <image:title>Rotary Motion Mechanism: How It Works, Diagram, Formula, Parts and Industrial Uses Explained</image:title>
      <image:caption>Rotary Motion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/saw-tooth-worm-gear</loc>
    <lastmod>2026-10-06T22:13:06-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/saw-tooth-worm-gear.png?v=1777245263</image:loc>
      <image:title>Saw-tooth Worm Gear Mechanism: How It Works, Diagram, Self-Locking Formula &amp; Calculator</image:title>
      <image:caption>Saw-tooth Worm Gear diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/sawmill-feed</loc>
    <lastmod>2026-10-04T17:44:36-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/sawmill-feed.png?v=1777245266</image:loc>
      <image:title>Sawmill Feed Mechanism: How Cable, Rack-and-Pinion, and Hydraulic Feed Works Drive the Carriage</image:title>
      <image:caption>Sawmill Feed diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/scroll-gear</loc>
    <lastmod>2026-10-04T17:47:10-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/scroll-gear.png?v=1777245269</image:loc>
      <image:title>Scroll Gear Mechanism Explained: How Spiral Pitch Curves Create Variable Gear Ratios</image:title>
      <image:caption>Scroll Gear diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/sector-pinion-and-double-rack</loc>
    <lastmod>2026-10-04T17:47:17-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/sector-pinion-and-double-rack.png?v=1777245273</image:loc>
      <image:title>Sector Pinion and Double Rack Mechanism: How It Works, Parts, Formula, and Uses Explained</image:title>
      <image:caption>Sector Pinion and Double Rack diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/slow-forward-and-quick-back-circular-motion</loc>
    <lastmod>2026-10-04T17:44:49-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/slow-forward-and-quick-back-circular-motion.png?v=1777245276</image:loc>
      <image:title>Slow Forward and Quick Back Circular Motion: How the Elliptical Gear Quick-Return Mechanism Works</image:title>
      <image:caption>Slow Forward and Quick Back Circular Motion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/spiral-hoop-gear</loc>
    <lastmod>2026-10-04T17:44:56-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/spiral-hoop-gear.png?v=1777245280</image:loc>
      <image:title>Spiral Hoop Gear Mechanism Explained: Helical Girth Ring, Pinion Drive, Diagram and Calculator</image:title>
      <image:caption>Spiral Hoop Gear diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/spiral-stop-motion-gear</loc>
    <lastmod>2026-10-04T18:36:02-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/spiral-stop-motion-gear.png?v=1777245283</image:loc>
      <image:title>Spiral Stop-motion Gear Mechanism: How It Works, Diagram, Formula and Indexing Uses Explained</image:title>
      <image:caption>Spiral Stop-motion Gear diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/spur-gear-train</loc>
    <lastmod>2026-10-04T17:48:54-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/spur-gear-train.png?v=1777245287</image:loc>
      <image:title>Spur Gear Train Mechanism: How It Works, Diagram, Formula and Calculator</image:title>
      <image:caption>Spur Gear Train diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/spur-gears</loc>
    <lastmod>2026-10-04T22:42:23-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/spur-gears.png?v=1777245290</image:loc>
      <image:title>Spur Gears Mechanism Explained: How They Work, Parts, Diagram, Formula and Uses</image:title>
      <image:caption>Spur Gears diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/step-gearing-continuous-bearing-teeth</loc>
    <lastmod>2026-10-04T17:49:39-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/step-gearing-continuous-bearing-teeth.png?v=1777245294</image:loc>
      <image:title>Step Gearing (continuous Bearing Teeth) Mechanism: How It Works, Parts, Diagram &amp; Industrial Uses</image:title>
      <image:caption>Step Gearing (continuous Bearing Teeth) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/stop-roller-motion</loc>
    <lastmod>2026-10-05T07:48:39-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/stop-roller-motion.png?v=1777245297</image:loc>
      <image:title>Stop Roller Motion: Heart-slot Mechanism and Cycle Travel</image:title>
      <image:caption>Stop Roller Motion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/three-part-worm-screw</loc>
    <lastmod>2026-10-05T07:50:29-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/three-part-worm-screw.png?v=1777245300</image:loc>
      <image:title>Three-part Worm Screw: Ideal Synchronized Chuck Motion</image:title>
      <image:caption>Three-part Worm Screw diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/two-velocity-gears-on-same-shaft</loc>
    <lastmod>2026-10-05T07:52:51-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/two-velocity-gears-on-same-shaft.png?v=1777245304</image:loc>
      <image:title>Two-velocity Gears on One Shaft: Alternative Speed Comparison</image:title>
      <image:caption>Two-velocity Gears on Same Shaft diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/two-worm-wheels-with-one-tooth-difference</loc>
    <lastmod>2026-10-05T07:52:32-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/two-worm-wheels-with-one-tooth-difference.png?v=1777245307</image:loc>
      <image:title>Differential Worm Wheels: Ideal Relative Rotation Calculator</image:title>
      <image:caption>Two Worm-wheels with One Tooth Difference diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/two-toothed-pinion</loc>
    <lastmod>2026-10-05T07:52:48-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/two-toothed-pinion.png?v=1777245310</image:loc>
      <image:title>Two-toothed Pinion: Ideal Intermittent Step Calculator</image:title>
      <image:caption>Two-toothed Pinion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/two-toothed-pinion-cam-pinion</loc>
    <lastmod>2026-10-05T07:52:49-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/two-toothed-pinion-cam-pinion.png?v=1777245314</image:loc>
      <image:title>Two-toothed Cam Pinion: Ideal Indexing-event Calculator</image:title>
      <image:caption>Two-toothed Pinion (cam Pinion) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/uniform-speed-of-sectional-spur-gear</loc>
    <lastmod>2026-10-05T07:53:00-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/uniform-speed-of-sectional-spur-gear.png?v=1777245317</image:loc>
      <image:title>Sectional Spur Gear: Ideal Advance and Dwell Fractions</image:title>
      <image:caption>Uniform Speed of Sectional Spur Gear diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/variable-circular-motion-by-crown-wheel-and-pinion</loc>
    <lastmod>2026-10-05T07:53:34-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
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      <image:title>Eccentric Crown Wheel and Pinion: Local Ratio Calculator</image:title>
      <image:caption>Variable Circular Motion by Crown-wheel and Pinion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/variable-rotary-motion-via-elliptical-gear-and-slotted-bar</loc>
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    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/variable-rotary-motion-via-elliptical-gear-and-slotted-bar.png?v=1777245325</image:loc>
      <image:title>Elliptical Gear and Slotted Bar: Ideal Phase and Projection</image:title>
      <image:caption>Variable Rotary Motion via Elliptical Gear and Slotted Bar diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/variable-sectional-motion</loc>
    <lastmod>2026-10-05T07:53:56-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/variable-sectional-motion.png?v=1777245328</image:loc>
      <image:title>Variable Sectional Motion: Two-interval Speed Comparison</image:title>
      <image:caption>Variable Sectional Motion diagram</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-10-05T07:54:02-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/variable-throw-traversing-bar.png?v=1777245332</image:loc>
      <image:title>Variable Throw: Compare Two Ideal Traversing Strokes</image:title>
      <image:caption>Variable Throw Traversing Bar diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/variable-vibrating-motion</loc>
    <lastmod>2026-10-05T07:54:08-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/variable-vibrating-motion.png?v=1777245335</image:loc>
      <image:title>Variable Vibrating Motion: Equal-frequency Amplitude Comparison</image:title>
      <image:caption>Variable Vibrating Motion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/vertical-drop-hammer</loc>
    <lastmod>2026-10-05T07:54:18-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/vertical-drop-hammer.png?v=1777245339</image:loc>
      <image:title>Vertical Drop Hammer: Ideal Energy and Momentum Comparison</image:title>
      <image:caption>Vertical Drop Hammer diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/worm-screw-rack</loc>
    <lastmod>2026-10-05T07:56:29-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/worm-screw-rack.png?v=1777245342</image:loc>
      <image:title>Worm Screw Rack: Animation and Lead-Speed Calculator</image:title>
      <image:caption>Worm Screw Rack diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/worm-and-pinion-modified</loc>
    <lastmod>2026-10-05T07:56:31-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/worm-and-pinion-modified.png?v=1777245346</image:loc>
      <image:title>Worm-and-pinion (modified): How the Globoid Hybrid Gear Works, Parts &amp; Industrial Uses</image:title>
      <image:caption>Worm-and-pinion (modified) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/worm-and-pinion-feed-roll-drive</loc>
    <lastmod>2026-10-05T07:56:33-07:00</lastmod>
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      <image:title>Worm-and-pinion Feed Roll Drive Mechanism: How It Works, Diagram, Parts, Formula and Uses</image:title>
      <image:caption>Worm-and-pinion Feed Roll Drive diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/gear-pump</loc>
    <lastmod>2026-10-05T03:36:29-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/gear-pump.png?v=1777245352</image:loc>
      <image:title>External Gear Pump: Flow, Fluid Power and Ideal Torque | FIRGELLI</image:title>
      <image:caption>Gear Pump diagram</image:caption>
    </image:image>
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  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/vane-pump</loc>
    <lastmod>2026-10-05T07:53:28-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/vane-pump.png?v=1777245356</image:loc>
      <image:title>Vane Pump: Ideal Flow, Fluid Power and Torque Calculator</image:title>
      <image:caption>Vane Pump diagram</image:caption>
    </image:image>
  </url>
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    <lastmod>2026-10-04T22:38:40-07:00</lastmod>
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      <image:title>Reciprocating Motion Mechanism: How It Works, Slider-Crank Diagram, Parts, Formula and Uses</image:title>
      <image:caption>Reciprocating Motion diagram</image:caption>
    </image:image>
  </url>
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      <image:title>Aeolipile Mechanism Explained: How Hero&apos;s Steam Engine Works, Parts, Torque Formula &amp; Uses</image:title>
      <image:caption>Aeolipile diagram</image:caption>
    </image:image>
  </url>
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    <lastmod>2026-10-04T23:47:33-07:00</lastmod>
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      <image:title>Air Pump Mechanism Explained: How It Works, Parts, Diagram, Volumetric Efficiency &amp; Uses</image:title>
      <image:caption>Air Pump diagram</image:caption>
    </image:image>
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      <image:title>Anchored Ferry Boat Mechanism Explained: How Reaction Ferries Use River Current to Cross</image:title>
      <image:caption>Anchored Ferry Boat diagram</image:caption>
    </image:image>
  </url>
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    <loc>https://www.firgelliauto.com/blogs/mechanisms/archimedian-screw-water-lift</loc>
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      <image:title>Archimedian Screw Water Lift: How It Works, Parts, Diagram and Formula Explained</image:title>
      <image:caption>Archimedian Screw Water Lift diagram</image:caption>
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    <loc>https://www.firgelliauto.com/blogs/mechanisms/automatic-flush-sewer-tank</loc>
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      <image:title>Automatic Flush Sewer Tank: Bell-Siphon Motion and Average Flow Calculator</image:title>
      <image:caption>Automatic Flush Sewer Tank diagram</image:caption>
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  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/automatic-sprinkler</loc>
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      <image:title>Automatic Fire Sprinkler: Thermal Release, K-Factor and Flow Calculator</image:title>
      <image:caption>Automatic Sprinkler diagram</image:caption>
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      <image:title>Automatic Water Ejector Mechanism: How It Works, Diagram, Parts, Formula and Uses Explained</image:title>
      <image:caption>Automatic Water Ejector diagram</image:caption>
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      <image:title>Balance Pump Mechanism: How It Works, Diagram, Parts, Formula and Uses Explained</image:title>
      <image:caption>Balance Pump diagram</image:caption>
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      <image:title>Ball and Jet Nozzle Mechanism: How It Works, Cross-Section Diagram, Parts, Formula and Uses</image:title>
      <image:caption>Ball and Jet Nozzle diagram</image:caption>
    </image:image>
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  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/bellows-double-acting-pump</loc>
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      <image:title>Bellows / Double-acting Pump Mechanism: How It Works, Parts, Diagram and Uses Explained</image:title>
      <image:caption>Bellows / Double-acting Pump diagram</image:caption>
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      <image:title>Bibb Valve Mechanism: How a Hose Bibb Works, Parts, Cv Flow Formula and Diagram</image:title>
      <image:caption>Bibb diagram</image:caption>
    </image:image>
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      <image:title>Ejector or Jet Pump Mechanism Explained: How It Works, Parts, Diagram, Formula and Uses</image:title>
      <image:caption>Ejector or Jet Pump diagram</image:caption>
    </image:image>
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      <image:title>Breast Water Wheel Mechanism Explained: How It Works, Parts, Diagram, and Efficiency</image:title>
      <image:caption>Breast Water Wheel diagram</image:caption>
    </image:image>
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      <image:title>Lift Pump Mechanism Explained: How It Works, Parts, Diagram, and Hand Pump Uses</image:title>
      <image:caption>Lift Pump diagram</image:caption>
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      <image:title>Current Wheel Water Lift: Radial Troughs, Hollow Shaft and Delivery Calculator</image:title>
      <image:caption>Current Wheel Water Lift diagram</image:caption>
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      <image:title>Buckets of a Pelton Water Wheel: Mechanism, Parts, and How They Work Explained</image:title>
      <image:caption>Buckets of a Pelton Water Wheel diagram</image:caption>
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      <image:title>Camden Turbine Mechanism Explained: How It Works, Diagram, Parts, Formula and Uses</image:title>
      <image:caption>Camden Turbine diagram</image:caption>
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      <image:title>Cary Rotary Pump: Cam-Guided Vanes, Animation and Flow Calculator</image:title>
      <image:caption>Cary Rotary Pump diagram</image:caption>
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      <image:title>Chain Pump Mechanism Explained: How It Works, Diagram, Parts, Formula and Uses</image:title>
      <image:caption>Chain Pump diagram</image:caption>
    </image:image>
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      <image:caption>Chapman Aspirator or Vacuum Pump diagram</image:caption>
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      <image:caption>Cochrane Rotary Pump diagram</image:caption>
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      <image:caption>Compound Beam Pumping Engine diagram</image:caption>
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      <image:caption>Current Meter diagram</image:caption>
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      <image:caption>Current Motor diagram</image:caption>
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      <image:caption>Dean Steam Pump diagram</image:caption>
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      <image:title>Diaphragm Pump Mechanism: How It Works, Parts, Diagram, and Industrial Uses Explained</image:title>
      <image:caption>Diaphragm Pump diagram</image:caption>
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      <image:title>Diaphragm Pump Mechanism: Crank Drive, Valves and Flow Calculator</image:title>
      <image:caption>Diaphragm pump diagram</image:caption>
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      <image:caption>Disc Valve and Guard diagram</image:caption>
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      <image:caption>Disc Water Meter diagram</image:caption>
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      <image:caption>Domestic Filter diagram</image:caption>
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      <image:caption>Double-acting Differential Pump diagram</image:caption>
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      <image:caption>Double-acting Force Pump diagram</image:caption>
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      <image:caption>Double-acting Lift and Force Pump diagram</image:caption>
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      <image:caption>Double-beat Disc Valve diagram</image:caption>
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      <image:caption>Double-piston Reaction Hydraulic Ram diagram</image:caption>
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      <image:caption>Driven Well diagram</image:caption>
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      <image:title>Emery Rotary Pump: Guided Wings and an Eccentric Hollow Driver</image:title>
      <image:caption>Emery Rotary Pump diagram</image:caption>
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      <image:caption>Filtering Cistern diagram</image:caption>
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      <image:caption>Flexible Pipe Joints diagram</image:caption>
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      <image:caption>Flexible Water Main diagram</image:caption>
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      <image:caption>Four Stage Centrifugal Pump diagram</image:caption>
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      <image:caption>Fourneron Turbine diagram</image:caption>
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      <image:caption>Half-Yoke Connection — schematic of the mechanism.</image:caption>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/hydrostatic-jack.png?v=1777395744</image:loc>
      <image:title>Hydrostatic Jack: Ideal Two-Piston Force and Travel Calculator | FIRGELLI</image:title>
      <image:caption>Hydrostatic Jack diagram</image:caption>
    </image:image>
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  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/impact-water-wheel</loc>
    <lastmod>2026-10-05T08:25:45-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/impact-water-wheel.png?v=1777395748</image:loc>
      <image:title>Impact Water Wheel: Normalized Velocity-Component Calculator | FIRGELLI</image:title>
      <image:caption>Impact Water Wheel diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/iron-overshot-wheel</loc>
    <lastmod>2026-10-05T09:13:20-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/iron-overshot-wheel.png?v=1777395751</image:loc>
      <image:title>Iron Overshot Wheel: Flow, Head and Power Calculator | FIRGELLI</image:title>
      <image:caption>Iron Overshot Wheel diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/jonval-turbine</loc>
    <lastmod>2026-10-06T18:56:27-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/jonval-turbine.png?v=1777395754</image:loc>
      <image:title>Jonval Turbine: Axial-Flow Illustration and Power Calculator | FIRGELLI</image:title>
      <image:caption>Jonval Turbine diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/knott-rotary-pump</loc>
    <lastmod>2026-10-06T19:11:19-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/knott-rotary-pump.png?v=1777395757</image:loc>
      <image:title>Knott Rotary Pump: Historical Eccentric-Piston Layout and Calculator | FIRGELLI</image:title>
      <image:caption>Knott Rotary Pump diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/lancaster-turbine</loc>
    <lastmod>2026-10-06T21:28:41-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/lancaster-turbine.png?v=1777395760</image:loc>
      <image:title>Lancaster Turbine: Downward Flow and Water-Power Calculator | FIRGELLI</image:title>
      <image:caption>Lancaster Turbine diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/leffel-double-runner-turbine</loc>
    <lastmod>2026-10-04T20:29:04-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/leffel-double-runner-turbine.png?v=1777395764</image:loc>
      <image:title>Leffel Double-runner Turbine: How It Works, Parts, Diagram, and Micro-Hydro Uses Explained</image:title>
      <image:caption>Leffel Double-runner Turbine diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/lift-and-force-pump</loc>
    <lastmod>2026-10-04T23:38:13-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/lift-and-force-pump.png?v=1777395767</image:loc>
      <image:title>Lift and Force Pump Mechanism Explained: How It Works, Parts, Diagram, and Uses</image:title>
      <image:caption>Lift and Force Pump diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/lift-pump-form-2</loc>
    <lastmod>2026-10-04T23:41:21-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/lift-pump-form-2.png?v=1777395773</image:loc>
      <image:title>Lift Pump (form 2) Mechanism Explained: How It Works, Diagram, Parts, Uses &amp; Calculator</image:title>
      <image:caption>Lift Pump (form 2) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/mason-water-pressure-regulator</loc>
    <lastmod>2026-10-05T00:20:53-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/mason-water-pressure-regulator.png?v=1777395776</image:loc>
      <image:title>Mason Water-pressure Regulator: Historical Diaphragm-and-Spring Operation</image:title>
      <image:caption>Mason Water-pressure Regulator diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/milk-cooler</loc>
    <lastmod>2026-10-05T00:45:32-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/milk-cooler.png?v=1777395780</image:loc>
      <image:title>Milk Cooler: Product Heat Removal</image:title>
      <image:caption>Milk Cooler diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/miscellaneous-hydraulic-motion</loc>
    <lastmod>2026-09-05T12:21:45-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/miscellaneous-hydraulic-motion.png?v=1777395783</image:loc>
      <image:title>Miscellaneous Hydraulic Motion Mechanism: How Rotary, Vane and Oscillating Actuators Work</image:title>
      <image:caption>Miscellaneous Hydraulic Motion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/model-turbine</loc>
    <lastmod>2026-10-05T00:53:44-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/model-turbine.png?v=1777395786</image:loc>
      <image:title>Hydraulic Model Turbine: Ideal Speed and Discharge Similitude</image:title>
      <image:caption>Model Turbine diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/montgolfier-s-water-ram</loc>
    <lastmod>2026-10-05T08:23:53-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/montgolfier-s-water-ram.png?v=1777395790</image:loc>
      <image:title>Montgolfier Hydraulic Ram: Cycle and Energy Balance</image:title>
      <image:caption>Montgolfier&apos;s Water Ram diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/mueller-water-pressure-regulator</loc>
    <lastmod>2026-10-05T08:36:38-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/mueller-water-pressure-regulator.png?v=1777395793</image:loc>
      <image:title>Mueller Water-Pressure Regulator: Historical Differential-Piston Principle</image:title>
      <image:caption>Mueller Water-pressure Regulator diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/multiple-ball-valve</loc>
    <lastmod>2026-10-05T08:38:32-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/multiple-ball-valve.png?v=1777395796</image:loc>
      <image:title>Multiple Ball-Valve Manifold: Independent Quarter-Turn Path States</image:title>
      <image:caption>Multiple Ball Valve diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/multiple-ring-valve</loc>
    <lastmod>2026-10-05T08:46:20-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/multiple-ring-valve.png?v=1777395799</image:loc>
      <image:title>Multiple-Ring Valve: Concentric Rings and Geometric Curtain Area</image:title>
      <image:caption>Multiple Ring Valve diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/munson-double-turbine</loc>
    <lastmod>2026-10-05T08:54:48-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/munson-double-turbine.png?v=1777395802</image:loc>
      <image:title>Munson Double Turbine: Upward and Downward Flow</image:title>
      <image:caption>Munson Double Turbine diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/overshot-water-wheel</loc>
    <lastmod>2026-10-05T09:47:14-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/overshot-water-wheel.png?v=1777395806</image:loc>
      <image:title>Overshot Water Wheel: Gross Water Power and Geometry</image:title>
      <image:caption>Overshot Water Wheel diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/pattison-rotary-pump</loc>
    <lastmod>2026-10-05T10:08:46-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/pattison-rotary-pump.png?v=1777395811</image:loc>
      <image:title>Pattison Rotary Pump: Hiscox 541 Guided-Wing Mechanism</image:title>
      <image:caption>Pattison Rotary Pump diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/pearsall-s-hydraulic-ram-and-air-compressor</loc>
    <lastmod>2026-10-05T10:12:42-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
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      <image:title>Pearsall Hydraulic Ram and Air Compressor: Hiscox 553</image:title>
      <image:caption>Pearsall&apos;s Hydraulic Ram and Air Compressor diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/pelton-water-wheel</loc>
    <lastmod>2026-10-05T10:16:52-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/pelton-water-wheel.png?v=1777395818</image:loc>
      <image:title>Pelton Water Wheel: Ideal Jet and Runner Kinematics</image:title>
      <image:caption>Pelton Water Wheel diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/pendulum-water-lift</loc>
    <lastmod>2026-10-04T06:55:28-07:00</lastmod>
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      <image:title>Pendulum Water Lift: Ideal Timing and Linkage Geometry</image:title>
      <image:caption>Pendulum Water Lift diagram</image:caption>
    </image:image>
  </url>
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    <loc>https://www.firgelliauto.com/blogs/mechanisms/porous-water-filter</loc>
    <lastmod>2026-10-04T11:17:35-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/porous-water-filter.png?v=1777395824</image:loc>
      <image:title>Porous Water Filter: Declared Darcy Flow Through a Sealed Element</image:title>
      <image:caption>Porous Water Filter diagram</image:caption>
    </image:image>
  </url>
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    <loc>https://www.firgelliauto.com/blogs/mechanisms/portable-hydraulic-riveter</loc>
    <lastmod>2026-10-04T11:42:38-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/portable-hydraulic-riveter.png?v=1777395828</image:loc>
      <image:title>Portable Hydraulic Riveter: Declared Pull-Side Area and Force</image:title>
      <image:caption>Portable Hydraulic Riveter diagram</image:caption>
    </image:image>
  </url>
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    <loc>https://www.firgelliauto.com/blogs/mechanisms/pump-water-pressure-regulating-valve</loc>
    <lastmod>2026-10-04T15:23:14-07:00</lastmod>
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      <image:title>Direct-Acting Pressure Regulator: Declared P×A Force Ledger</image:title>
      <image:caption>Pump Water-pressure Regulating Valve diagram</image:caption>
    </image:image>
  </url>
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    <loc>https://www.firgelliauto.com/blogs/mechanisms/quimby-screw-pump</loc>
    <lastmod>2026-10-04T16:20:18-07:00</lastmod>
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      <image:title>Quimby Screw Pump: Declared Flow and Power Ledger</image:title>
      <image:caption>Quimby Screw Pump diagram</image:caption>
    </image:image>
  </url>
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    <loc>https://www.firgelliauto.com/blogs/mechanisms/railway-water-lift</loc>
    <lastmod>2026-10-04T19:56:57-07:00</lastmod>
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      <image:title>Railway Water Trough Scoop: How It Works, Diagram &amp; Calculator</image:title>
      <image:caption>Railway Water Lift diagram</image:caption>
    </image:image>
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      <image:title>Ramelli Rotary Pump Mechanism Explained: How It Works, Diagram, Parts, Formula and Uses</image:title>
      <image:caption>Ramelli Rotary Pump diagram</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-10-05T04:32:14-07:00</lastmod>
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      <image:title>Repsold Rotary Pump: Historical Principle and Rotation Calculator</image:title>
      <image:caption>Repsold Rotary Pump diagram</image:caption>
    </image:image>
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      <image:title>Reversible Filter Mechanism: How It Works, Check-Valve Bridge Diagram, Parts and Uses</image:title>
      <image:caption>Reversible Filter diagram</image:caption>
    </image:image>
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      <image:title>Rotary Pump Mechanism Explained: How It Works, Parts, Diagram, Formula and Uses</image:title>
      <image:caption>Rotary Pump diagram</image:caption>
    </image:image>
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      <image:title>Rotary Pump (form 1) Mechanism: How It Works, Parts, Formula, Diagram &amp; Applications Explained</image:title>
      <image:caption>Rotary Pump (form 1) diagram</image:caption>
    </image:image>
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    <lastmod>2026-10-04T17:42:52-07:00</lastmod>
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      <image:title>Rotary Pump (form 2) Mechanism: How It Works, Diagram, Parts, Formula &amp; Uses Explained</image:title>
      <image:caption>Rotary Pump (form 2) diagram</image:caption>
    </image:image>
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      <image:title>Sand Auger Mechanism Explained: How It Works, Parts, Capacity Formula and Industrial Uses</image:title>
      <image:caption>Sand Auger diagram</image:caption>
    </image:image>
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      <image:title>Self-acting Weir Mechanism Explained: How It Works, Parts, Formula and Uses in Canals</image:title>
      <image:caption>Self-acting Weir diagram</image:caption>
    </image:image>
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    <lastmod>2026-10-04T18:25:26-07:00</lastmod>
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      <image:title>Silent Hydraulic Ram Mechanism: How It Works, Diagram, Parts, Sizing Calculator and Uses</image:title>
      <image:caption>Silent Hydraulic Ram diagram</image:caption>
    </image:image>
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      <image:caption>Siphon diagram</image:caption>
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      <image:caption>Spray Jet Nozzle diagram</image:caption>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/steam-trap-form-1.png?v=1777395876</image:loc>
      <image:title>Steam Trap (form 1) Mechanism: How a Float-Thermostatic Trap Works, Parts, Sizing &amp; Uses</image:title>
      <image:caption>Steam Trap (form 1) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/steam-trap-form-2</loc>
    <lastmod>2026-10-04T17:49:26-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/steam-trap-form-2.png?v=1777395880</image:loc>
      <image:title>Steam Trap (form 2) Mechanism, Diagram, Parts, Uses, and Sizing Formula Explained</image:title>
      <image:caption>Steam Trap (form 2) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/stoneware-filter</loc>
    <lastmod>2026-10-05T07:48:36-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/stoneware-filter.png?v=1777395883</image:loc>
      <image:title>Stoneware Filter: Two-Jar Animation and Batch Calculator | FIRGELLI</image:title>
      <image:caption>Stoneware Filter diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/swain-turbine</loc>
    <lastmod>2026-10-06T16:16:00-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/swain-turbine.png?v=1777395886</image:loc>
      <image:title>Swain Turbine Mechanism: How This Low-Head Reaction Water Turbine Works, Parts &amp; Uses</image:title>
      <image:caption>Swain Turbine diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/swape-or-new-engine-sweep</loc>
    <lastmod>2026-10-05T07:49:12-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/swape-or-new-engine-sweep.png?v=1777395889</image:loc>
      <image:title>Swape or New England Sweep: Well-Lifting Lever and Moment Calculator</image:title>
      <image:caption>Swape or New Engine Sweep diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/toggle-clip-pipe-joint</loc>
    <lastmod>2026-10-05T07:50:58-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/toggle-clip-pipe-joint.png?v=1777395892</image:loc>
      <image:title>Toggle Clip Pipe Joint: Sanitary Connection and Range Calculator</image:title>
      <image:caption>Toggle Clip Pipe Joint diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/tramp-pumping-device</loc>
    <lastmod>2026-10-05T07:51:28-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/tramp-pumping-device.png?v=1777395896</image:loc>
      <image:title>Tramp Pumping Device: Ideal Static Intensifier Model</image:title>
      <image:caption>Tramp Pumping Device diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/tri-axial-rotary-pump</loc>
    <lastmod>2026-10-05T07:51:54-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/tri-axial-rotary-pump.png?v=1777395899</image:loc>
      <image:title>Tri-axial Rotary Pump: Three-screw Arrangement and Flow Comparison</image:title>
      <image:caption>Tri-axial Rotary Pump diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/turbine-and-gate</loc>
    <lastmod>2026-10-05T07:52:15-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/turbine-and-gate.png?v=1777395902</image:loc>
      <image:title>Turbine and Wicket Gates: Hydraulic Power and Torque Comparison</image:title>
      <image:caption>Turbine and Gate diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/universal-pipe-joint</loc>
    <lastmod>2026-10-05T07:53:08-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/universal-pipe-joint.png?v=1777395906</image:loc>
      <image:title>Universal Pipe Joint: Ideal Angle-sharing Comparison</image:title>
      <image:caption>Universal Pipe Joint diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/upward-flow-filter</loc>
    <lastmod>2026-10-05T07:53:11-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/upward-flow-filter.png?v=1777395909</image:loc>
      <image:title>Upflow Filter: Superficial Velocity and Bed-expansion Geometry</image:title>
      <image:caption>Upward Flow Filter diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/vacuum-jet-condenser-and-rotary-pump</loc>
    <lastmod>2026-10-05T07:53:17-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/vacuum-jet-condenser-and-rotary-pump.png?v=1777395912</image:loc>
      <image:title>Jet Condenser: Ideal Dynamic Pressure and Liquid-head Comparison</image:title>
      <image:caption>Vacuum Jet Condenser and Rotary Pump diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/variable-compensating-weights</loc>
    <lastmod>2026-10-05T07:53:36-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/variable-compensating-weights.png?v=1777395915</image:loc>
      <image:title>Variable Compensating Weights: Ideal Hydraulic Pressure Calculator</image:title>
      <image:caption>Variable Compensating Weights diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/volute-turbine</loc>
    <lastmod>2026-10-05T07:54:43-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/volute-turbine.png?v=1777395918</image:loc>
      <image:title>Volute Turbine: Scroll Animation and Ideal Area-Flow Calculator</image:title>
      <image:caption>Volute Turbine diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/ward-flexible-pipe-joint</loc>
    <lastmod>2026-10-05T07:54:51-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/ward-flexible-pipe-joint.png?v=1777395921</image:loc>
      <image:title>Ward Flexible Pipe Joint: Animation and Nominal Thrust Calculator</image:title>
      <image:caption>Ward Flexible Pipe Joint diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/warren-central-discharge-turbine</loc>
    <lastmod>2026-10-05T07:54:54-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/warren-central-discharge-turbine.png?v=1777395928</image:loc>
      <image:title>Warren Central Discharge Turbine: Animation and Hydraulic-Power Calculator</image:title>
      <image:caption>Warren Central Discharge Turbine diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/water-meter</loc>
    <lastmod>2026-10-05T07:55:03-07:00</lastmod>
    <changefreq>weekly</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/water-meter.png?v=1777395931</image:loc>
      <image:title>Water Meter: Pulse Animation and Volume Calculator</image:title>
      <image:caption>Water Meter diagram</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-10-05T07:55:05-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/water-purifying-filter.png?v=1777395934</image:loc>
      <image:title>Water Purifying Filter: Animation and Gauge-Difference Calculator</image:title>
      <image:caption>Water Purifying Filter diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/water-raising-machine-form</loc>
    <lastmod>2026-10-05T07:55:07-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/water-raising-machine-form.png?v=1777395937</image:loc>
      <image:title>Water Raising Machine: Archimedes Screw Animation and Gap Comparison</image:title>
      <image:caption>Water Raising Machine (form) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/water-velocity-indicator-and-register</loc>
    <lastmod>2026-10-05T07:55:08-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/water-velocity-indicator-and-register.png?v=1777395941</image:loc>
      <image:title>Water Velocity Indicator: Propeller Animation and Flow Calculator</image:title>
      <image:caption>Water Velocity Indicator and Register diagram</image:caption>
    </image:image>
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  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/well-pulley-and-buckets</loc>
    <lastmod>2026-10-05T07:55:41-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/well-pulley-and-buckets.png?v=1777395944</image:loc>
      <image:title>Well Pulley and Buckets Mechanism Explained: How a Fixed Sheave Lifts Water from Hand-Dug Wells</image:title>
      <image:caption>Well Pulley and Buckets diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/worthington-duplex-pump</loc>
    <lastmod>2026-10-05T07:56:44-07:00</lastmod>
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      <image:title>Worthington Duplex Pump Mechanism: How the Cross-Coupled Steam Valve Linkage Works, Parts and Uses</image:title>
      <image:caption>Worthington Duplex Pump diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/angular-shaft-coupling</loc>
    <lastmod>2026-10-05T00:33:29-07:00</lastmod>
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      <image:title>Angular Shaft Coupling Mechanism: How It Works, Cardan Joint Diagram, Parts, Formula and Uses</image:title>
      <image:caption>Angular Shaft Coupling diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/shaft-coupling</loc>
    <lastmod>2026-10-07T09:57:09-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/shaft-coupling.png?v=1777395955</image:loc>
      <image:title>Shaft Coupling: Flexible Connection, Animation and Alignment Calculator</image:title>
      <image:caption>Shaft Coupling diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/rack-and-pinion</loc>
    <lastmod>2026-10-04T20:43:12-07:00</lastmod>
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      <image:title>Rack and Pinion Mechanism: How It Works, Diagram, Formula, Calculator and Real-World Uses</image:title>
      <image:caption>Rack and Pinion diagram</image:caption>
    </image:image>
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      <image:title>Rectilinear Vibrating Motion Mechanism: How It Works, Scotch Yoke Diagram, Formula and Uses</image:title>
      <image:caption>Rectilinear Vibrating Motion diagram</image:caption>
    </image:image>
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    <loc>https://www.firgelliauto.com/blogs/mechanisms/traverse-motion</loc>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/traverse-motion.png?v=1777395964</image:loc>
      <image:title>Traverse Motion: Pitch-to-diameter Comparison</image:title>
      <image:caption>Traverse Motion diagram</image:caption>
    </image:image>
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  <url>
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    <lastmod>2026-10-04T21:01:44-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/almond-angular-shaft-coupling.png?v=1777395967</image:loc>
      <image:title>Almond Angular Shaft Coupling Mechanism: How It Works, Parts, Formula, and Uses Explained</image:title>
      <image:caption>Almond Angular Shaft Coupling diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/alternating-rectilinear-via-worm-and-rack</loc>
    <lastmod>2026-10-04T21:09:00-07:00</lastmod>
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      <image:title>Alternating Rectilinear via Worm and Rack: How the Mechanism Works, Parts, Diagram and Uses</image:title>
      <image:caption>Alternating Rectilinear via Worm and Rack diagram</image:caption>
    </image:image>
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  <url>
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    <lastmod>2026-10-04T21:18:09-07:00</lastmod>
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      <image:title>Angular Wipers: Rockshaft, Inclined Toe and Guided-rod Animation</image:title>
      <image:caption>Angular Wipers diagram</image:caption>
    </image:image>
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      <image:title>Ball Socket Ratchet Mechanism Explained: How It Works, Parts, Formula, and Uses</image:title>
      <image:caption>Ball Socket Ratchet diagram</image:caption>
    </image:image>
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    <lastmod>2026-10-04T20:25:57-07:00</lastmod>
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      <image:title>Bevelled Disc Cam Mechanism: How It Works, Diagram, Formula, Animation and Industrial Uses</image:title>
      <image:caption>Bevelled Disc Cam diagram</image:caption>
    </image:image>
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      <image:title>Brownell Crank Motion: Tangent-slide Geometry and Treadle Calculator</image:title>
      <image:caption>Brownell Crank Motion diagram</image:caption>
    </image:image>
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      <image:caption>Cam Sectors diagram</image:caption>
    </image:image>
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      <image:title>Centrifugal Safety Catch for Hoisting Drums: How It Works, Parts, Formula &amp; Uses Explained</image:title>
      <image:caption>Centrifugal Safety Catch for Hoisting Drums diagram</image:caption>
    </image:image>
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      <image:title>Clover-leaf Cam: Three-Lobe Opposed-Roller Motion and Travel Calculator</image:title>
      <image:caption>Clover-leaf Cam diagram</image:caption>
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      <image:title>Combination Disk-and-arm Reciprocator Mechanism: How It Works, Parts, Formula and Uses</image:title>
      <image:caption>Combination Disk-and-arm Reciprocator diagram</image:caption>
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      <image:title>Compound Disc Spring Mechanism Explained: Stacking, Parts, Formula, and Uses</image:title>
      <image:caption>Compound Disc Spring diagram</image:caption>
    </image:image>
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      <image:caption>Conical Drum Variable Rotary Roller diagram</image:caption>
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    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/continuous-motion-ratchet.png?v=1777396007</image:loc>
      <image:title>Continuous Motion Ratchet: Three-Bevel-Gear Drive and Feed Calculator</image:title>
      <image:caption>Continuous Motion Ratchet diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/curious-padlock</loc>
    <lastmod>2026-10-04T20:41:51-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/curious-padlock.png?v=1777396010</image:loc>
      <image:title>Curious Padlock: Corkscrew Key, Spiral Keyway and Bolt Calculator</image:title>
      <image:caption>Curious Padlock diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/curvilinear-motion</loc>
    <lastmod>2026-10-04T20:51:13-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/curvilinear-motion.png?v=1777396014</image:loc>
      <image:title>Curvilinear Motion: Elliptical Path, Normal Acceleration and Force Calculator</image:title>
      <image:caption>Curvilinear Motion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/disk-and-pin-alternate-rectilinear</loc>
    <lastmod>2026-10-04T21:42:42-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/disk-and-pin-alternate-rectilinear.png?v=1777396017</image:loc>
      <image:title>Disk-and-pin Alternate Rectilinear Mechanism: How It Works, Parts, Diagram, and Uses Explained</image:title>
      <image:caption>Disk-and-pin Alternate Rectilinear diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/disk-and-pin-lever-vibration</loc>
    <lastmod>2026-10-04T21:43:47-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/disk-and-pin-lever-vibration.png?v=1777396020</image:loc>
      <image:title>Disk-and-pin Lever Vibration Mechanism: How It Works, Parts, Diagram, and Calculator</image:title>
      <image:caption>Disk-and-pin Lever Vibration diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/double-cam-motion</loc>
    <lastmod>2026-10-04T21:53:45-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/double-cam-motion.png?v=1777396023</image:loc>
      <image:title>Double Cam Motion: One Elliptical Cam and Perpendicular Follower Outputs</image:title>
      <image:caption>Double Cam Motion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/double-helico-volute-spring</loc>
    <lastmod>2026-10-04T21:59:43-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/double-helico-volute-spring.png?v=1777396026</image:loc>
      <image:title>Double Helico-volute Spring Mechanism: How It Works, Parts, Formula and Uses Explained</image:title>
      <image:caption>Double Helico-volute Spring diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/double-link-universal-joint</loc>
    <lastmod>2026-10-04T22:02:04-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/double-link-universal-joint.png?v=1777396029</image:loc>
      <image:title>Double Link Universal Joint Mechanism: How It Works, Diagram, Parts, Formula and Uses</image:title>
      <image:caption>Double Link Universal Joint diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/double-pawl-ratchet-wheel</loc>
    <lastmod>2026-10-04T22:03:50-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/double-pawl-ratchet-wheel.png?v=1777396032</image:loc>
      <image:title>Double-pawl Ratchet Wheel Mechanism: How It Works, Diagram, Parts, and Index Angle Calculator</image:title>
      <image:caption>Double-pawl Ratchet Wheel diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/double-screw-toggle-press</loc>
    <lastmod>2026-10-04T22:08:52-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/double-screw-toggle-press.png?v=1777396036</image:loc>
      <image:title>Double-screw Toggle Press Mechanism: How It Works, Diagram, Formula, and Uses Explained</image:title>
      <image:caption>Double-screw Toggle Press diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/drag-link-quick-return</loc>
    <lastmod>2026-10-04T22:19:50-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/drag-link-quick-return.png?v=1777396039</image:loc>
      <image:title>Drag-link Quick-return Mechanism: How It Works, Diagram, Parts, Time Ratio and Uses Explained</image:title>
      <image:caption>Drag-link Quick-return diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/egg-shaped-elliptical-movement</loc>
    <lastmod>2026-10-04T22:45:20-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/egg-shaped-elliptical-movement.png?v=1777396042</image:loc>
      <image:title>Egg-shaped Elliptical Movement Mechanism: How It Works, Diagram, Formula, and Uses Explained</image:title>
      <image:caption>Egg-shaped Elliptical Movement diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/elliptical-crank</loc>
    <lastmod>2026-10-04T23:10:29-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/elliptical-crank.png?v=1777396045</image:loc>
      <image:title>Elliptical Crank: Trammel Animation and Point-Velocity Calculator</image:title>
      <image:caption>Elliptical Crank diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/endless-rack-reciprocator</loc>
    <lastmod>2026-10-04T23:14:13-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/endless-rack-reciprocator.png?v=1777396049</image:loc>
      <image:title>Endless Rack Reciprocator Mechanism: How It Works, Parts, Formula and Uses Explained</image:title>
      <image:caption>Endless Rack Reciprocator diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/equalizing-tension-spring-and-lever</loc>
    <lastmod>2026-10-04T20:38:41-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/equalizing-tension-spring-and-lever.png?v=1777396052</image:loc>
      <image:title>Equalizing Tension Spring and Lever Mechanism: How It Works, Parts, Formula, and Uses Explained</image:title>
      <image:caption>Equalizing Tension Spring and Lever diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/equally-traversing-rollers-via-slotted-bar</loc>
    <lastmod>2026-10-04T23:28:23-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/equally-traversing-rollers-via-slotted-bar.png?v=1777396056</image:loc>
      <image:title>Equally Traversing Rollers: Slotted-Yoke Calculator | FIRGELLI</image:title>
      <image:caption>Equally-traversing Rollers via Slotted Bar diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/feed-motion-form</loc>
    <lastmod>2026-10-05T16:16:20-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/feed-motion-form.png?v=1777396060</image:loc>
      <image:title>Lead-Screw Feed Motion: Travel Speed Calculator | FIRGELLI</image:title>
      <image:caption>Feed Motion (form) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/ferris-wheel</loc>
    <lastmod>2026-10-06T17:22:15-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/ferris-wheel.png?v=1777396063</image:loc>
      <image:title>Ferris Wheel: Circumference and Rim-Speed Calculator | FIRGELLI</image:title>
      <image:caption>Ferris Wheel diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/flexible-angular-coupling</loc>
    <lastmod>2026-10-06T17:46:25-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/flexible-angular-coupling.png?v=1777396066</image:loc>
      <image:title>Flexible Angular Coupling: Misalignment Comparison | FIRGELLI</image:title>
      <image:caption>Flexible Angular Coupling diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/four-speed-change-gear</loc>
    <lastmod>2026-10-05T13:59:12-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/four-speed-change-gear.png?v=1777396070</image:loc>
      <image:title>Four-Speed Change Gear: Ratio, Speed and Torque Comparison | FIRGELLI</image:title>
      <image:caption>Four Speed Change Gear diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/four-bolt-cam</loc>
    <lastmod>2026-10-05T17:42:31-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/four-bolt-cam-mechanism.png?v=1791247350</image:loc>
      <image:title>Four-Bolt Cam Plate: Radial Motion and Interactive Animation</image:title>
      <image:caption>Four-Bolt Cam Plate — schematic of the mechanism.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/four-motion-feed</loc>
    <lastmod>2026-10-05T17:57:49-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/four-motion-feed.png?v=1777396076</image:loc>
      <image:title>Four-Motion Sewing Feed: Average Speed Calculator | FIRGELLI</image:title>
      <image:caption>Four-motion Feed diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/globe-gyroscope</loc>
    <lastmod>2026-10-03T17:14:18-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/globe-gyroscope.png?v=1777396079</image:loc>
      <image:title>Globe Gyroscope Mechanism: How It Works, Parts, Precession Diagram &amp; Calculator</image:title>
      <image:caption>Globe Gyroscope diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/grooved-cylinder-cam</loc>
    <lastmod>2026-10-06T18:14:31-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/grooved-cylinder-cam.png?v=1777396083</image:loc>
      <image:title>Grooved Cylinder Cam: Ideal Rise Calculator | FIRGELLI</image:title>
      <image:caption>Grooved Cylinder Cam diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/heart-shaped-groove</loc>
    <lastmod>2026-10-05T05:59:19-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/heart-shaped-groove.png?v=1777396086</image:loc>
      <image:title>Heart-Shaped Drum Groove: Ideal Traverse Calculator | FIRGELLI</image:title>
      <image:caption>Heart-shaped Groove diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/heddle-cam</loc>
    <lastmod>2026-10-06T03:02:09-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/heddle-cam.png?v=1777396089</image:loc>
      <image:title>Heddle Cam: Dwell-Time and Frame-Travel Calculator | FIRGELLI</image:title>
      <image:caption>Heddle Cam diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/hooke-s-angular-shaft-coupling</loc>
    <lastmod>2026-10-05T06:43:14-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/hooke-s-angular-shaft-coupling.png?v=1777396093</image:loc>
      <image:title>Hooke’s Angular Shaft Coupling: Ideal Speed Variation | FIRGELLI</image:title>
      <image:caption>Hooke&apos;s Angular Shaft Coupling diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/hydro-extractor</loc>
    <lastmod>2026-10-05T08:03:50-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/hydro-extractor.png?v=1777396096</image:loc>
      <image:title>Hydro-Extractor: Basket-Wall Speed and Acceleration Calculator | FIRGELLI</image:title>
      <image:caption>Hydro-extractor diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/intermittent-rotary-motion</loc>
    <lastmod>2026-10-05T08:49:37-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/intermittent-rotary-motion.png?v=1777396100</image:loc>
      <image:title>Intermittent Rotary Motion: Geneva and Carousel Pitch Calculator | FIRGELLI</image:title>
      <image:caption>Intermittent Rotary Motion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/intermittent-reciprocating-motion</loc>
    <lastmod>2026-10-05T08:48:08-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/intermittent-reciprocating-motion.png?v=1777396103</image:loc>
      <image:title>Intermittent Reciprocating Motion: Dwell Time Calculator | FIRGELLI</image:title>
      <image:caption>Intermittent Reciprocating Motion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/internal-multiple-cam</loc>
    <lastmod>2026-10-06T18:25:43-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/internal-multiple-cam.png?v=1777396107</image:loc>
      <image:title>Internal Multiple Cam: Dimension and Phase-Time Comparisons | FIRGELLI</image:title>
      <image:caption>Internal Multiple Cam diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/internal-rack-pinion-reciprocator</loc>
    <lastmod>2026-10-05T08:54:43-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/internal-rack-pinion-reciprocator.png?v=1777396110</image:loc>
      <image:title>Internal Rack Reciprocator: Pitch Speed and Nominal Rate Calculator | FIRGELLI</image:title>
      <image:caption>Internal Rack Pinion Reciprocator diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/irregular-cam-motion</loc>
    <lastmod>2026-10-05T09:14:34-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/irregular-cam-motion.png?v=1777396113</image:loc>
      <image:title>Irregular Cam Motion: Four-Phase Timing Calculator | FIRGELLI</image:title>
      <image:caption>Irregular Cam Motion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/irregular-vibrating-circular-motion</loc>
    <lastmod>2026-10-05T09:21:07-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/irregular-vibrating-circular-motion.png?v=1777396117</image:loc>
      <image:title>Irregular Vibrating Circular Motion: Eccentric-Force Calculator | FIRGELLI</image:title>
      <image:caption>Irregular Vibrating Circular Motion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/modified-variable-alternating-traverse</loc>
    <lastmod>2026-10-05T08:21:46-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/modified-variable-alternating-traverse.png?v=1777396120</image:loc>
      <image:title>Dual Crank-Wrist Spur-Gear Variable Traverse</image:title>
      <image:caption>Modified Variable Alternating Traverse diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/multiple-return-grooved-cylinder</loc>
    <lastmod>2026-10-05T08:46:16-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/multiple-return-grooved-cylinder.png?v=1777396123</image:loc>
      <image:title>Multiple-Return Grooved Cylinder: Travel and Cycle Calculator</image:title>
      <image:caption>Multiple Return Grooved Cylinder diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/mutilated-rack-alternate-rotary</loc>
    <lastmod>2026-10-05T08:56:55-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/mutilated-rack-alternate-rotary.png?v=1777396126</image:loc>
      <image:title>Mutilated Rack Frame: Alternate Spur-Gear Rotation</image:title>
      <image:caption>Mutilated Rack Alternate Rotary diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/needle-bar-slot-cam</loc>
    <lastmod>2026-10-05T09:03:40-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/needle-bar-slot-cam.png?v=1777396129</image:loc>
      <image:title>Needle-Bar Slot Cam: Rotating Groove With Shuttle Dwell</image:title>
      <image:caption>Needle-bar Slot Cam diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/oblique-disc-motion</loc>
    <lastmod>2026-10-05T09:12:03-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/oblique-disc-motion.png?v=1777396132</image:loc>
      <image:title>Oblique Disc Motion: Hiscox Rod-and-Roller Mechanism</image:title>
      <image:caption>Oblique Disc Motion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/oblique-rollers-form</loc>
    <lastmod>2026-10-05T09:13:57-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/oblique-rollers-form.png?v=1777396136</image:loc>
      <image:title>Oblique Rollers: Ideal Sheet-to-Guide Kinematics</image:title>
      <image:caption>Oblique Rollers (form) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/oscillating-motion</loc>
    <lastmod>2026-10-05T09:40:05-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/oscillating-motion.png?v=1777396139</image:loc>
      <image:title>Ideal Simple Harmonic Motion: Circular Projection</image:title>
      <image:caption>Oscillating Motion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/ovoid-curve</loc>
    <lastmod>2026-10-05T09:48:58-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/ovoid-curve.png?v=1777396142</image:loc>
      <image:title>Ovoid Curve: Declared Convex Limacon Geometry</image:title>
      <image:caption>Ovoid Curve diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/pair-of-toe-levers</loc>
    <lastmod>2026-10-05T09:52:15-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/pair-of-toe-levers.png?v=1777396146</image:loc>
      <image:title>Bell-Crank Toe Levers: Declared Contact Layout</image:title>
      <image:caption>Pair of Toe Levers diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/pivoted-follower</loc>
    <lastmod>2026-10-04T08:42:54-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/pivoted-follower.png?v=1777396149</image:loc>
      <image:title>Pivoted Follower: Exact Declared Chord-Lift Geometry</image:title>
      <image:caption>Pivoted Follower diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/positive-shuttle-motion</loc>
    <lastmod>2026-10-04T12:04:55-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/positive-shuttle-motion.png?v=1777396152</image:loc>
      <image:title>Positive Shuttle Motion: Valid Closed-Groove Cam Schedule</image:title>
      <image:caption>Positive Shuttle Motion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/power-escapement</loc>
    <lastmod>2026-10-04T12:30:02-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/power-escapement.png?v=1777396155</image:loc>
      <image:title>Power Escapement: One-Tooth Lock–Release–Relock Schedule</image:title>
      <image:caption>Power Escapement diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/quadrangular-rectilinear-motion</loc>
    <lastmod>2026-10-04T15:32:29-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/quadrangular-rectilinear-motion.png?v=1777396159</image:loc>
      <image:title>Chebyshev Approximate Straight-Line Linkage: Exact Four-Bar Closure</image:title>
      <image:caption>Quadrangular Rectilinear Motion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/ratchet-lift</loc>
    <lastmod>2026-10-04T21:46:42-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/ratchet-lift.png?v=1777396162</image:loc>
      <image:title>Ratchet Lift Mechanism Explained: How It Works, Diagram, Parts, Formula and Uses</image:title>
      <image:caption>Ratchet Lift diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/ratchet-governor</loc>
    <lastmod>2026-10-04T20:18:01-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/ratchet-governor.png?v=1777396166</image:loc>
      <image:title>Ratchet Governor Mechanism: How It Works, Diagram, Parts, Trip RPM Formula and Uses</image:title>
      <image:caption>Ratchet Governor diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/ratchet-head</loc>
    <lastmod>2026-10-02T17:24:16-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/ratchet-head.png?v=1777396169</image:loc>
      <image:title>Ratchet Head Mechanism: How It Works, Pawl and Tooth Geometry, Parts, and Uses Explained</image:title>
      <image:caption>Ratchet Head diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/reciprocal-circular-motion</loc>
    <lastmod>2026-10-04T22:14:35-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/reciprocal-circular-motion.png?v=1777396172</image:loc>
      <image:title>Reciprocal Circular Motion Mechanism Explained: How It Works, Parts, Formula and Uses</image:title>
      <image:caption>Reciprocal Circular Motion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/reciprocating-feed-ratchet</loc>
    <lastmod>2026-10-04T22:34:25-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/reciprocating-feed-ratchet.png?v=1777396176</image:loc>
      <image:title>Reciprocating Feed Ratchet Mechanism: How It Works, Parts, Diagram, and Industrial Uses</image:title>
      <image:caption>Reciprocating Feed Ratchet diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/rectilinear-motion</loc>
    <lastmod>2026-10-05T02:30:17-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/rectilinear-motion.png?v=1777396179</image:loc>
      <image:title>Combined Rectilinear and Rotary Motion: Shaft Transmission Calculator</image:title>
      <image:caption>Rectilinear Motion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/rocking-arm</loc>
    <lastmod>2026-10-04T17:42:09-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/rocking-arm.png?v=1777396182</image:loc>
      <image:title>Rocking Arm Mechanism Explained: How a Crank-Rocker Four-Bar Linkage Converts Rotation to Oscillation</image:title>
      <image:caption>Rocking Arm diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/rocking-motion</loc>
    <lastmod>2026-10-04T17:42:10-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/rocking-motion.png?v=1777396185</image:loc>
      <image:title>Rocking Motion Mechanism Explained: Crank-Rocker Four-Bar Linkage, Parts, Formula &amp; Uses</image:title>
      <image:caption>Rocking Motion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/rotary-and-longitudinal-motion</loc>
    <lastmod>2026-10-04T17:42:40-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/rotary-and-longitudinal-motion.png?v=1777396188</image:loc>
      <image:title>Rotary and Longitudinal Motion: How It Works, Mechanisms, Formulas, and Real-World Uses Explained</image:title>
      <image:caption>Rotary and Longitudinal Motion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/single-toggle-arm-letter-press</loc>
    <lastmod>2026-10-07T12:08:18-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/single-toggle-arm-letter-press.png?v=1777396191</image:loc>
      <image:title>Single Toggle Arm Letter-press Mechanism: How It Works, Diagram, Parts, Formula and Uses Explained</image:title>
      <image:caption>Single Toggle Arm Letter-press diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/single-volute-helix-spring</loc>
    <lastmod>2026-10-07T12:19:46-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/single-volute-helix-spring.png?v=1777396195</image:loc>
      <image:title>Single Volute Helix Spring Mechanism Explained: How It Works, Diagram, Parts, Uses and Formula</image:title>
      <image:caption>Single Volute Helix Spring diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/six-radial-grooved-trammel</loc>
    <lastmod>2026-10-07T12:38:34-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/six-radial-grooved-trammel.png?v=1777396198</image:loc>
      <image:title>Six Radial Grooved Trammel Mechanism Explained: How It Works, Parts, Formula and Uses</image:title>
      <image:caption>Six Radial Grooved Trammel diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/slider-crank-reversing</loc>
    <lastmod>2026-10-04T17:51:03-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/slider-crank-reversing.png?v=1777396201</image:loc>
      <image:title>Slider-crank Reversing Mechanism: How It Works, Diagram, Parts, Formula and Uses Explained</image:title>
      <image:caption>Slider-crank Reversing diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/slotted-vibrating-bar-to-horizontal-bar</loc>
    <lastmod>2026-10-07T17:07:35-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/slotted-vibrating-bar-to-horizontal-bar.png?v=1777396205</image:loc>
      <image:title>Slotted Vibrating Bar to Horizontal Bar Mechanism: How It Works, Diagram, Parts, and Uses</image:title>
      <image:caption>Slotted Vibrating Bar to Horizontal Bar diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/scotch-yoke</loc>
    <lastmod>2026-10-04T17:46:54-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/scotch-yoke.png?v=1777396208</image:loc>
      <image:title>Scotch Yoke Mechanism: How It Works, Diagram, Formula, Calculator and Uses</image:title>
      <image:caption>Scotch Yoke diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/slotted-arm-rectilinear-variable</loc>
    <lastmod>2026-10-04T17:44:47-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/slotted-arm-rectilinear-variable.png?v=1777396211</image:loc>
      <image:title>Slotted-arm Rectilinear Variable Mechanism: How It Works, Diagram, Parts and Uses Explained</image:title>
      <image:caption>Slotted-arm Rectilinear Variable diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/spiral-grooved-face-plate</loc>
    <lastmod>2026-10-04T17:48:32-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/spiral-grooved-face-plate.png?v=1777396214</image:loc>
      <image:title>Spiral-grooved Face Plate Mechanism Explained: How It Works, Parts, Diagram, and Uses in Scroll Chucks</image:title>
      <image:caption>Spiral-grooved Face Plate diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/spring-lathe-wheel-crank</loc>
    <lastmod>2026-10-04T17:48:44-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/spring-lathe-wheel-crank.png?v=1777396218</image:loc>
      <image:title>Spring Lathe-wheel Crank Mechanism Explained: How It Works, Parts, Diagram &amp; Formula</image:title>
      <image:caption>Spring Lathe-wheel Crank diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/stop-motion</loc>
    <lastmod>2026-10-04T23:23:13-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/stop-motion.png?v=1777396221</image:loc>
      <image:title>Stop Motion Mechanism: How It Works, Diagram, Parts &amp; Uses in Textile Looms</image:title>
      <image:caption>Stop Motion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/stops-of-various-forms</loc>
    <lastmod>2026-10-05T07:48:42-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/stops-of-various-forms.png?v=1777396224</image:loc>
      <image:title>Stops of Various Forms: Three Ratchet Pawls and Pitch Calculator</image:title>
      <image:caption>Stops of Various Forms diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/tension-helico-volute-spring</loc>
    <lastmod>2026-10-05T07:50:05-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/tension-helico-volute-spring.png?v=1777396227</image:loc>
      <image:title>Helico-volute Spring: Ideal Active-coil Count Comparison</image:title>
      <image:caption>Tension Helico-volute Spring diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/toggle-joint-cam-movement</loc>
    <lastmod>2026-10-05T07:51:06-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/toggle-joint-cam-movement.png?v=1777396230</image:loc>
      <image:title>Toggle-joint Cam Movement: Ideal Symmetric-link Force Calculator</image:title>
      <image:caption>Toggle-joint Cam Movement diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/traverse-bar</loc>
    <lastmod>2026-10-05T07:51:44-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/traverse-bar.png?v=1777396234</image:loc>
      <image:title>Traverse Bar: Reversing-groove Motion and Timing</image:title>
      <image:caption>Traverse Bar diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/uniform-reciprocating-motion</loc>
    <lastmod>2026-10-05T07:52:59-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/uniform-reciprocating-motion.png?v=1777396237</image:loc>
      <image:title>Reciprocating Motion: Whitworth-type Quick-return Timing Comparison</image:title>
      <image:caption>Uniform Reciprocating Motion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/universal-angle-coupling</loc>
    <lastmod>2026-10-05T07:53:05-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/universal-angle-coupling.png?v=1777396240</image:loc>
      <image:title>Single Cardan Joint: Ideal Instantaneous Speed-ratio Calculator</image:title>
      <image:caption>Universal Angle Coupling diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/variable-adjustment</loc>
    <lastmod>2026-10-05T07:53:30-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/variable-adjustment.png?v=1777396243</image:loc>
      <image:title>Adjustable Crank Throw: Ideal Slider Stroke Calculator</image:title>
      <image:caption>Variable Adjustment diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/variable-crank-motion</loc>
    <lastmod>2026-10-05T07:53:39-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/variable-crank-motion.png?v=1777396247</image:loc>
      <image:title>Variable Crank Motion: Compare Two Ideal Slider Strokes</image:title>
      <image:caption>Variable Crank Motion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/variable-crank-throw</loc>
    <lastmod>2026-10-05T07:53:40-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/variable-crank-throw.png?v=1777396250</image:loc>
      <image:title>Variable Crank Throw: Ideal Stroke and Screw Adjustment</image:title>
      <image:caption>Variable Crank Throw diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/variable-power-vibrating-movement</loc>
    <lastmod>2026-10-05T07:53:46-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/variable-power-vibrating-movement.png?v=1777396253</image:loc>
      <image:title>Variable Vibratory Resultant: Equal-vector Phase Calculator</image:title>
      <image:caption>Variable Power Vibrating Movement diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/variable-radius-lever</loc>
    <lastmod>2026-10-05T07:53:48-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/variable-radius-lever.png?v=1777396256</image:loc>
      <image:title>Variable-radius Lever: Ideal Arm-length Calculator</image:title>
      <image:caption>Variable Radius Lever diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/vibrating-toothed-wheel</loc>
    <lastmod>2026-10-05T07:54:33-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/vibrating-toothed-wheel.png?v=1777396259</image:loc>
      <image:title>Vibrating Toothed Wheel: Escapement Animation and Frequency Calculator</image:title>
      <image:caption>Vibrating Toothed Wheel diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/wave-motions</loc>
    <lastmod>2026-10-05T07:55:32-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/wave-motions.png?v=1777396262</image:loc>
      <image:title>Wave Motions: Wavelength, Period and Transit-time Calculator</image:title>
      <image:caption>Wave Motions diagram</image:caption>
    </image:image>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/windlass-grip-pawl.png?v=1777396266</image:loc>
      <image:title>Windlass Grip Pawl: Signed Force and Moment Comparison</image:title>
      <image:caption>Windlass Grip Pawl diagram</image:caption>
    </image:image>
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    <loc>https://www.firgelliauto.com/blogs/mechanisms/yoke-strap</loc>
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      <image:title>Yoke Strap Mechanism Explained: How It Works, Diagram, Parts, Formula, and Marine Rigging Uses</image:title>
      <image:caption>Yoke Strap diagram</image:caption>
    </image:image>
  </url>
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    <loc>https://www.firgelliauto.com/blogs/mechanisms/acetylene-bicycle-lamp</loc>
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      <image:title>Acetylene Bicycle Lamp Mechanism: How Carbide Lamps Work, Parts, Drip-Feed Diagram</image:title>
      <image:caption>Acetylene Bicycle Lamp diagram</image:caption>
    </image:image>
  </url>
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    <loc>https://www.firgelliauto.com/blogs/mechanisms/air-ship</loc>
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      <image:title>Air Ship Mechanism Explained: How Airships Generate Lift, Key Parts, Diagram and Uses</image:title>
      <image:caption>Air Ship diagram</image:caption>
    </image:image>
  </url>
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    <loc>https://www.firgelliauto.com/blogs/mechanisms/application-of-trace-springs</loc>
    <lastmod>2026-10-05T08:21:08-07:00</lastmod>
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      <image:title>Application of Trace Springs: Animation and Normalized Force Comparison</image:title>
      <image:caption>Application of Trace Springs diagram</image:caption>
    </image:image>
  </url>
  <url>
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      <image:title>Automobile Horn Mechanism Explained: How It Works, Parts, Diagram and Frequency Formula</image:title>
      <image:caption>Automobile Horn diagram</image:caption>
    </image:image>
  </url>
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    <loc>https://www.firgelliauto.com/blogs/mechanisms/baby-carrier-tricycle</loc>
    <lastmod>2026-10-05T09:44:42-07:00</lastmod>
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      <image:title>Baby-carrier Tricycle: Support Triangle and Height Comparison</image:title>
      <image:caption>Baby-carrier Tricycle diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/ball-bearing-problem</loc>
    <lastmod>2026-10-04T21:46:19-07:00</lastmod>
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      <image:title>Ball-bearing Problem: Contact Forces, Diagram and Calculator</image:title>
      <image:caption>Ball-bearing Problem diagram</image:caption>
    </image:image>
  </url>
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      <image:title>Bark (Barque) Sailing Rig: Diagram &amp; Sail Area Calculator</image:title>
      <image:caption>Bark diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/barkentine</loc>
    <lastmod>2026-09-28T21:59:03-07:00</lastmod>
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      <image:title>Barkentine Sail Plan Mechanism: How a Three-Mast Square-and-Fore-Aft Rig Works</image:title>
      <image:caption>Barkentine diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/bicycle-gear</loc>
    <lastmod>2026-10-04T19:54:44-07:00</lastmod>
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      <image:title>Bicycle Gear Mechanism Explained: Drivetrain Parts, Gear Ratio Formula, Diagram and Calculator</image:title>
      <image:caption>Bicycle Gear diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/bicycle-lamp</loc>
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      <image:title>Bicycle Lamp Mechanism: How It Works, Beam Optics, Parts and Lux-to-Reach Calculator</image:title>
      <image:caption>Bicycle Lamp diagram</image:caption>
    </image:image>
  </url>
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    <loc>https://www.firgelliauto.com/blogs/mechanisms/blackwall-tackle-hitch</loc>
    <lastmod>2026-10-04T19:50:42-07:00</lastmod>
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      <image:title>Blackwall Tackle Hitch Mechanism Explained: How It Works, Parts, Formula, and Uses</image:title>
      <image:caption>Blackwall Tackle Hitch diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/boat-detaching-hook</loc>
    <lastmod>2026-10-04T21:51:02-07:00</lastmod>
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      <image:title>Boat-detaching Hook: Historical Mechanism and Lever Calculator</image:title>
      <image:caption>Boat-detaching Hook diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/bowline-knot</loc>
    <lastmod>2026-10-04T21:58:09-07:00</lastmod>
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      <image:title>Bowline Knot Mechanism Explained: Parts, Diagram, Strength Formula, and Real-World Uses</image:title>
      <image:caption>Bowline Knot diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/brigantine</loc>
    <lastmod>2026-10-04T22:04:30-07:00</lastmod>
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      <image:title>Brigantine Sailing Rig Explained: How the Two-Masted Square and Fore-and-Aft Mechanism Works</image:title>
      <image:caption>Brigantine diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/cable-grip-for-street-railways</loc>
    <lastmod>2026-10-04T22:11:10-07:00</lastmod>
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      <image:title>Cable Grip for Street Railways: How the Mechanism Works, Parts, Diagram and Uses Explained</image:title>
      <image:caption>Cable Grip for Street Railways diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/cable-railway-grip</loc>
    <lastmod>2026-10-04T22:12:37-07:00</lastmod>
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      <image:title>Cable Railway Grip Mechanism: How the Friction Grip, Dies, and Haul Rope Move a Cable Car</image:title>
      <image:caption>Cable Railway Grip diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/street-car-truck</loc>
    <lastmod>2026-10-05T07:48:56-07:00</lastmod>
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      <image:title>Streetcar Truck: Pivot-Angle and Static-Load Calculator | FIRGELLI</image:title>
      <image:caption>Street-car Truck diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/carrick-bend</loc>
    <lastmod>2026-10-04T20:49:48-07:00</lastmod>
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      <image:title>Carrick Bend Knot Mechanism: How It Works, Diagram, Parts, Uses, and Strength Formula</image:title>
      <image:caption>Carrick Bend diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/chain-stop</loc>
    <lastmod>2026-10-04T20:51:40-07:00</lastmod>
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      <image:title>Chain Stop Mechanism Explained: How It Works, Force Diagram, Parts and Uses</image:title>
      <image:caption>Chain Stop diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/clove-hitch</loc>
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      <image:title>Clove Hitch Mechanism Explained: How It Works, Parts, Capstan Formula, Uses &amp; Diagram</image:title>
      <image:caption>Clove Hitch diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/club-topsail-rig</loc>
    <lastmod>2026-10-04T21:30:19-07:00</lastmod>
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      <image:title>Club Topsail Rig Mechanism Explained: Parts, Diagram, Sail Area Formula and Worked Example</image:title>
      <image:caption>Club Topsail Rig diagram</image:caption>
    </image:image>
  </url>
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    <loc>https://www.firgelliauto.com/blogs/mechanisms/variable-pitch-propeller</loc>
    <lastmod>2026-10-05T07:53:45-07:00</lastmod>
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      <image:title>Variable-pitch Propeller: Blade-angle Interpolation</image:title>
      <image:caption>Variable Pitch Propeller diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/deep-sea-sounding-ball</loc>
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      <image:title>Deep-sea Sounding Ball Mechanism Explained: How Brooke&apos;s 1854 Detachable Trigger Works</image:title>
      <image:caption>Deep-sea Sounding Ball diagram</image:caption>
    </image:image>
  </url>
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      <image:title>Detachable Link Chain Mechanism: How the Hook-and-Bar Joint Works, Parts, Uses &amp; Formula</image:title>
      <image:caption>Detachable Link Chain diagram</image:caption>
    </image:image>
  </url>
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    <loc>https://www.firgelliauto.com/blogs/mechanisms/double-knot</loc>
    <lastmod>2026-10-04T22:00:56-07:00</lastmod>
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      <image:title>Double Knot: Loose Double-overhand Diagram and Rope-length Calculator</image:title>
      <image:caption>Double Knot diagram</image:caption>
    </image:image>
  </url>
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    <lastmod>2026-10-04T22:49:49-07:00</lastmod>
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      <image:caption>Elastic Wheel diagram</image:caption>
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      <image:title>Electric Brougham: Internal Wheel Gears and Battery Voltage Calculator</image:title>
      <image:caption>Electric Brougham diagram</image:caption>
    </image:image>
  </url>
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      <image:title>Electric Phaeton: Internal Wheel Gears and Road-Speed Calculator</image:title>
      <image:caption>Electric Phaeton diagram</image:caption>
    </image:image>
  </url>
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      <image:title>Electric Tricycle: Layout Animation and Battery-Current Calculator</image:title>
      <image:caption>Electric Tricycle diagram</image:caption>
    </image:image>
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      <image:title>Endless Cable Grip Car Mechanism: How the Grip Jaw, Haulage Rope, and Lever Linkage Work</image:title>
      <image:caption>Endless Cable Grip Car diagram</image:caption>
    </image:image>
  </url>
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      <image:caption>Feathering Paddle Wheel diagram</image:caption>
    </image:image>
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      <image:title>Figure-Eight Knot: Forms and Assumed Strength Comparison | FIRGELLI</image:title>
      <image:caption>Figure Eight Knot diagram</image:caption>
    </image:image>
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      <image:title>Fisherman’s Bend: Assumed Rope-Strength Comparison | FIRGELLI</image:title>
      <image:caption>Fisherman&apos;s Bend Hitch diagram</image:caption>
    </image:image>
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      <image:title>Floating Lighthouse: Light Range and Mooring Geometry | FIRGELLI</image:title>
      <image:caption>Floating Lighthouse diagram</image:caption>
    </image:image>
  </url>
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      <image:title>Freight Locomotive: Wheel–Rail Adhesion Calculator | FIRGELLI</image:title>
      <image:caption>Freight Locomotive diagram</image:caption>
    </image:image>
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      <image:title>Freight-Car Truck: Static Wheel and Axle Loads | FIRGELLI</image:title>
      <image:caption>Freight-car Truck diagram</image:caption>
    </image:image>
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      <image:title>Full Schooner Rig: Sail-force Projection Calculator | FIRGELLI</image:title>
      <image:caption>Full Schooner Rig diagram</image:caption>
    </image:image>
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    <lastmod>2026-10-05T20:46:32-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/full-rigged-brig-mechanism.png?v=1791258391</image:loc>
      <image:title>Full-rigged Brig: Sail Plan and Yaw Moments</image:title>
      <image:caption>Full-rigged Brig — schematic of the mechanism.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/full-rigged-ship</loc>
    <lastmod>2026-10-05T20:53:31-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/full-rigged-ship-mechanism.png?v=1791258810</image:loc>
      <image:title>Full-rigged Ship: Yard Bracing and Geometry</image:title>
      <image:caption>Full-rigged Ship — schematic of the mechanism.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/half-hitch</loc>
    <lastmod>2026-10-06T05:26:34-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/half-hitch.png?v=1777396462</image:loc>
      <image:title>Half Hitch: Rope Strength Assumptions Calculator | FIRGELLI</image:title>
      <image:caption>Half Hitch diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/haven-s-planetary-crank-gear</loc>
    <lastmod>2026-10-06T06:43:08-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/haven-s-planetary-crank-gear-mechanism.png?v=1791294187</image:loc>
      <image:title>Haven’s Planetary Crank Gear: Slotted-Cross Animation and Calculator</image:title>
      <image:caption>Haven’s Planetary Crank Gear — schematic of the mechanism.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/hermaphrodite-brig</loc>
    <lastmod>2026-10-05T06:18:01-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/hermaphrodite-brig.png?v=1777396485</image:loc>
      <image:title>Hermaphrodite Brig: Sail-Area Coordinate Calculator | FIRGELLI</image:title>
      <image:caption>Hermaphrodite Brig diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/ice-boat</loc>
    <lastmod>2026-10-05T08:19:22-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/ice-boat.png?v=1777396504</image:loc>
      <image:title>Ice Boat: Perpendicular Apparent-Wind Calculator | FIRGELLI</image:title>
      <image:caption>Ice Boat diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/jacketless-gasoline-carriage-motor</loc>
    <lastmod>2026-10-06T18:46:24-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/jacketless-gasoline-carriage-motor.png?v=1777396516</image:loc>
      <image:title>Jacketless Carriage Motor: Illustrative Fin-Cooling Calculator | FIRGELLI</image:title>
      <image:caption>Jacketless Gasoline Carriage Motor diagram</image:caption>
    </image:image>
  </url>
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    <loc>https://www.firgelliauto.com/blogs/mechanisms/jib-topsail-sloop</loc>
    <lastmod>2026-10-06T18:51:53-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/jib-topsail-sloop.png?v=1777396526</image:loc>
      <image:title>Jib Topsail Sloop: Idealized Sail-Force Component Calculator | FIRGELLI</image:title>
      <image:caption>Jib Topsail Sloop diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/lateen-rig</loc>
    <lastmod>2026-10-06T21:35:41-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/lateen-rig.png?v=1777396543</image:loc>
      <image:title>Lateen Rig Mechanism Explained: How the Triangular Sail Works, Parts, Geometry &amp; Uses</image:title>
      <image:caption>Lateen Rig diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/light-electric-carriage</loc>
    <lastmod>2026-10-04T23:46:54-07:00</lastmod>
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      <image:title>Light Electric Carriage: Grade-Force and Climbing-Power Calculator</image:title>
      <image:caption>Light Electric Carriage diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/modern-locomotive-and-tender</loc>
    <lastmod>2026-10-05T00:56:56-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/modern-locomotive-and-tender.png?v=1777396583</image:loc>
      <image:title>Steam Locomotive–Tender Drawbar: Articulation Geometry</image:title>
      <image:caption>Modern Locomotive and Tender diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/newport-cat-boat</loc>
    <lastmod>2026-10-05T09:05:22-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/newport-cat-boat.png?v=1777396594</image:loc>
      <image:title>Newport Cat-Boat: Gaff Rig and Declared Longitudinal Centres</image:title>
      <image:caption>Newport Cat-boat diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/novel-steering-gear</loc>
    <lastmod>2026-10-05T09:09:49-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/novel-steering-gear.png?v=1777396607</image:loc>
      <image:title>Novel Steering Gear: Hiscox Meteor Yacht Screw Linkage</image:title>
      <image:caption>Novel Steering Gear diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/outward-thrust-propeller-wheel</loc>
    <lastmod>2026-10-05T09:43:30-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/outward-thrust-propeller-wheel.png?v=1777396618</image:loc>
      <image:title>Radial Paddle Wheel: Declared Immersion Geometry</image:title>
      <image:caption>Outward Thrust Propeller Wheel diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/overhand-knot</loc>
    <lastmod>2026-10-05T09:45:07-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/overhand-knot.png?v=1777396630</image:loc>
      <image:title>Overhand Knot: Declared Loose-Diagram Geometry</image:title>
      <image:caption>Overhand Knot diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/passenger-locomotive-eight-wheel-model</loc>
    <lastmod>2026-10-05T10:07:04-07:00</lastmod>
    <changefreq>weekly</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/passenger-locomotive-eight-wheel-model.png?v=1777396641</image:loc>
      <image:title>Passenger Locomotive Eight-Wheeler: 4-4-0 Rolling Layout</image:title>
      <image:caption>Passenger Locomotive Eight-wheel Model diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/railroad-gates</loc>
    <lastmod>2026-10-04T16:45:02-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/railroad-gates.png?v=1777396668</image:loc>
      <image:title>Railroad Gates: Declared Constant-Speed Timing Ledger</image:title>
      <image:caption>Railroad Gates diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/railway-pneumatic-signal</loc>
    <lastmod>2026-10-02T15:19:56-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/railway-pneumatic-signal.png?v=1777396679</image:loc>
      <image:title>Railway Pneumatic Signal Mechanism: How It Works, Parts, Diagram and Uses Explained</image:title>
      <image:caption>Railway Pneumatic Signal diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/reversible-road-roller</loc>
    <lastmod>2026-10-05T05:44:49-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/reversible-road-roller.png?v=1777396690</image:loc>
      <image:title>Reversible Road Roller: Hydrostatic Direction and Speed Calculator</image:title>
      <image:caption>Reversible Road Roller diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/reversing-screw-propeller</loc>
    <lastmod>2026-10-05T07:07:47-07:00</lastmod>
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      <image:title>Reversing Screw Propeller Mechanism: How It Works, Parts, Pitch Diagram and Marine Uses Explained</image:title>
      <image:caption>Reversing Screw Propeller diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/road-builders-level</loc>
    <lastmod>2026-10-04T17:42:01-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/road-builders-level.png?v=1777396720</image:loc>
      <image:title>Road Builders&apos; Level Mechanism Explained: How It Works, Parts, Diagram &amp; Surveying Uses</image:title>
      <image:caption>Road Builders&apos; Level diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/road-machine</loc>
    <lastmod>2026-10-04T17:42:03-07:00</lastmod>
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      <image:title>Road Machine Mechanism Explained: How Asphalt Pavers, Graders, and Milling Machines Work</image:title>
      <image:caption>Road Machine diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/road-roller</loc>
    <lastmod>2026-10-04T17:42:04-07:00</lastmod>
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      <image:title>Road Roller Mechanism Explained: How Vibratory Compaction Works, Parts, Formula and Uses</image:title>
      <image:caption>Road Roller diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/rope-knots-and-hitches</loc>
    <lastmod>2026-10-04T17:42:33-07:00</lastmod>
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      <image:title>Rope Knots and Hitches Explained: How They Work, Key Parts, Knot Efficiency and Working Load Limits</image:title>
      <image:caption>Rope Knots and Hitches diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/round-turn-and-half-hitch</loc>
    <lastmod>2026-10-04T17:42:55-07:00</lastmod>
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      <image:title>Round Turn and Half Hitch: Mechanism, Capstan Formula, Parts, and Mooring Uses Explained</image:title>
      <image:caption>Round Turn and Half Hitch diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/sampler-sounding-weight</loc>
    <lastmod>2026-10-06T16:12:39-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/sampler-sounding-weight.png?v=1777396777</image:loc>
      <image:title>Sampler Sounding Weight Mechanism Explained: Parts, Diagram, Formula and Hydrographic Survey Uses</image:title>
      <image:caption>Sampler Sounding Weight diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/screw-propeller</loc>
    <lastmod>2026-10-04T17:47:02-07:00</lastmod>
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      <image:title>Screw Propeller Mechanism: How It Works, Parts, Diagram, Formula and Marine Uses Explained</image:title>
      <image:caption>Screw Propeller diagram</image:caption>
    </image:image>
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    <loc>https://www.firgelliauto.com/blogs/mechanisms/self-registering-tide-gauge</loc>
    <lastmod>2026-10-04T17:47:26-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/self-registering-tide-gauge.png?v=1777396815</image:loc>
      <image:title>Self-registering Tide Gauge: How It Works, Stilling Well Diagram, Parts, Uses &amp; Orifice Calculator</image:title>
      <image:caption>Self-registering Tide Gauge diagram</image:caption>
    </image:image>
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    <loc>https://www.firgelliauto.com/blogs/mechanisms/serpollet-s-steam-tricycle</loc>
    <lastmod>2026-10-04T17:47:36-07:00</lastmod>
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      <image:title>Serpollet&apos;s Steam Tricycle Mechanism: How the 1887 Flash Boiler Steam Vehicle Works</image:title>
      <image:caption>Serpollet&apos;s Steam Tricycle diagram</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-10-04T18:29:59-07:00</lastmod>
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      <image:title>Sheet Bend Knot Mechanism Explained: How It Works, Diagram, Parts, Uses &amp; Load Formula</image:title>
      <image:caption>Sheet Bend diagram</image:caption>
    </image:image>
  </url>
  <url>
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      <image:title>Sheet Bend and Toggle Mechanism: How It Works, Diagram, Parts, Uses and Safe Load Formula</image:title>
      <image:caption>Sheet Bend and Toggle diagram</image:caption>
    </image:image>
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      <image:title>Silver&apos;s Marine Governor Mechanism Explained: Parts, Diagram, and How It Controls Marine Steam Engines</image:title>
      <image:caption>Silver&apos;s Marine Governor diagram</image:caption>
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      <image:title>Single-Cylinder Locomotive: Centre-Crank Animation and Leverage Calculator</image:title>
      <image:caption>Single-cylinder Locomotive diagram</image:caption>
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      <image:title>Skiff Yawl Rig Explained: How It Works, Parts, Sail Balance Formula and Diagram</image:title>
      <image:caption>Skiff Yawl Rig diagram</image:caption>
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      <image:title>Skip Jack Mechanism Explained: How the Ratchet and Pawl Lifting Jack Works, Parts and Uses</image:title>
      <image:caption>Skip Jack diagram</image:caption>
    </image:image>
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      <image:title>Sliding Gunter Rig Mechanism: How It Works, Parts, Formula, and Uses Explained</image:title>
      <image:caption>Sliding Gunter diagram</image:caption>
    </image:image>
  </url>
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    <lastmod>2026-10-04T17:51:08-07:00</lastmod>
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      <image:title>Slip Knot Mechanism Explained: How It Works, Parts, Uses, and Quick-Release Diagram</image:title>
      <image:caption>Slip Knot diagram</image:caption>
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    <lastmod>2026-10-07T13:28:19-07:00</lastmod>
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      <image:title>Sloop Rig: Mainsail, Jib and Forestay Calculator</image:title>
      <image:caption>Sloop diagram</image:caption>
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      <image:title>Sloop Yawl Rig and Selected Balance Calculator</image:title>
      <image:caption>Sloop Yawl diagram</image:caption>
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  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/sounding-weight-release</loc>
    <lastmod>2026-10-04T17:48:20-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/sounding-weight-release.png?v=1777396973</image:loc>
      <image:title>Sounding-weight Release Mechanism: How It Works, Parts, Diagram, and Deep-Sea Sounding Uses</image:title>
      <image:caption>Sounding-weight Release diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/split-lug-or-square-sail</loc>
    <lastmod>2026-10-04T17:48:35-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/split-lug-or-square-sail.png?v=1777396984</image:loc>
      <image:title>Split Lug or Square Sail: Mechanism, Sling Point Diagram, and Rig Parts Explained</image:title>
      <image:caption>Split Lug or Square Sail diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/spring-wheel</loc>
    <lastmod>2026-10-04T17:48:48-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/spring-wheel.png?v=1777396994</image:loc>
      <image:title>Spring Wheel Mechanism: How It Works, Diagram, Parts, Uses &amp; Calculator Explained</image:title>
      <image:caption>Spring Wheel diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/square-or-lug-sail</loc>
    <lastmod>2026-10-04T17:48:56-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/square-or-lug-sail.png?v=1777397008</image:loc>
      <image:title>Square or Lug Sail Mechanism: How It Works, Parts, Diagram and Sailing Uses Explained</image:title>
      <image:caption>Square or Lug Sail diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/square-or-reef-knot</loc>
    <lastmod>2026-10-04T17:48:57-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/square-or-reef-knot.png?v=1777397019</image:loc>
      <image:title>Square or Reef Knot Mechanism: How It Works, Diagram, Parts, Uses and Strength Formula Explained</image:title>
      <image:caption>Square or Reef Knot diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/stone-dry-dock</loc>
    <lastmod>2026-10-05T07:48:33-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/stone-dry-dock.png?v=1777397046</image:loc>
      <image:title>Stone Dry Dock: Animation and Pump-Rate Calculator | FIRGELLI</image:title>
      <image:caption>Stone Dry-dock diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/street-cleaning-machine</loc>
    <lastmod>2026-10-05T07:48:48-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/street-cleaning-machine.png?v=1777397057</image:loc>
      <image:title>Street Cleaning Machine: Sweeper Route Coverage Calculator</image:title>
      <image:caption>Street Cleaning Machine diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/street-railway-sweeping-car</loc>
    <lastmod>2026-10-05T07:48:53-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/street-railway-sweeping-car.png?v=1777397068</image:loc>
      <image:title>Street Railway Sweeping Car: Paired-brush Motion Calculator</image:title>
      <image:caption>Street Railway Sweeping Car diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/street-car-sand-box</loc>
    <lastmod>2026-10-05T07:48:54-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/street-car-sand-box.png?v=1777397081</image:loc>
      <image:title>Streetcar Sand Box: Animation and Adhesion Comparison | FIRGELLI</image:title>
      <image:caption>Street-car Sand Box diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/submarine-lamp</loc>
    <lastmod>2026-10-05T07:49:02-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/submarine-lamp.png?v=1777397092</image:loc>
      <image:title>Submarine Lamp: Hiscox Underwater Lamp, Diagram &amp; Pressure Calculator</image:title>
      <image:caption>Submarine Lamp diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/swinging-ball-bearing-bicycle-pedal</loc>
    <lastmod>2026-10-05T07:49:23-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/swinging-ball-bearing-bicycle-pedal.png?v=1777397105</image:loc>
      <image:title>Swinging Ball-bearing Pedal: Basic Bearing-life Calculator</image:title>
      <image:caption>Swinging Ball-bearing Bicycle Pedal diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/swinging-oar-lock</loc>
    <lastmod>2026-10-05T07:49:27-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/swinging-oar-lock.png?v=1777397118</image:loc>
      <image:title>Swinging Oar-lock: Ideal Pin-force Calculator</image:title>
      <image:caption>Swinging Oar-lock diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/ten-wheel-freight-locomotive</loc>
    <lastmod>2026-10-05T07:50:02-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/ten-wheel-freight-locomotive.png?v=1777397129</image:loc>
      <image:title>Ten-wheel Freight Locomotive: Historical Tractive-force Estimate</image:title>
      <image:caption>Ten-wheel Freight Locomotive diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/the-cutter</loc>
    <lastmod>2026-10-05T07:50:07-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/the-cutter.png?v=1777397140</image:loc>
      <image:title>Cutter Sailing Rig: Sail-area and Displacement Ratios</image:title>
      <image:caption>The Cutter diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/three-quarter-lug-rig</loc>
    <lastmod>2026-10-05T07:50:30-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/three-quarter-lug-rig.png?v=1777397152</image:loc>
      <image:title>Three-quarter Lug Rig: Historical Two-mast Arrangement</image:title>
      <image:caption>Three-quarter Lug Rig diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/thrust-bearing</loc>
    <lastmod>2026-10-05T07:50:39-07:00</lastmod>
    <changefreq>weekly</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/thrust-bearing.png?v=1777397166</image:loc>
      <image:title>Rolling Thrust Bearing: Basic L10 Rating-life Calculator</image:title>
      <image:caption>Thrust Bearing diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/timber-hitch</loc>
    <lastmod>2026-10-05T07:50:46-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/timber-hitch.png?v=1777397177</image:loc>
      <image:title>Timber Hitch: Rope Arrangement and Illustrative Geometry</image:title>
      <image:caption>Timber Hitch diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/topsail-schooner</loc>
    <lastmod>2026-10-05T07:51:13-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/topsail-schooner.png?v=1777397189</image:loc>
      <image:title>Topsail Schooner: Historical Rig and Sail-area Comparison</image:title>
      <image:caption>Topsail Schooner diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/two-masted-or-dipping-lug</loc>
    <lastmod>2026-10-05T07:52:35-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/two-masted-or-dipping-lug.png?v=1777397200</image:loc>
      <image:title>Two-masted Lug Rig: Ideal Lift and Component Comparison</image:title>
      <image:caption>Two-masted or Dipping Lug diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/vertical-bucket-paddle-wheel</loc>
    <lastmod>2026-10-05T07:54:16-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/vertical-bucket-paddle-wheel.png?v=1777397213</image:loc>
      <image:title>Vertical Bucket Wheel: Ideal Water-delivery Calculator</image:title>
      <image:caption>Vertical Bucket Paddle Wheel diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/trammel-of-archimedes</loc>
    <lastmod>2026-10-05T07:51:27-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/trammel-of-archimedes.png?v=1777397233</image:loc>
      <image:title>Trammel of Archimedes: Ellipse Geometry Calculator</image:title>
      <image:caption>Trammel of Archimedes diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/lazy-tongs</loc>
    <lastmod>2026-10-04T19:41:04-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/lazy-tongs.png?v=1777397251</image:loc>
      <image:title>Lazy-tongs Mechanism Explained: How Scissor Linkage Extends, Formula, Parts and Uses</image:title>
      <image:caption>Lazy-tongs diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/air-pump-motion-pistons-via-lever-and-racks</loc>
    <lastmod>2026-10-04T21:19:38-07:00</lastmod>
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    <image:image>
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      <image:title>Air-pump Motion: Lever, Pinion and Opposed Piston Racks</image:title>
      <image:caption>Air-pump Motion (pistons via Lever and Racks) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/bell-crank-lever-changing-direction-of-force</loc>
    <lastmod>2026-09-28T22:55:19-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/bell-crank-lever-changing-direction-of-force.png?v=1777397273</image:loc>
      <image:title>Bell-crank Lever (changing Direction of Force): Mechanism, Diagram, Animation &amp; Calculator Explained</image:title>
      <image:caption>Bell-crank Lever (changing Direction of Force) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/bell-crank-with-weighted-cord-and-pulley</loc>
    <lastmod>2026-10-02T08:20:43-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/bell-crank-with-weighted-cord-and-pulley.png?v=1777397284</image:loc>
      <image:title>Bell-crank with Weighted Cord and Pulley Mechanism: How It Works, Parts, Formula, and Uses</image:title>
      <image:caption>Bell-crank with Weighted Cord and Pulley diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/bricard-exact-straight-line</loc>
    <lastmod>2026-10-04T22:02:52-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/bricard-exact-straight-line.png?v=1777397295</image:loc>
      <image:title>Bricard Exact Straight-Line Mechanism: Linkage Animation and Travel Calculator</image:title>
      <image:caption>Bricard Exact Straight-line diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/cardan-straight-line-mechanism</loc>
    <lastmod>2026-10-04T20:48:55-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/cardan-straight-line-mechanism.png?v=1777397316</image:loc>
      <image:title>Cardan Straight-line Mechanism: How It Works, Diagram, Formula, and Uses Explained</image:title>
      <image:caption>Cardan Straight-line Mechanism diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/carpenter-s-bench-clamp</loc>
    <lastmod>2026-10-04T20:49:51-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/carpenter-s-bench-clamp.png?v=1777397327</image:loc>
      <image:title>Carpenter&apos;s Bench-clamp Mechanism Explained: How It Works, Parts, Formula, Diagram</image:title>
      <image:caption>Carpenter&apos;s Bench-clamp diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/chebyshev-linkage</loc>
    <lastmod>2026-10-04T21:43:53-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/chebyshev-linkage.png?v=1777397338</image:loc>
      <image:title>Chebyshev Linkage: Double-Rocker Motion and Coupler-Midpoint Path</image:title>
      <image:caption>Chebyshev Linkage diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/cognate-linkage</loc>
    <lastmod>2026-10-04T20:58:41-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/cognate-linkage.png?v=1777397348</image:loc>
      <image:title>Cognate Linkage Mechanism: How It Works, Roberts-Chebyshev Theorem, Diagram and Uses Explained</image:title>
      <image:caption>Cognate Linkage diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/compliant-mechanism</loc>
    <lastmod>2026-10-04T21:23:40-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/compliant-mechanism.png?v=1777397359</image:loc>
      <image:title>Compliant Mechanism: Flexure Motion, Pin-Joint Clearance and Uses Explained</image:title>
      <image:caption>Compliant Mechanism diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/crank-rocker-mechanism</loc>
    <lastmod>2026-10-04T20:26:52-07:00</lastmod>
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      <image:title>Crank-rocker Mechanism: How It Works, Diagram, Parts, Formula, and Industrial Uses Explained</image:title>
      <image:caption>Crank-rocker Mechanism diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/crossed-slider-chain</loc>
    <lastmod>2026-10-04T20:35:47-07:00</lastmod>
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      <image:title>Crossed-slider Chain Mechanism Explained: How It Works, Parts, Formula, and Uses</image:title>
      <image:caption>Crossed-slider Chain diagram</image:caption>
    </image:image>
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  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/diagonal-catch-hand-gear-raising-piston</loc>
    <lastmod>2026-10-04T21:15:53-07:00</lastmod>
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      <image:title>Diagonal Catch Hand-gear (raising Piston): Mechanism, Parts, Diagram and Formula Explained</image:title>
      <image:caption>Diagonal Catch Hand-gear (raising Piston) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/diagonal-catch-hand-gear-top-of-cylinder</loc>
    <lastmod>2026-10-04T21:16:58-07:00</lastmod>
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    <image:image>
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      <image:title>Diagonal Catch Hand-gear (top of Cylinder): Mechanism, Parts &amp; Calculator Explained</image:title>
      <image:caption>Diagonal Catch Hand-gear (top of Cylinder) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/double-crank-mechanism</loc>
    <lastmod>2026-10-04T21:56:50-07:00</lastmod>
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      <image:title>Double-crank Mechanism Explained: How It Works, Diagram, Parts, Grashof Condition and Uses</image:title>
      <image:caption>Double-crank Mechanism diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/double-rocker-mechanism</loc>
    <lastmod>2026-10-04T22:07:34-07:00</lastmod>
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      <image:title>Double-rocker Mechanism: How It Works, Parts, Formula, Diagram and Uses in Four-Bar Linkages</image:title>
      <image:caption>Double-rocker Mechanism diagram</image:caption>
    </image:image>
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  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/drag-link-mechanism</loc>
    <lastmod>2026-10-04T22:18:51-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/drag-link-mechanism.png?v=1777397446</image:loc>
      <image:title>Drag-link Mechanism Explained: How It Works, Parts, Diagram, Quick-Return Uses &amp; Formula</image:title>
      <image:caption>Drag-link Mechanism diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/drum-and-rope-conversion</loc>
    <lastmod>2026-10-04T22:29:44-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/drum-and-rope-conversion.png?v=1777397460</image:loc>
      <image:title>Drum and Rope Conversion Mechanism Explained: How Winch Drums Convert Rotation to Linear Pull</image:title>
      <image:caption>Drum and Rope Conversion diagram</image:caption>
    </image:image>
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  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/eight-bar-linkage</loc>
    <lastmod>2026-10-04T22:46:29-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/eight-bar-linkage.png?v=1777397485</image:loc>
      <image:title>Eight-bar Linkage Mechanism Explained: How It Works, Parts, Diagram and Grübler DOF Formula</image:title>
      <image:caption>Eight-bar Linkage diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/evans-grasshopper-linkage</loc>
    <lastmod>2026-10-04T23:29:58-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/evans-grasshopper-linkage.png?v=1777397496</image:loc>
      <image:title>Evans Grasshopper Linkage: Coupler-Path Calculator | FIRGELLI</image:title>
      <image:caption>Evans Grasshopper Linkage diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/four-bar-linkage</loc>
    <lastmod>2026-10-05T13:58:41-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/four-bar-linkage.png?v=1777397510</image:loc>
      <image:title>Four-Bar Linkage: Grashof Margin and Geometry Explorer | FIRGELLI</image:title>
      <image:caption>Four-bar Linkage diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/four-link-kinematic-chain-closed</loc>
    <lastmod>2026-10-05T17:51:29-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/four-link-kinematic-chain-closed.png?v=1777397529</image:loc>
      <image:title>Closed Four-Link Chain: Planar Mobility Calculator | FIRGELLI</image:title>
      <image:caption>Four-link Kinematic Chain (closed) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/geometric-folding-algorithms</loc>
    <lastmod>2026-10-05T04:03:07-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/geometric-folding-algorithms.png?v=1777397549</image:loc>
      <image:title>Origami Vertex Angle Calculator: Kawasaki Condition | FIRGELLI</image:title>
      <image:caption>Geometric Folding Algorithms diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/grashof-linkage</loc>
    <lastmod>2026-10-05T04:27:56-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/grashof-linkage.png?v=1777397560</image:loc>
      <image:title>Grashof Linkage: Four-Bar Assembly and Rotation Calculator | FIRGELLI</image:title>
      <image:caption>Grashof Linkage diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/hart-s-exact-straight-line-inversor</loc>
    <lastmod>2026-10-06T04:29:35-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/hart-s-exact-straight-line-inversor-mechanism.png?v=1791286174</image:loc>
      <image:title>Hart&apos;s Exact Straight-Line Inversor: Stroke and Animation</image:title>
      <image:caption>Hart&apos;s Exact Straight-Line Inversor — schematic of the mechanism.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/hart-s-inversors</loc>
    <lastmod>2026-10-06T04:20:38-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/hart-s-inversors-mechanism.png?v=1791285637</image:loc>
      <image:title>Hart&apos;s Inversors: Crossed-Link Motion and Geometry Calculator</image:title>
      <image:caption>Hart&apos;s Inversors — schematic of the mechanism.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/hinge</loc>
    <lastmod>2026-10-05T06:27:18-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/hinge.png?v=1777397597</image:loc>
      <image:title>Hinge Loads: Ideal Two-Hinge Door Moment Calculator | FIRGELLI</image:title>
      <image:caption>Hinge diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/hoberman-sphere</loc>
    <lastmod>2026-10-06T08:36:37-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/hoberman-sphere-mechanism.png?v=1791300997</image:loc>
      <image:title>Hoberman Sphere: Folding Animation and Diameter Calculator</image:title>
      <image:caption>Hoberman Sphere — schematic of the mechanism.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/hoecken-linkage</loc>
    <lastmod>2026-10-06T00:23:06-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/hoecken-linkage.png?v=1777397620</image:loc>
      <image:title>Hoecken Linkage: Link-Length Scaling and Model Limits | FIRGELLI</image:title>
      <image:caption>Hoecken Linkage diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/ideal-machine</loc>
    <lastmod>2026-10-05T08:20:20-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/ideal-machine.png?v=1777397632</image:loc>
      <image:title>Ideal Machine: Force, Travel and Work Calculator | FIRGELLI</image:title>
      <image:caption>Ideal Machine diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/inverted-slider-crank-chain</loc>
    <lastmod>2026-10-05T09:09:43-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/inverted-slider-crank-chain.png?v=1777397643</image:loc>
      <image:title>Crank and Slotted Lever: Sweep-Time Calculator | FIRGELLI</image:title>
      <image:caption>Inverted Slider-crank Chain diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/jansen-s-linkage</loc>
    <lastmod>2026-10-06T05:53:09-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/jansen-s-linkage-mechanism.png?v=1791291188</image:loc>
      <image:title>Jansen’s Linkage: Walking Animation and Foot-Path Calculator</image:title>
      <image:caption>Jansen’s Linkage — schematic of the mechanism.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/kempe-s-universality-theorem</loc>
    <lastmod>2026-10-06T08:46:06-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/kempe-s-universality-theorem-mechanism.png?v=1791301565</image:loc>
      <image:title>Kempe’s Universality Theorem: Working Linkage Example</image:title>
      <image:caption>Kempe’s Universality Theorem — schematic of the mechanism.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/kinematic-coupling</loc>
    <lastmod>2026-10-06T04:42:02-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/kinematic-coupling.png?v=1777397690</image:loc>
      <image:title>Kinematic Coupling: Contact-Count Calculator and Limits | FIRGELLI</image:title>
      <image:caption>Kinematic Coupling diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/leg-mechanism</loc>
    <lastmod>2026-10-04T20:32:00-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/leg-mechanism.png?v=1777397701</image:loc>
      <image:title>Four-Leg Chair Equalizer: Qualitative Posture Viewer</image:title>
      <image:caption>Leg Mechanism diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/metal-expansion-joint</loc>
    <lastmod>2026-10-05T00:35:33-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/metal-expansion-joint.png?v=1777397712</image:loc>
      <image:title>Metal Expansion Joint: Free Pipe-Growth Worksheet</image:title>
      <image:caption>Metal Expansion Joint diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/overconstrained-mechanism</loc>
    <lastmod>2026-10-05T09:45:04-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/overconstrained-mechanism.png?v=1777397723</image:loc>
      <image:title>Overconstrained Linkages: Generic Mobility Count Limits</image:title>
      <image:caption>Overconstrained Mechanism diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/pantograph</loc>
    <lastmod>2026-10-05T09:54:11-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/pantograph.png?v=1777397733</image:loc>
      <image:title>Drawing Pantograph: Exact Homothetic Scale</image:title>
      <image:caption>Pantograph diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/parallel-ruler-form-1</loc>
    <lastmod>2026-10-05T09:59:17-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/parallel-ruler-form-1.png?v=1777397744</image:loc>
      <image:title>Parallel Ruler (Form 1): Exact Equal-Arm Translation</image:title>
      <image:caption>Parallel Ruler (form 1) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/parallel-ruler-form-2</loc>
    <lastmod>2026-10-05T09:59:20-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/parallel-ruler-form-2.png?v=1777397755</image:loc>
      <image:title>Parallel Ruler (Form 2): Hiscox Equal-Link Pivot Path</image:title>
      <image:caption>Parallel Ruler (form 2) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/parallel-ruler-form-4</loc>
    <lastmod>2026-10-05T10:03:39-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/parallel-ruler-form-4.png?v=1777397766</image:loc>
      <image:title>Parallel Ruler (Form 4): Ideal Repeated-Line Transfer</image:title>
      <image:caption>Parallel Ruler (form 4) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/parallel-ruler-form-5</loc>
    <lastmod>2026-10-05T10:03:44-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/parallel-ruler-form-5.png?v=1777397777</image:loc>
      <image:title>Parallel Ruler (Form 5): Hiscox Slotted Crossed Bars</image:title>
      <image:caption>Parallel Ruler (form 5) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/parallel-ruler-form-6</loc>
    <lastmod>2026-10-05T10:05:25-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/parallel-ruler-form-6.png?v=1777397789</image:loc>
      <image:title>Parallel Ruler (Form 6): Ideal Alternating Walk Sequence</image:title>
      <image:caption>Parallel Ruler (form 6) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/pawl-and-elbow-lever-feed-motion</loc>
    <lastmod>2026-10-05T10:10:32-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/pawl-and-elbow-lever-feed-motion.png?v=1777397800</image:loc>
      <image:title>Pawl-and-Elbow Lever Feed: Brown Movement 155</image:title>
      <image:caption>Pawl-and-elbow Lever Feed Motion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/peaucellier-lipkin-linkage</loc>
    <lastmod>2026-10-05T10:14:51-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/peaucellier-lipkin-linkage.png?v=1777397810</image:loc>
      <image:title>Peaucellier-Lipkin Linkage: Exact Straight-Line Inversor</image:title>
      <image:caption>Peaucellier-lipkin Linkage diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/piston-rod</loc>
    <lastmod>2026-10-04T08:34:53-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/piston-rod.png?v=1777397821</image:loc>
      <image:title>Single-Rod Hydraulic Cylinder: Ideal Net Rod Load and Nominal Stress</image:title>
      <image:caption>Piston Rod diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/press-motion-via-two-oblique-bars</loc>
    <lastmod>2026-10-04T13:05:37-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/press-motion-via-two-oblique-bars.png?v=1777397832</image:loc>
      <image:title>Two-Oblique-Bar Press Motion: Exact Toggle Geometry</image:title>
      <image:caption>Press Motion via Two Oblique Bars diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/quadrant-catch-hand-gear-form-a</loc>
    <lastmod>2026-10-04T15:36:18-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/quadrant-catch-hand-gear-form-a.png?v=1777397843</image:loc>
      <image:title>Quadrant Catch Hand-Gear Form A: Declared Arc-Index Ledger</image:title>
      <image:caption>Quadrant Catch Hand-gear (form A) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/quadrant-catch-hand-gear-form-b</loc>
    <lastmod>2026-10-04T15:38:53-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/quadrant-catch-hand-gear-form-b.png?v=1777397853</image:loc>
      <image:title>Quadrant Catch Hand-Gear Form B: Ideal Reduction Ledger</image:title>
      <image:caption>Quadrant Catch Hand-gear (form B) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/quadruplanar-inversor</loc>
    <lastmod>2026-10-04T15:43:18-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/quadruplanar-inversor.png?v=1777397865</image:loc>
      <image:title>Quadruplanar Inversor: Ideal Circle-Inversion Map</image:title>
      <image:caption>Quadruplanar Inversor diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/rhombic-drive</loc>
    <lastmod>2026-10-05T08:57:13-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/rhombic-drive.png?v=1777397877</image:loc>
      <image:title>Rhombic Drive Mechanism: How Philips&apos; Counter-Rotating Stirling Linkage Works, Diagram &amp; Uses</image:title>
      <image:caption>Rhombic Drive diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/rigid-origami</loc>
    <lastmod>2026-10-04T17:41:58-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/rigid-origami.png?v=1777397889</image:loc>
      <image:title>Rigid Origami Mechanism Explained: How Single-DOF Miura-ori Folding Works, Parts, Formula &amp; Uses</image:title>
      <image:caption>Rigid Origami diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/roberts-linkage</loc>
    <lastmod>2026-10-04T17:42:05-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/roberts-linkage.png?v=1777397900</image:loc>
      <image:title>Roberts Linkage Mechanism: How It Works, Diagram, Formula, and Uses in Straight-Line Motion</image:title>
      <image:caption>Roberts Linkage diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/rod-end-bearing</loc>
    <lastmod>2026-10-04T17:42:11-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/rod-end-bearing.png?v=1777397912</image:loc>
      <image:title>Rod End Bearing Mechanism: How It Works, Parts, Diagram, and Linkage Uses Explained</image:title>
      <image:caption>Rod End Bearing diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/scott-russell-linkage</loc>
    <lastmod>2026-10-04T17:46:58-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/scott-russell-linkage.png?v=1777397923</image:loc>
      <image:title>Scott Russell Linkage Mechanism Explained: Diagram, Formula, Stroke and Uses</image:title>
      <image:caption>Scott Russell Linkage diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/screw-clamp-handle-and-lever-holder</loc>
    <lastmod>2026-10-04T17:47:06-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/screw-clamp-handle-and-lever-holder.png?v=1777397936</image:loc>
      <image:title>Screw-clamp (handle and Lever Holder) Mechanism Explained: How It Works, Parts, Formula and Uses</image:title>
      <image:caption>Screw-clamp (handle and Lever Holder) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/see-saw</loc>
    <lastmod>2026-10-04T17:47:19-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/see-saw.png?v=1777397946</image:loc>
      <image:title>See-saw Mechanism Explained: How a First-Class Lever Balances Torque, Parts, and Uses</image:title>
      <image:caption>See-saw diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/single-pivoted-clamp-with-fixed-side-piece</loc>
    <lastmod>2026-10-07T11:58:49-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/single-pivoted-clamp-with-fixed-side-piece.png?v=1777397957</image:loc>
      <image:title>Single Pivoted Clamp with Fixed Side-piece: How the Lever Mechanism Works, Parts &amp; Uses</image:title>
      <image:caption>Single Pivoted Clamp with Fixed Side-piece diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/six-bar-linkage</loc>
    <lastmod>2026-10-07T12:33:00-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/six-bar-linkage.png?v=1777397968</image:loc>
      <image:title>Six-bar Linkage Mechanism Explained: How It Works, Parts, Diagram and Uses</image:title>
      <image:caption>Six-bar Linkage diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/slider-crank-chain-inversion</loc>
    <lastmod>2026-10-07T13:01:26-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/slider-crank-chain-inversion.png?v=1777397979</image:loc>
      <image:title>Slider Crank Chain Inversion Mechanism: How It Works, Diagram, Parts and Uses Explained</image:title>
      <image:caption>Slider Crank Chain Inversion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/steering-linkage</loc>
    <lastmod>2026-10-04T17:49:35-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/steering-linkage.png?v=1777397990</image:loc>
      <image:title>Steering Linkage Mechanism Explained: Ackermann Geometry, Parts, Diagram and Calculator</image:title>
      <image:caption>Steering Linkage diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/stephenson-topology-six-bar-linkage</loc>
    <lastmod>2026-10-04T17:44:59-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/stephenson-topology-six-bar-linkage.png?v=1777398001</image:loc>
      <image:title>Stephenson Topology Six-bar Linkage: How It Works, Diagram, Parts, Uses &amp; Calculator</image:title>
      <image:caption>Stephenson Topology Six-bar Linkage diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/straight-line-mechanism</loc>
    <lastmod>2026-10-05T07:48:45-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/straight-line-mechanism.png?v=1777398012</image:loc>
      <image:title>Hoeken Straight-Line Example: Animation and Path Calculator | FIRGELLI</image:title>
      <image:caption>Straight-line Mechanism diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/studded-disk-to-bell-crank-traverse</loc>
    <lastmod>2026-10-05T07:49:01-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/studded-disk-to-bell-crank-traverse.png?v=1777398023</image:loc>
      <image:title>Studded Disk and Bell Crank: Alternating Motion Calculator | FIRGELLI</image:title>
      <image:caption>Studded Disk to Bell-crank Traverse diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/swashplate</loc>
    <lastmod>2026-10-06T16:20:14-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/swashplate.png?v=1777398035</image:loc>
      <image:title>Swashplate Mechanism: How a Helicopter Rotor Head Works, Parts, Diagram and Uses Explained</image:title>
      <image:caption>Swashplate diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/sylvester-kempe-linkage</loc>
    <lastmod>2026-10-05T07:49:35-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/sylvester-kempe-linkage.png?v=1777398045</image:loc>
      <image:title>Sylvester–Kempe Linkage: Concept and Illustrative Budget</image:title>
      <image:caption>Sylvester-kempe Linkage diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/ten-bar-linkage</loc>
    <lastmod>2026-10-05T07:50:00-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/ten-bar-linkage.png?v=1777398056</image:loc>
      <image:title>Ten-bar Linkage: Nominal Planar Mobility Calculator</image:title>
      <image:caption>Ten-bar Linkage diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/three-link-kinematic-chain</loc>
    <lastmod>2026-10-05T07:50:27-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/three-link-kinematic-chain.png?v=1777398068</image:loc>
      <image:title>Three-link Kinematic Chain: Generic Planar Mobility</image:title>
      <image:caption>Three-link Kinematic Chain diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/tusi-couple</loc>
    <lastmod>2026-10-05T07:52:17-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/tusi-couple.png?v=1777398084</image:loc>
      <image:title>Tusi Couple: Two-to-one Geometry and Straight-line Stroke</image:title>
      <image:caption>Tusi Couple diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/twelve-bar-linkage</loc>
    <lastmod>2026-10-05T07:52:19-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/twelve-bar-linkage.png?v=1777398096</image:loc>
      <image:title>Twelve-bar Linkage: Planar Mobility Count Calculator</image:title>
      <image:caption>Twelve-bar Linkage diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/watt-s-linkage</loc>
    <lastmod>2026-10-05T07:55:30-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/watt-s-linkage.png?v=1777398107</image:loc>
      <image:title>Watt&apos;s Linkage: Illustrated Path and Cubic Comparison</image:title>
      <image:caption>Watt&apos;s Linkage diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/watt-topology-six-bar-linkage</loc>
    <lastmod>2026-10-05T07:55:27-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/watt-topology-six-bar-linkage.png?v=1777398118</image:loc>
      <image:title>Watt Six-bar Linkage: Mobility Count and Dwell-time Comparison</image:title>
      <image:caption>Watt Topology Six-bar Linkage diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/wittgenstein-s-rod</loc>
    <lastmod>2026-10-05T07:56:20-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/wittgenstein-s-rod.png?v=1777398138</image:loc>
      <image:title>Wittgenstein&apos;s Rod: Clearance and RSS Error-budget Calculator</image:title>
      <image:caption>Wittgenstein&apos;s Rod diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/variable-speed-gear</loc>
    <lastmod>2026-10-05T07:53:59-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/variable-speed-gear.png?v=1777398153</image:loc>
      <image:title>Variable-speed Relation: Ideal Pitch-radius Calculator</image:title>
      <image:caption>Variable Speed Gear diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/alternating-circular-motion</loc>
    <lastmod>2026-10-04T21:20:51-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/alternating-circular-motion.png?v=1777398174</image:loc>
      <image:title>Alternating Circular Motion Mechanism: How It Works, Crank-Rocker Diagram, Parts and Uses</image:title>
      <image:caption>Alternating Circular Motion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/friction-gear</loc>
    <lastmod>2026-10-05T19:40:14-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/friction-gear.png?v=1777398187</image:loc>
      <image:title>Friction Gear: Contact Torque and Load Comparison | FIRGELLI</image:title>
      <image:caption>Friction Gear diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/grooved-friction-gearing</loc>
    <lastmod>2026-10-06T03:44:31-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/grooved-friction-gearing.png?v=1777398201</image:loc>
      <image:title>Grooved Friction Gearing: V-Groove Force Calculator | FIRGELLI</image:title>
      <image:caption>Grooved Friction Gearing diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/vibratory-motion</loc>
    <lastmod>2026-10-05T07:54:37-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/vibratory-motion.png?v=1777398212</image:loc>
      <image:title>Vibratory Motion: Ideal Rotating-unbalance Force Calculator</image:title>
      <image:caption>Vibratory Motion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/axial-to-rotational-motion-conversion</loc>
    <lastmod>2026-10-05T09:40:41-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/axial-to-rotational-motion-conversion.png?v=1777398223</image:loc>
      <image:title>Axial-to-rotational Motion Conversion Mechanism: How It Works, Diagram, Formula and Uses</image:title>
      <image:caption>Axial-to-rotational Motion Conversion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/belt-lacing</loc>
    <lastmod>2026-10-04T20:18:38-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/belt-lacing.png?v=1777398234</image:loc>
      <image:title>Belt Lacing Mechanism: How Conveyor Belt Splice Fasteners Work, Parts, Diagram and Uses</image:title>
      <image:caption>Belt Lacing diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/belt-transmission</loc>
    <lastmod>2026-10-04T20:16:57-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/belt-transmission.png?v=1777398245</image:loc>
      <image:title>Belt Transmission Mechanism Explained: How It Works, Diagram, Formula, Parts and Uses</image:title>
      <image:caption>Belt Transmission diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/belting-to-a-shaft-at-any-angle</loc>
    <lastmod>2026-10-04T20:15:36-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/belting-to-a-shaft-at-any-angle.png?v=1777398257</image:loc>
      <image:title>Belting to a Shaft at Any Angle: Guided Flat-Belt Geometry and Animation</image:title>
      <image:caption>Belting to a Shaft at Any Angle diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/capstan-or-vertical-windlass</loc>
    <lastmod>2026-10-04T22:23:53-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/capstan-or-vertical-windlass.png?v=1777398268</image:loc>
      <image:title>Capstan or Vertical Windlass Mechanism Explained: How It Works, Parts, Diagram, and Uses</image:title>
      <image:caption>Capstan or Vertical Windlass diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/combination-of-friction-gear</loc>
    <lastmod>2026-10-04T21:11:57-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/combination-of-friction-gear.png?v=1777398279</image:loc>
      <image:title>Combination of Friction Gear Mechanism: How It Works, Diagram, Parts, Formula, and Uses Explained</image:title>
      <image:caption>Combination of Friction Gear diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/cone-and-disk-variable-speed</loc>
    <lastmod>2026-10-04T19:50:33-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/cone-and-disk-variable-speed.png?v=1777398290</image:loc>
      <image:title>Cone-and-disk Variable Speed Mechanism: How It Works, Diagram, Parts, Formula and Uses</image:title>
      <image:caption>Cone-and-disk Variable Speed diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/continuously-variable-transmission-cvt</loc>
    <lastmod>2026-10-04T20:11:05-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/continuously-variable-transmission-cvt.png?v=1777398302</image:loc>
      <image:title>Continuously Variable Transmission (CVT) Mechanism: How It Works, Parts, Diagram &amp; Uses</image:title>
      <image:caption>Continuously Variable Transmission (CVT) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/cross-lacing</loc>
    <lastmod>2026-10-04T20:33:11-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/cross-lacing.png?v=1777398314</image:loc>
      <image:title>Cross Lacing Mechanism Explained: Figure-8 Flat Belt Drive, Wrap Angle and Capstan Formula</image:title>
      <image:caption>Cross Lacing diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/crown-wheel</loc>
    <lastmod>2026-10-04T20:38:51-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/crown-wheel.png?v=1777398326</image:loc>
      <image:title>Crown Wheel Mechanism: How It Works, Diagram, Gear Ratio Formula and Uses Explained</image:title>
      <image:caption>Crown Wheel diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/cycloidal-drive</loc>
    <lastmod>2026-10-04T20:56:31-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/cycloidal-drive.png?v=1777398345</image:loc>
      <image:title>Cycloidal Drive Mechanism: How It Works, Diagram, Parts, Formula, and Robotics Uses Explained</image:title>
      <image:caption>Cycloidal Drive diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/dual-clutch-transmission</loc>
    <lastmod>2026-10-04T22:32:02-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/dual-clutch-transmission.png?v=1777398356</image:loc>
      <image:title>Dual-clutch Transmission Mechanism: How It Works, Parts, Diagram, Formula and Uses Explained</image:title>
      <image:caption>Dual-clutch Transmission diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/eccentric-crank</loc>
    <lastmod>2026-10-04T22:40:23-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/eccentric-crank.png?v=1777398370</image:loc>
      <image:title>Eccentric Crank Mechanism Explained: How It Works, Diagram, Parts, Formula and Uses</image:title>
      <image:caption>Eccentric Crank diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/elastic-spur-gear</loc>
    <lastmod>2026-10-04T22:48:28-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/elastic-spur-gear.png?v=1777398381</image:loc>
      <image:title>Elastic Spur Gear Mechanism Explained: How It Works, Diagram, Parts, Formula and Uses</image:title>
      <image:caption>Elastic Spur Gear diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/equalizing-thrust</loc>
    <lastmod>2026-10-04T20:59:27-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/equalizing-thrust.png?v=1777398393</image:loc>
      <image:title>Equalizing Thrust Mechanism: How It Works, Diagram, Parts, Uses, Formula and Calculator</image:title>
      <image:caption>Equalizing Thrust diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/frictional-rectilinear-motion</loc>
    <lastmod>2026-10-03T15:04:05-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/frictional-rectilinear-motion.png?v=1777398405</image:loc>
      <image:title>Frictional Rectilinear Motion Mechanism Explained: How It Works, Diagram, Formula &amp; Uses</image:title>
      <image:caption>Frictional Rectilinear Motion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/full-twist-belt</loc>
    <lastmod>2026-10-05T20:40:58-07:00</lastmod>
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    <image:image>
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      <image:title>Full Twist Belt: Crossed Drive, Length and Speed</image:title>
      <image:caption>Full Twist Belt — schematic of the mechanism.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/gambrel-joint-linkage</loc>
    <lastmod>2026-10-03T15:15:21-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/gambrel-joint-linkage.png?v=1777398427</image:loc>
      <image:title>Gambrel Joint Linkage Mechanism: How It Works, Parts, Formula and Real-World Uses Explained</image:title>
      <image:caption>Gambrel Joint Linkage diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/gear-train</loc>
    <lastmod>2026-10-05T03:38:11-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/gear-train.png?v=1777398442</image:loc>
      <image:title>Compound Gear Train: Two-Stage Ratio and Speed Calculator | FIRGELLI</image:title>
      <image:caption>Gear Train diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/geared-horse-power</loc>
    <lastmod>2026-10-06T17:55:38-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/geared-horse-power.png?v=1777398456</image:loc>
      <image:title>Geared Horse-Power: Sweep Animation and Power Calculator | FIRGELLI</image:title>
      <image:caption>Geared Horse-power diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/gyrating-lever-transmission</loc>
    <lastmod>2026-10-06T04:56:15-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/gyrating-lever-transmission-mechanism.png?v=1791287775</image:loc>
      <image:title>Gyrating Lever Transmission: Coaxial Shaft Animation and Geometry</image:title>
      <image:caption>Gyrating Lever Transmission — schematic of the mechanism.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/harmonic-drive</loc>
    <lastmod>2026-10-04T23:24:32-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/harmonic-drive.png?v=1777398490</image:loc>
      <image:title>Harmonic Drive Mechanism Explained: How Strain Wave Gearing Works, Parts, Formula &amp; Uses</image:title>
      <image:caption>Harmonic Drive diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/helping-crank-over-center</loc>
    <lastmod>2026-10-05T06:11:39-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/helping-crank-over-center.png?v=1777398502</image:loc>
      <image:title>Helping Crank: Phase and Arc Geometry Calculator | FIRGELLI</image:title>
      <image:caption>Helping Crank Over Center diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/rope-transmission</loc>
    <lastmod>2026-10-04T17:42:37-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/rope-transmission.png?v=1777398513</image:loc>
      <image:title>Rope Transmission Mechanism: How It Works, Diagram, Parts, Formula and Uses Explained</image:title>
      <image:caption>Rope Transmission diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/horse-power-machine</loc>
    <lastmod>2026-10-05T07:00:06-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/horse-power-machine.png?v=1777398525</image:loc>
      <image:title>Horse-power Machine: Historical Platform and Gear-Ratio Exercise | FIRGELLI</image:title>
      <image:caption>Horse-power Machine diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/horse-power-tread-wheel</loc>
    <lastmod>2026-10-05T07:01:19-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/horse-power-tread-wheel.png?v=1777398536</image:loc>
      <image:title>Horse-power Tread Wheel: Static Incline-Force Exercise | FIRGELLI</image:title>
      <image:caption>Horse-power Tread Wheel diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/hydrostatic-transmission</loc>
    <lastmod>2026-10-05T08:06:33-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/hydrostatic-transmission.png?v=1777398556</image:loc>
      <image:title>Hydrostatic Transmission: Displacement-Ratio Calculator | FIRGELLI</image:title>
      <image:caption>Hydrostatic Transmission diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/interlocking-belt-lacing</loc>
    <lastmod>2026-10-05T08:42:21-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/interlocking-belt-lacing.png?v=1777398568</image:loc>
      <image:title>Interlocking Belt Lacing: Pull per Width Calculator | FIRGELLI</image:title>
      <image:caption>Interlocking Belt Lacing diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/intermittent-transmission</loc>
    <lastmod>2026-10-05T08:50:39-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/intermittent-transmission.png?v=1777398579</image:loc>
      <image:title>Intermittent Transmission: Geneva Engagement Time Calculator | FIRGELLI</image:title>
      <image:caption>Intermittent Transmission diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/link-belt-and-pulley</loc>
    <lastmod>2026-10-04T23:48:09-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/link-belt-and-pulley.png?v=1777398599</image:loc>
      <image:title>Link Belt and Pulley: Modular-Belt Animation and Ratio Calculator</image:title>
      <image:caption>Link Belt and Pulley diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/link-transmission</loc>
    <lastmod>2026-10-04T23:50:37-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/link-transmission.png?v=1777398610</image:loc>
      <image:title>Link Transmission Mechanism: How Four-Bar Linkages Work, Parts, Transmission Angle and Uses</image:title>
      <image:caption>Link Transmission diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/novel-belt-lacing</loc>
    <lastmod>2026-10-05T09:07:17-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/novel-belt-lacing.png?v=1777398621</image:loc>
      <image:title>Novel Belt Lacing: Hiscox Quarter-Turn Crossing Pattern</image:title>
      <image:caption>Novel Belt Lacing diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/oblique-bevel-gear</loc>
    <lastmod>2026-10-06T15:55:09-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/oblique-bevel-gear.png?v=1777398632</image:loc>
      <image:title>Oblique Bevel Gear: Hiscox Right-Angle Out-of-Plane Pair</image:title>
      <image:caption>Oblique Bevel Gear diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/oblique-rollers-oblique-shaft-transmission</loc>
    <lastmod>2026-10-05T09:14:01-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/oblique-rollers-oblique-shaft-transmission.png?v=1777398644</image:loc>
      <image:title>Oblique Rollers: Brown&apos;s Waisted Rolling-Contact Pair</image:title>
      <image:caption>Oblique Rollers (oblique-shaft Transmission) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/oblique-spur-and-bevel-gear</loc>
    <lastmod>2026-10-05T09:15:53-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/oblique-spur-and-bevel-gear.png?v=1777398655</image:loc>
      <image:title>Oblique Spur and Bevel Gear: Hiscox Mixed Gear Pair</image:title>
      <image:caption>Oblique Spur and Bevel Gear diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/oblique-tooth-gear</loc>
    <lastmod>2026-10-05T09:15:56-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/oblique-tooth-gear.png?v=1777398666</image:loc>
      <image:title>Oblique Tooth Gear: Hiscox Inclined-Tooth Pair</image:title>
      <image:caption>Oblique Tooth Gear diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/over-and-over-lacing</loc>
    <lastmod>2026-10-05T09:43:33-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/over-and-over-lacing.png?v=1777398678</image:loc>
      <image:title>Over-and-Over Belt Lacing: Historical Path Geometry</image:title>
      <image:caption>Over-and-over Lacing diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/parallel-plyers</loc>
    <lastmod>2026-10-05T09:57:28-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/parallel-plyers.png?v=1777398690</image:loc>
      <image:title>Parallel Plyers: Exact Parallelogram Jaw Geometry</image:title>
      <image:caption>Parallel Plyers diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/pulley-and-belt-cvt</loc>
    <lastmod>2026-10-04T15:04:02-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/pulley-and-belt-cvt.png?v=1777398701</image:loc>
      <image:title>Pulley-and-Belt CVT: Instantaneous Pitch-Radius Ledger</image:title>
      <image:caption>Pulley-and-belt CVT diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/pulleys-combined-with-a-differential-gear</loc>
    <lastmod>2026-10-04T15:07:40-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/pulleys-combined-with-a-differential-gear.png?v=1777398712</image:loc>
      <image:title>Weston Differential Pulley Block: Ideal Travel and Force Ledger</image:title>
      <image:caption>Pulleys Combined with a Differential Gear diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/registering-dynamometer</loc>
    <lastmod>2026-10-05T03:21:44-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/registering-dynamometer.png?v=1777398722</image:loc>
      <image:title>Registering Dynamometer Mechanism Explained: How It Works, Parts, Diagram, Formula and Uses</image:title>
      <image:caption>Registering Dynamometer diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/reverse-motion-drive</loc>
    <lastmod>2026-10-05T04:55:30-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/reverse-motion-drive.png?v=1777398732</image:loc>
      <image:title>Gear Direction and Speed: Three-Gear Idler Train Calculator</image:title>
      <image:caption>Reverse Motion Drive diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/reversing-lever</loc>
    <lastmod>2026-10-05T06:35:11-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/reversing-lever.png?v=1777398744</image:loc>
      <image:title>Reversing Lever: Gear Direction and Pitch-Diameter Calculator</image:title>
      <image:caption>Reversing Lever diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/rope-sprocket-wheel</loc>
    <lastmod>2026-10-04T17:42:35-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/rope-sprocket-wheel.png?v=1777398757</image:loc>
      <image:title>Rope Sprocket Wheel Mechanism: How It Works, Parts, Capstan Formula and Uses Explained</image:title>
      <image:caption>Rope Sprocket Wheel diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/sectional-belt-lacing</loc>
    <lastmod>2026-10-04T17:47:13-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/sectional-belt-lacing.png?v=1777398769</image:loc>
      <image:title>Sectional Belt Lacing Mechanism: How It Works, Parts, Splice Tension Formula and Calculator</image:title>
      <image:caption>Sectional Belt Lacing diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/sequential-manual-transmission</loc>
    <lastmod>2026-10-04T17:47:32-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/sequential-manual-transmission.png?v=1777398783</image:loc>
      <image:title>Sequential Manual Transmission Mechanism: How It Works, Shift Drum Parts, Formula and Uses</image:title>
      <image:caption>Sequential Manual Transmission diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/skew-worm-and-wheel-gear</loc>
    <lastmod>2026-10-04T17:50:53-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/skew-worm-and-wheel-gear.png?v=1777398808</image:loc>
      <image:title>Skew Worm and Wheel Gear Mechanism Explained: How It Works, Diagram, Parts and Uses</image:title>
      <image:caption>Skew Worm and Wheel Gear diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/spiral-gearing</loc>
    <lastmod>2026-10-04T17:44:55-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/spiral-gearing.png?v=1777398819</image:loc>
      <image:title>Spiral Gearing Mechanism Explained: How It Works, Parts, Spiral Bevel and Hypoid Gear Uses</image:title>
      <image:caption>Spiral Gearing diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/split-spur-gear</loc>
    <lastmod>2026-10-04T17:48:36-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/split-spur-gear.png?v=1777398833</image:loc>
      <image:title>Split Spur Gear Mechanism Explained: How It Works, Diagram, Parts, Uses, Formula and Calculator</image:title>
      <image:caption>Split Spur Gear diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/step-gear</loc>
    <lastmod>2026-10-04T17:49:38-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/step-gear.png?v=1777398844</image:loc>
      <image:title>Step Gear Mechanism: How It Works, Diagram, Parts, Ratio Formula and Lathe Headstock Uses Explained</image:title>
      <image:caption>Step Gear diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/stop-driving-and-reversing-motion</loc>
    <lastmod>2026-10-05T07:48:38-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/stop-driving-and-reversing-motion.png?v=1777398855</image:loc>
      <image:title>Stop Driving and Reversing Motion: Belt Selector and Bevel Drive</image:title>
      <image:caption>Stop Driving and Reversing Motion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/strain-wave-gearing</loc>
    <lastmod>2026-10-05T07:48:47-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/strain-wave-gearing.png?v=1777398867</image:loc>
      <image:title>Strain-Wave Gearing: Animation and Ratio Calculator | FIRGELLI</image:title>
      <image:caption>Strain Wave Gearing diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/three-crank-link</loc>
    <lastmod>2026-10-05T07:50:18-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/three-crank-link.png?v=1777398878</image:loc>
      <image:title>Three-crank Link: Ideal Triangular-link Motion</image:title>
      <image:caption>Three Crank Link diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/toroidal-cvt</loc>
    <lastmod>2026-10-05T07:51:16-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/toroidal-cvt.png?v=1777398896</image:loc>
      <image:title>Toroidal CVT: Roller Arrangement and Ideal Contact-radius Ratios</image:title>
      <image:caption>Toroidal CVT diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/transmission-by-bell-crank</loc>
    <lastmod>2026-10-05T07:51:30-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/transmission-by-bell-crank.png?v=1777398909</image:loc>
      <image:title>Bell Crank Transmission: Ideal Force and Arc-travel Calculator</image:title>
      <image:caption>Transmission by Bell Crank diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/transmission-of-power</loc>
    <lastmod>2026-10-05T07:51:32-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/transmission-of-power.png?v=1777398920</image:loc>
      <image:title>Belt Drive Power Transmission: Speed Ratio, Torque and Power</image:title>
      <image:caption>Transmission of Power diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/transmission-of-rotary-motion</loc>
    <lastmod>2026-10-05T07:51:33-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/transmission-of-rotary-motion.png?v=1777398931</image:loc>
      <image:title>Rotary Motion Transmission: Ideal External Spur-gear Pair</image:title>
      <image:caption>Transmission of Rotary Motion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/transmission-of-two-speeds</loc>
    <lastmod>2026-10-05T07:51:35-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/transmission-of-two-speeds.png?v=1777398941</image:loc>
      <image:title>Transmission of Two Speeds: Ideal Ratio Comparison</image:title>
      <image:caption>Transmission of Two Speeds diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/transmission-reciprocating</loc>
    <lastmod>2026-10-05T07:51:37-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/transmission-reciprocating.png?v=1777398952</image:loc>
      <image:title>Reciprocating Transmission: In-line Slider-crank Geometry</image:title>
      <image:caption>Transmission Reciprocating diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/two-revolutions-for-one-stroke</loc>
    <lastmod>2026-10-05T07:52:30-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/two-revolutions-for-one-stroke.png?v=1777398964</image:loc>
      <image:title>Two Revolutions for One Stroke: Hiscox Toggle Mechanism</image:title>
      <image:caption>Two Revolutions for One Stroke diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/two-speed-gear</loc>
    <lastmod>2026-10-05T07:52:41-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/two-speed-gear.png?v=1777398976</image:loc>
      <image:title>Two-speed Gear: Ideal Ratio Comparison Calculator</image:title>
      <image:caption>Two-speed Gear diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/uniform-intermittent-motion</loc>
    <lastmod>2026-10-05T07:52:57-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/uniform-intermittent-motion.png?v=1777398987</image:loc>
      <image:title>Uniform Intermittent Motion: External Geneva Step and Dwell</image:title>
      <image:caption>Uniform Intermittent Motion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/v-toothed-gear</loc>
    <lastmod>2026-10-05T07:53:16-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/v-toothed-gear.png?v=1777398997</image:loc>
      <image:title>Double-helical Gear: Ideal Axial-force Comparison</image:title>
      <image:caption>V-toothed Gear diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/variable-eccentric</loc>
    <lastmod>2026-10-05T07:53:42-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/variable-eccentric.png?v=1777399008</image:loc>
      <image:title>Variable Eccentric: Ideal Circular-motion Force Calculator</image:title>
      <image:caption>Variable Eccentric diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/variable-transmission-of-motion</loc>
    <lastmod>2026-10-05T07:54:04-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/variable-transmission-of-motion.png?v=1777399019</image:loc>
      <image:title>Belt Transmission: Ideal Speed and Efficiency-adjusted Torque</image:title>
      <image:caption>Variable Transmission of Motion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/variable-rotary-motion</loc>
    <lastmod>2026-10-05T07:53:53-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/variable-rotary-motion.png?v=1777399029</image:loc>
      <image:title>Variable Rotary Motion: Ideal Equal-ellipse Gear Speeds</image:title>
      <image:caption>Variable Rotary Motion diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/vertical-tension-carriage</loc>
    <lastmod>2026-10-05T07:54:25-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/vertical-tension-carriage.png?v=1777399050</image:loc>
      <image:title>Vertical Tension Carriage: Take-Up Animation and Travel Calculator</image:title>
      <image:caption>Vertical Tension Carriage diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/going-train</loc>
    <lastmod>2026-10-05T04:13:10-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/going-train.png?v=1777399062</image:loc>
      <image:title>Going Train Calculator: Clock Gear Ratios and Speeds | FIRGELLI</image:title>
      <image:caption>Going Train diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/anchor-escapement</loc>
    <lastmod>2026-10-04T22:44:25-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/anchor-escapement.png?v=1777399073</image:loc>
      <image:title>Anchor Escapement Mechanism: How It Works, Diagram, Parts &amp; Uses in Pendulum Clocks</image:title>
      <image:caption>Anchor Escapement diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/antique-clock-escapement</loc>
    <lastmod>2026-10-05T08:16:10-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/antique-clock-escapement.png?v=1777399084</image:loc>
      <image:title>Antique Clock Escapement Mechanism: How It Works, Parts, Diagram, and Calculator</image:title>
      <image:caption>Antique Clock Escapement diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/antique-watch-escapement</loc>
    <lastmod>2026-10-05T08:18:22-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/antique-watch-escapement.png?v=1777399095</image:loc>
      <image:title>Antique Watch Escapement Mechanism: How It Works, Parts, Diagram, and Beat Rate Formula</image:title>
      <image:caption>Antique Watch Escapement diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/chronometer-escapement</loc>
    <lastmod>2026-10-04T21:32:27-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/chronometer-escapement.png?v=1777399105</image:loc>
      <image:title>Chronometer Escapement Mechanism: How It Works, Parts, Diagram, and Marine Chronometer Uses</image:title>
      <image:caption>Chronometer Escapement diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/arnold-chronometer-escapement</loc>
    <lastmod>2026-10-05T08:43:51-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/arnold-chronometer-escapement.png?v=1777399116</image:loc>
      <image:title>Arnold Chronometer Escapement Mechanism: How the Spring Detent Works, Parts, and Diagram</image:title>
      <image:caption>Arnold Chronometer Escapement diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/balance-wheel-escapement</loc>
    <lastmod>2026-10-05T09:51:06-07:00</lastmod>
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      <image:title>Balance-wheel Escapement Mechanism: How It Works, Parts, Diagram, Formula and Calculator</image:title>
      <image:caption>Balance-wheel Escapement diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/beat-detaching-hook</loc>
    <lastmod>2026-10-04T19:40:20-07:00</lastmod>
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      <image:title>Boat-detaching Hook: Historical Mechanism &amp; Lever Calculator</image:title>
      <image:caption>Beat-detaching Hook diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/bloxam-s-gravity-escapement</loc>
    <lastmod>2026-10-04T21:50:59-07:00</lastmod>
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      <image:title>Bloxam&apos;s Gravity Escapement: How It Works, Parts, Diagram and Uses in Tower Clocks</image:title>
      <image:caption>Bloxam&apos;s Gravity Escapement diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/centrifugal-pendulum</loc>
    <lastmod>2026-10-04T21:42:54-07:00</lastmod>
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      <image:title>Centrifugal Pendulum Mechanism: How It Works, Diagram, Formula, Parts and Uses Explained</image:title>
      <image:caption>Centrifugal Pendulum diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/compensating-pendulum-bob</loc>
    <lastmod>2026-10-04T21:06:06-07:00</lastmod>
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      <image:title>Compensating Pendulum Bob Mechanism: How It Works, Parts, Diagram and Uses in Precision Clocks</image:title>
      <image:caption>Compensating Pendulum Bob diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/compensation-balance</loc>
    <lastmod>2026-10-04T20:57:50-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/compensation-balance.png?v=1777399185</image:loc>
      <image:title>Compensation Balance Mechanism Explained: How the Bimetallic Wheel Corrects Temperature Error</image:title>
      <image:caption>Compensation Balance diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/compound-compensating-pendulum</loc>
    <lastmod>2026-10-04T21:06:09-07:00</lastmod>
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      <image:title>Compound Compensating Pendulum: How It Works, Parts, Formula and Diagram for Precision Timekeeping</image:title>
      <image:caption>Compound Compensating Pendulum diagram</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-10-04T20:04:54-07:00</lastmod>
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      <image:title>Conical Pendulum Mechanism Explained: How It Works, Diagram, Formula and Uses</image:title>
      <image:caption>Conical Pendulum diagram</image:caption>
    </image:image>
  </url>
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    <loc>https://www.firgelliauto.com/blogs/mechanisms/verge-escapement</loc>
    <lastmod>2026-10-05T07:54:13-07:00</lastmod>
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      <image:title>Verge Escapement: Crown-wheel Illustration and Input Comparison</image:title>
      <image:caption>Verge Escapement diagram</image:caption>
    </image:image>
  </url>
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    <loc>https://www.firgelliauto.com/blogs/mechanisms/cycloidal-pendulum-movement</loc>
    <lastmod>2026-10-04T20:56:35-07:00</lastmod>
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      <image:title>Cycloidal Pendulum Movement Explained: How Huygens Cheeks, Tautochrone Geometry, and Isochronism Work</image:title>
      <image:caption>Cycloidal Pendulum Movement diagram</image:caption>
    </image:image>
  </url>
  <url>
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      <image:title>Cylinder Escapement Mechanism: How It Works, Diagram, Parts, and Uses in Pocket Watches</image:title>
      <image:caption>Cylinder Escapement diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/dead-beat-clock-escapement</loc>
    <lastmod>2026-10-04T21:08:16-07:00</lastmod>
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      <image:title>Dead-beat Clock Escapement Mechanism Explained: Pallet Geometry, Diagram &amp; Calculator</image:title>
      <image:caption>Dead-beat Clock Escapement diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/detached-pendulum-escapement</loc>
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      <image:title>Detached Pendulum Escapement: How It Works, Parts, Diagram, Formula and Uses in Precision Regulators</image:title>
      <image:caption>Detached Pendulum Escapement diagram</image:caption>
    </image:image>
  </url>
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      <image:title>Double Ratchet-Wheel Pendulum Escapement: Motion and Timing</image:title>
      <image:caption>Double Ratchet-wheel Escapement diagram</image:caption>
    </image:image>
  </url>
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      <image:title>Double Tri-toothed Pendulum Escapement Mechanism: How It Works, Parts, Geometry &amp; Uses Explained</image:title>
      <image:caption>Double Tri-toothed Pendulum Escapement diagram</image:caption>
    </image:image>
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      <image:title>Duplex Escapement Mechanism: How It Works, Diagram, Parts, Formula and Uses Explained</image:title>
      <image:caption>Duplex Escapement diagram</image:caption>
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      <image:caption>Electric Balance Wheel Clock diagram</image:caption>
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      <image:title>Electric Time Clock Mechanism Explained: How It Works, Parts, Diagram, and Uses</image:title>
      <image:caption>Electric Time Clock diagram</image:caption>
    </image:image>
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      <image:title>Electric Winding Device Mechanism: How It Works, Diagram, Parts, Calculator and Uses Explained</image:title>
      <image:caption>Electric Winding Device diagram</image:caption>
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      <image:caption>Electro-magnetic Clock Pendulum diagram</image:caption>
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      <image:caption>Endless Cord-winding Device for Clocks diagram</image:caption>
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      <image:title>Endless-chain Maintaining Power (clock) Mechanism Explained: Parts, How It Works, and Uses</image:title>
      <image:caption>Endless-chain Maintaining Power (clock) diagram</image:caption>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/mean-time-sun-dial.png?v=1777399388</image:loc>
      <image:title>Mean-Time Sundial: Equation of Time and Longitude</image:title>
      <image:caption>Mean Time Sun Dial diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/fusee-form</loc>
    <lastmod>2026-10-05T21:08:56-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/fusee-form.png?v=1777399399</image:loc>
      <image:title>Fusee: Endpoint Radius and Torque Comparison | FIRGELLI</image:title>
      <image:caption>Fusee (form) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/fusee-chain-and-spring-drum</loc>
    <lastmod>2026-10-05T21:12:50-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/fusee-chain-and-spring-drum.png?v=1777399410</image:loc>
      <image:title>Fusee Chain and Spring Drum: Torque Calculator | FIRGELLI</image:title>
      <image:caption>Fusee Chain and Spring Drum diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/geared-watch-stop</loc>
    <lastmod>2026-10-05T23:13:55-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/geared-watch-stop-mechanism.png?v=1791267235</image:loc>
      <image:title>Geared Watch Stop: Arm-Contact Animation and Geometry Calculator</image:title>
      <image:caption>Geared Watch Stop — schematic of the mechanism.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/harrison-winding-device</loc>
    <lastmod>2026-10-06T02:42:07-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/harrison-winding-device.png?v=1777399433</image:loc>
      <image:title>Harrison Maintaining Power: Winding and Torque Scenarios | FIRGELLI</image:title>
      <image:caption>Harrison Winding Device diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/harrison-s-going-barrel</loc>
    <lastmod>2026-10-06T02:42:05-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/harrison-s-going-barrel.png?v=1777399444</image:loc>
      <image:title>Harrison Maintaining Power: Energy and Equivalent Spring | FIRGELLI</image:title>
      <image:caption>Harrison&apos;s Going-barrel diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/hook-tooth-escapement</loc>
    <lastmod>2026-10-05T06:42:15-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/hook-tooth-escapement.png?v=1777399454</image:loc>
      <image:title>Hook-tooth Escapement: Ideal Pendulum and Tooth Timing | FIRGELLI</image:title>
      <image:caption>Hook-tooth Escapement diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/lever-escapement</loc>
    <lastmod>2026-10-04T23:30:32-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/lever-escapement.png?v=1777399465</image:loc>
      <image:title>Lever Escapement: Hiscox Item 1184 Relationship Viewer</image:title>
      <image:caption>Lever Escapement diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/pin-wheel-escapement</loc>
    <lastmod>2026-10-04T07:55:33-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/pin-wheel-escapement.png?v=1777399475</image:loc>
      <image:title>Pin-Wheel Escapement: Declared Beat-to-Pin Kinematics</image:title>
      <image:caption>Pin-wheel Escapement diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/lever-chronometer-escapement</loc>
    <lastmod>2026-10-04T21:23:56-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/lever-chronometer-escapement.png?v=1777399489</image:loc>
      <image:title>Lever Chronometer Escapement: Hiscox Item 1185 Phase Viewer</image:title>
      <image:caption>Lever Chronometer Escapement diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/mercurial-compensation-pendulum</loc>
    <lastmod>2026-10-05T00:34:14-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/mercurial-compensation-pendulum.png?v=1777399501</image:loc>
      <image:title>Mercurial Compensation Pendulum: First-Order Thermal Balance</image:title>
      <image:caption>Mercurial Compensation Pendulum diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/modified-three-legged-with-stopping-teeth</loc>
    <lastmod>2026-10-05T08:18:48-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/modified-three-legged-with-stopping-teeth.png?v=1777399510</image:loc>
      <image:title>Double Three-Legged Gravity Escapement: Geometry and Timing</image:title>
      <image:caption>Modified Three-legged with Stopping Teeth diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/mudge-gravity-escapement</loc>
    <lastmod>2026-10-05T08:36:34-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/mudge-gravity-escapement.png?v=1777399522</image:loc>
      <image:title>Mudge Gravity Escapement: Two-Pallet Principle and Gravity-Arm Energy</image:title>
      <image:caption>Mudge Gravity Escapement diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/pendulum-general</loc>
    <lastmod>2026-10-05T10:18:58-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/pendulum-general.png?v=1777399533</image:loc>
      <image:title>Simple Pendulum: Period, Gravity and Finite Amplitude</image:title>
      <image:caption>Pendulum (general) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/pendulum-escapement</loc>
    <lastmod>2026-10-05T10:19:01-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/pendulum-escapement.png?v=1777399543</image:loc>
      <image:title>Pendulum Anchor Escapement: Timing and Wheel Indexing</image:title>
      <image:caption>Pendulum Escapement diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/single-pin-pendulum-escapement</loc>
    <lastmod>2026-10-04T17:44:39-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/single-pin-pendulum-escapement.png?v=1777399560</image:loc>
      <image:title>Single-pin Pendulum Escapement: How It Works, Parts, Geometry and Uses Explained</image:title>
      <image:caption>Single-pin Pendulum Escapement diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/star-wheel-escapement</loc>
    <lastmod>2026-10-04T17:49:05-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/star-wheel-escapement.png?v=1777399572</image:loc>
      <image:title>Star-wheel Escapement Mechanism: How It Works, Parts, Diagram and Formula Explained</image:title>
      <image:caption>Star-wheel Escapement diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/stem-winding-movement</loc>
    <lastmod>2026-10-04T17:49:37-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/stem-winding-movement.png?v=1777399584</image:loc>
      <image:title>Stem-winding Movement Explained: Keyless Works Mechanism, Parts, and Crown-Turn Formula</image:title>
      <image:caption>Stem-winding Movement diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/stud-escapement</loc>
    <lastmod>2026-10-05T07:48:57-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/stud-escapement.png?v=1777399595</image:loc>
      <image:title>Stud Escapement: Animation, Torque and Work Calculator | FIRGELLI</image:title>
      <image:caption>Stud Escapement diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/three-legged-pendulum-escapement</loc>
    <lastmod>2026-10-05T07:50:26-07:00</lastmod>
    <changefreq>weekly</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/three-legged-pendulum-escapement.png?v=1777399605</image:loc>
      <image:title>Three-legged Pendulum Escapement: Three-stroke Timing</image:title>
      <image:caption>Three-legged Pendulum Escapement diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/three-toothed-escapement</loc>
    <lastmod>2026-10-05T07:50:33-07:00</lastmod>
    <changefreq>weekly</changefreq>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/three-toothed-escapement.png?v=1777399615</image:loc>
      <image:title>Three-toothed Escapement: Pendulum Period and Geometry</image:title>
      <image:caption>Three-toothed Escapement diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/two-escape-wheel-pallet-escapement-front</loc>
    <lastmod>2026-10-05T07:52:24-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/two-escape-wheel-pallet-escapement-front.png?v=1777399626</image:loc>
      <image:title>Riefler Double Escape Wheel: Front View and Reference Comparisons</image:title>
      <image:caption>Two Escape-wheel Pallet Escapement (front) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/two-escape-wheel-pallet-escapement-side</loc>
    <lastmod>2026-10-05T07:52:26-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/two-escape-wheel-pallet-escapement-side.png?v=1777399637</image:loc>
      <image:title>Riefler Double Escape Wheel: Side View and Angle Comparisons</image:title>
      <image:caption>Two Escape-wheel Pallet Escapement (side) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/universal-sun-dial</loc>
    <lastmod>2026-10-05T07:53:10-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/universal-sun-dial.png?v=1777399648</image:loc>
      <image:title>Equatorial Sundial: Latitude and Axis-orientation Comparison</image:title>
      <image:caption>Universal Sun Dial diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/watch-regulator</loc>
    <lastmod>2026-10-05T07:54:55-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/watch-regulator.png?v=1777399661</image:loc>
      <image:title>Watch Regulator: Ideal Hairspring Length and Frequency Comparison</image:title>
      <image:caption>Watch Regulator diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/watch-stop</loc>
    <lastmod>2026-10-05T07:54:57-07:00</lastmod>
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      <image:title>Watch Stop: Hacking-lever Illustration and Timing Conversion</image:title>
      <image:caption>Watch Stop diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/watch-train</loc>
    <lastmod>2026-10-05T07:54:59-07:00</lastmod>
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      <image:title>Watch Train: Ideal Compound Gear-ratio and Speed Calculator</image:title>
      <image:caption>Watch Train diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/centrolinead</loc>
    <lastmod>2026-10-04T21:32:31-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/centrolinead.png?v=1777399697</image:loc>
      <image:title>Centrolinead Mechanism Explained: How the Drafting Linkage Aims Lines at Off-Board Vanishing Points</image:title>
      <image:caption>Centrolinead diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/three-part-parallel-ruler</loc>
    <lastmod>2026-10-05T07:50:21-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/three-part-parallel-ruler.png?v=1777399708</image:loc>
      <image:title>Three-part Parallel Ruler: Arm-length Mismatch Comparison</image:title>
      <image:caption>Three Part Parallel Ruler diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/amsler-planimeter</loc>
    <lastmod>2026-10-05T00:17:50-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/amsler-planimeter.png?v=1777399718</image:loc>
      <image:title>Amsler Planimeter Mechanism: How It Works, Parts, Formula, and Diagram Explained</image:title>
      <image:caption>Amsler Planimeter diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/anemometer</loc>
    <lastmod>2026-10-05T00:29:08-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/anemometer.png?v=1777399729</image:loc>
      <image:title>Anemometer Mechanism Explained: How It Works, Parts, Types, and Wind Speed Uses</image:title>
      <image:caption>Anemometer diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/automatic-tipping-scale</loc>
    <lastmod>2026-10-05T09:28:33-07:00</lastmod>
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      <image:title>Automatic Tipping Scale Mechanism: How It Works, Parts, Formula, and Bulk Flow Uses Explained</image:title>
      <image:caption>Automatic Tipping Scale diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/barometer</loc>
    <lastmod>2026-09-28T21:59:06-07:00</lastmod>
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      <image:title>Barometer Mechanism: How It Works, Aneroid vs Mercury Parts, Diagram, and Pressure Formula</image:title>
      <image:caption>Barometer diagram</image:caption>
    </image:image>
  </url>
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    <loc>https://www.firgelliauto.com/blogs/mechanisms/bell-crank-dynamometer</loc>
    <lastmod>2026-10-04T19:57:41-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/bell-crank-dynamometer.png?v=1777399764</image:loc>
      <image:title>Bell-crank Dynamometer: Belt Tension, Lever Balance and Power Calculator</image:title>
      <image:caption>Bell-crank Dynamometer diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/belt-shipper</loc>
    <lastmod>2026-10-04T21:50:06-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/belt-shipper.png?v=1777399777</image:loc>
      <image:title>Belt Shipper Mechanism Explained: How It Works, Parts, Diagram, Animation, and Fast/Loose Pulley Uses</image:title>
      <image:caption>Belt Shipper diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/bisecting-gauge</loc>
    <lastmod>2026-10-04T19:45:37-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/bisecting-gauge.png?v=1777399788</image:loc>
      <image:title>Bisecting Gauge Mechanism: How It Works, Parts, Formula and Uses Explained with Diagram</image:title>
      <image:caption>Bisecting Gauge diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/bourdon-pressure-gauge</loc>
    <lastmod>2026-10-04T21:53:47-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/bourdon-pressure-gauge.png?v=1777399802</image:loc>
      <image:title>Bourdon Pressure Gauge Mechanism Explained: How It Works, Parts, Diagram and Uses</image:title>
      <image:caption>Bourdon Pressure Gauge diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/conchoid-delineator</loc>
    <lastmod>2026-10-04T19:50:43-07:00</lastmod>
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      <image:title>Conchoid Delineator Mechanism: How It Works, Parts, Diagram, and Uses in Drafting</image:title>
      <image:caption>Conchoid Delineator diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/corrugated-tube-pressure-gauge</loc>
    <lastmod>2026-10-04T20:20:00-07:00</lastmod>
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      <image:title>Corrugated Tube Pressure Gauge Mechanism Explained: How It Works, Parts, Diagram, and Uses</image:title>
      <image:caption>Corrugated Tube Pressure Gauge diagram</image:caption>
    </image:image>
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      <image:title>Cyclograph: Three-Rule Circular Arc Mechanism and Coordinate Calculator</image:title>
      <image:caption>Cyclograph diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/cyclograph-form-1</loc>
    <lastmod>2026-10-04T20:54:41-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/cyclograph-form-1.png?v=1777399857</image:loc>
      <image:title>Cyclograph (form 1) Mechanism Explained: How It Works, Parts, Diagram, Formula and Uses</image:title>
      <image:caption>Cyclograph (form 1) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/cyclograph-form-2</loc>
    <lastmod>2026-10-04T20:54:44-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/cyclograph-form-2.png?v=1777399869</image:loc>
      <image:title>Cyclograph (form 2) Mechanism Explained: How It Works, Parts, Formula and Uses</image:title>
      <image:caption>Cyclograph (form 2) diagram</image:caption>
    </image:image>
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  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/differential-weighing-beam</loc>
    <lastmod>2026-10-04T21:30:14-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/differential-weighing-beam.png?v=1777399880</image:loc>
      <image:title>Differential Weighing Beam Mechanism: How It Works, Parts, Diagram and Uses Explained</image:title>
      <image:caption>Differential Weighing Beam diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/dotting-instrument</loc>
    <lastmod>2026-10-04T21:48:28-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/dotting-instrument.png?v=1777399891</image:loc>
      <image:title>Dotting Instrument Mechanism: How the Toothed Wheel Sets Dot Pitch on Drafted Lines</image:title>
      <image:caption>Dotting Instrument diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/double-link-balanced-scale</loc>
    <lastmod>2026-10-04T22:00:59-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/double-link-balanced-scale.png?v=1777399902</image:loc>
      <image:title>Double Link Balanced Scale Mechanism: How It Works, Diagram, Parts, Formula and Uses Explained</image:title>
      <image:caption>Double Link Balanced Scale diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/drawing-instrument-form</loc>
    <lastmod>2026-10-04T22:23:35-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/drawing-instrument-form.png?v=1777399912</image:loc>
      <image:title>Drawing Instrument (form) Mechanism: How It Works, Parts, Diagram &amp; Error Calculator</image:title>
      <image:caption>Drawing Instrument (form) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/dynamometer-form</loc>
    <lastmod>2026-10-04T22:34:52-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/dynamometer-form.png?v=1777399924</image:loc>
      <image:title>Dynamometer (form) Mechanism Explained: How It Works, Parts, Diagram, Formula &amp; Uses</image:title>
      <image:caption>Dynamometer (form) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/dynamometer-rope-strap-brake</loc>
    <lastmod>2026-10-04T22:35:54-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/dynamometer-rope-strap-brake.png?v=1777399936</image:loc>
      <image:title>Dynamometer (rope/strap Brake) Mechanism: How It Works, Diagram, Parts, Formula and Uses Explained</image:title>
      <image:caption>Dynamometer (rope/strap Brake) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/eidograph</loc>
    <lastmod>2026-10-04T22:46:26-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/eidograph.png?v=1777399946</image:loc>
      <image:title>Eidograph Mechanism Explained: Parallel-Bar Drawing Copier, How It Works, Parts, Formula, Diagram</image:title>
      <image:caption>Eidograph diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/ellipsograph-turntable</loc>
    <lastmod>2026-10-04T23:09:28-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/ellipsograph-turntable.png?v=1777399957</image:loc>
      <image:title>Ellipsograph Turntable Mechanism: How It Works, Parts, Formula and Diagram Explained</image:title>
      <image:caption>Ellipsograph Turntable diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/engine-counter</loc>
    <lastmod>2026-10-04T23:15:19-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/engine-counter.png?v=1777399968</image:loc>
      <image:title>Engine Counter: Ratchet Animation and Average Shaft-Speed Calculator</image:title>
      <image:caption>Engine Counter diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/flexible-curve-scriber</loc>
    <lastmod>2026-10-05T13:01:48-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/flexible-curve-scriber.png?v=1777399979</image:loc>
      <image:title>Flexible Curve Scriber: Drawing Guide and Elastic Comparison | FIRGELLI</image:title>
      <image:caption>Flexible Curve Scriber diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/friction-machine</loc>
    <lastmod>2026-10-05T19:51:26-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/friction-machine.png?v=1777399989</image:loc>
      <image:title>Friction Machine: Torque-Arm Brake Power Calculator | FIRGELLI</image:title>
      <image:caption>Friction Machine diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/friction-test</loc>
    <lastmod>2026-10-05T20:13:30-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/friction-test.png?v=1777400002</image:loc>
      <image:title>Friction Test: Force Ratio and Load Sensitivity | FIRGELLI</image:title>
      <image:caption>Friction Test diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/geared-ellipsograph</loc>
    <lastmod>2026-10-05T03:49:23-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/geared-ellipsograph.png?v=1777400014</image:loc>
      <image:title>Geared Ellipsograph: Cardan-Circle Geometry Calculator | FIRGELLI</image:title>
      <image:caption>Geared Ellipsograph diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/helicograph</loc>
    <lastmod>2026-10-05T06:10:29-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/helicograph.png?v=1777400033</image:loc>
      <image:title>Helicograph: Ideal Archimedean Spiral Calculator | FIRGELLI</image:title>
      <image:caption>Helicograph diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/hyperbola-scriber</loc>
    <lastmod>2026-10-05T08:15:05-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/hyperbola-scriber.png?v=1777400043</image:loc>
      <image:title>Hyperbola Scriber: Analytic Curve Geometry Calculator | FIRGELLI</image:title>
      <image:caption>Hyperbola Scriber diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/lazy-tongs-pantograph</loc>
    <lastmod>2026-10-02T15:14:23-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/lazy-tongs-pantograph.png?v=1777400053</image:loc>
      <image:title>Lazy-tongs Pantograph Mechanism: How It Works, Parts, Scale Formula &amp; Engraving Uses Explained</image:title>
      <image:caption>Lazy-tongs Pantograph diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/lippincott-planimeter</loc>
    <lastmod>2026-10-04T23:52:34-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/lippincott-planimeter.png?v=1777400068</image:loc>
      <image:title>Lippincott Planimeter Mechanism: How It Works, Parts, and MEP Measurement Explained</image:title>
      <image:caption>Lippincott Planimeter diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/meter-dial</loc>
    <lastmod>2026-10-05T00:37:39-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/meter-dial.png?v=1777400079</image:loc>
      <image:title>Analog Meter Dial: Linear Scale and Full-Scale Error Worksheet</image:title>
      <image:caption>Meter Dial diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/micrometer-screw-adjustment</loc>
    <lastmod>2026-10-05T00:44:04-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/micrometer-screw-adjustment.png?v=1777400093</image:loc>
      <image:title>Micrometer Screw Adjustment: Lead and Scale Interval</image:title>
      <image:caption>Micrometer Screw Adjustment diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/neer-s-rotary-transmitting-dynamometer</loc>
    <lastmod>2026-10-05T09:03:44-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/neer-s-rotary-transmitting-dynamometer.png?v=1777400105</image:loc>
      <image:title>Neer&apos;s Rotary Transmitting Dynamometer: Chains, Springs and Dials</image:title>
      <image:caption>Neer&apos;s Rotary Transmitting Dynamometer diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/operation-of-a-counter</loc>
    <lastmod>2026-10-05T09:32:37-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/operation-of-a-counter.png?v=1777400127</image:loc>
      <image:title>Operation of a Counter: Hiscox Sector-and-Pin Cascade</image:title>
      <image:caption>Operation of a Counter diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/parabola-drawing-instrument</loc>
    <lastmod>2026-10-05T09:55:42-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/parabola-drawing-instrument.png?v=1777400140</image:loc>
      <image:title>Parabola Drawing Instrument: Exact Focus-Directrix Construction</image:title>
      <image:caption>Parabola Drawing Instrument diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/parabola-scriber</loc>
    <lastmod>2026-10-05T09:55:46-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/parabola-scriber.png?v=1777400150</image:loc>
      <image:title>Parabola Scriber: Exact Taut-String Station Geometry</image:title>
      <image:caption>Parabola Scriber diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/pressure-gauge-form-1</loc>
    <lastmod>2026-10-04T13:18:15-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/pressure-gauge-form-1.png?v=1777400162</image:loc>
      <image:title>Pressure Gauge Form 1: Declared Indication Ledger</image:title>
      <image:caption>Pressure Gauge (form 1) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/pressure-gauge-form-2</loc>
    <lastmod>2026-10-04T13:27:24-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/pressure-gauge-form-2.png?v=1777400173</image:loc>
      <image:title>Pressure Gauge Form 2: Diaphragm Indication Ledger</image:title>
      <image:caption>Pressure Gauge (form 2) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/pressure-gauge-form-3</loc>
    <lastmod>2026-10-04T13:33:06-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/pressure-gauge-form-3.png?v=1777400184</image:loc>
      <image:title>Pressure Gauge Form 3: Panel-Mount Indication Ledger</image:title>
      <image:caption>Pressure Gauge (form 3) diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/tracing-bar</loc>
    <lastmod>2026-10-05T07:51:21-07:00</lastmod>
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    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/tracing-bar.png?v=1777400367</image:loc>
      <image:title>Tracing Bar: Guides, Pivots and Entered-value Comparisons</image:title>
      <image:caption>Tracing Bar diagram</image:caption>
    </image:image>
  </url>
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    <loc>https://www.firgelliauto.com/blogs/mechanisms/traction-recording-dynamometer</loc>
    <lastmod>2026-10-05T07:51:22-07:00</lastmod>
    <changefreq>weekly</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/traction-recording-dynamometer.png?v=1777400378</image:loc>
      <image:title>Traction Recording Dynamometer: Drawbar Work and Average Power</image:title>
      <image:caption>Traction Recording Dynamometer diagram</image:caption>
    </image:image>
  </url>
  <url>
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    <lastmod>2026-10-05T07:51:25-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/trammel-for-drawing-ellipses.png?v=1777400388</image:loc>
      <image:title>Trammel for Drawing Ellipses: Semi-axes and Slider Span</image:title>
      <image:caption>Trammel for Drawing Ellipses diagram</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.firgelliauto.com/blogs/mechanisms/van-winkle-s-power-meter</loc>
    <lastmod>2026-10-05T07:53:25-07:00</lastmod>
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      <image:loc>https://cdn.shopify.com/s/files/1/0615/2193/articles/van-winkle-s-power-meter.png?v=1777400400</image:loc>
      <image:title>Van Winkle Power Meter: Spring-coupled Discs and Ideal Torque</image:title>
      <image:caption>Van Winkle&apos;s Power Meter diagram</image:caption>
    </image:image>
  </url>
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    <lastmod>2026-10-05T07:55:35-07:00</lastmod>
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      <image:title>Webber Dynamometer Mechanism: How the Friction Brake Measures Shaft BHP, Parts and Formula</image:title>
      <image:caption>Webber Dynamometer diagram</image:caption>
    </image:image>
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      <image:title>Air and Gasoline Torch Mechanism Explained: How It Works, Parts, Diagram, and Uses</image:title>
      <image:caption>Air and Gasoline Torch diagram</image:caption>
    </image:image>
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      <image:title>Air Compressor Mechanism: How It Works, Parts, Diagram, CFM Formula &amp; Calculator</image:title>
      <image:caption>Air Compressor diagram</image:caption>
    </image:image>
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      <image:title>Air Compressor Cylinder Mechanism Explained: How It Works, Parts, Diagram, Formula and Calculator</image:title>
      <image:caption>Air Compressor Cylinder diagram</image:caption>
    </image:image>
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      <image:title>Air Compressor Governor Mechanism: How It Works, Diagram, Parts, Formula and Uses Explained</image:title>
      <image:caption>Air Compressor Governor diagram</image:caption>
    </image:image>
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      <image:title>Air-cooling Receiver Mechanism Explained: How It Works, Diagram, Parts, Sizing Formula and Uses</image:title>
      <image:caption>Air-cooling Receiver diagram</image:caption>
    </image:image>
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      <image:title>Aneroid Barometer Mechanism Explained: How It Works, Parts, Diagram and Uses</image:title>
      <image:caption>Aneroid Barometer diagram</image:caption>
    </image:image>
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      <image:caption>Atmospheric Hammer diagram</image:caption>
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      <image:title>Automatic Air Compressor Mechanism: How It Works, Pressure Cycle Diagram, Parts and Uses Explained</image:title>
      <image:caption>Automatic Air Compressor diagram</image:caption>
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      <image:title>Box Kite: Two-Cell Frame, Reference Area and Aerodynamic Force Calculator</image:title>
      <image:caption>Box Kite diagram</image:caption>
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      <image:title>Compound Air Compressor Mechanism Explained: How Two-Stage Compression With Intercooling Works</image:title>
      <image:caption>Compound Air Compressor diagram</image:caption>
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      <image:caption>Compound Pneumatic Locomotive diagram</image:caption>
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      <image:title>Compound Pohle Air Lift Mechanism: How Two-Stage Deep Well Airlift Pumps Work, Diagram and Parts</image:title>
      <image:caption>Compound Pohle Air Lift diagram</image:caption>
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      <image:title>Compressed Air Hammer Mechanism Explained: How It Works, Parts, Diagram and Impact Energy Formula</image:title>
      <image:caption>Compressed Air Hammer diagram</image:caption>
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      <image:title>Compressed Air Lift Mechanism Explained: How It Works, Diagram, Parts, Formula and Uses</image:title>
      <image:caption>Compressed Air Lift diagram</image:caption>
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      <image:title>Compressed Air Lift System Mechanism: How It Works, Parts, Formula, and Industrial Uses Explained</image:title>
      <image:caption>Compressed Air Lift System diagram</image:caption>
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      <image:title>Ornithopter Crank–Rocker Drive Geometry</image:title>
      <image:caption>Mechanical Flyer diagram</image:caption>
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      <image:title>Buchanan Rock Crusher: Eccentric, Toggle Mechanism and Jaw-Opening Calculator</image:title>
      <image:caption>Buchanan Rock Crusher diagram</image:caption>
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      <image:title>Cahall Vertical Water Tube Boiler Mechanism: How It Works, Parts, Diagram, and Uses Explained</image:title>
      <image:caption>Cahall Vertical Water Tube Boiler diagram</image:caption>
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      <image:title>Cylindrical Double Flue Boiler Mechanism: How It Works, Parts, Formula and Industrial Uses Explained</image:title>
      <image:caption>Cylindrical Double Flue Boiler diagram</image:caption>
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      <image:caption>Eberman Injector diagram</image:caption>
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      <image:title>Horizontal Centrifugal Governor: Rotating-Mass Force Calculator | FIRGELLI</image:title>
      <image:caption>Horizontal Centrifugal Governor diagram</image:caption>
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      <image:caption>Lamb Rotary Engine — schematic of the mechanism.</image:caption>
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      <image:title>Lunkenheimer Injector: Four Fixed Nozzles and Integral Valves</image:title>
      <image:caption>Lunkenheimer Injector diagram</image:caption>
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    <lastmod>2026-10-05T00:17:58-07:00</lastmod>
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      <image:caption>Marine Boiler diagram</image:caption>
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    <lastmod>2026-10-06T21:52:09-07:00</lastmod>
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      <image:title>Meissner Mechanical Stoker: Plunger and Step-Grate Motion</image:title>
      <image:caption>Meissner Mechanical Stoker diagram</image:caption>
    </image:image>
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    <lastmod>2026-10-05T08:58:46-07:00</lastmod>
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      <image:caption>Nathan Injector diagram</image:caption>
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    <lastmod>2026-10-04T13:39:19-07:00</lastmod>
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      <image:caption>Pressure Reducing Valve diagram</image:caption>
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    <lastmod>2026-10-05T04:52:21-07:00</lastmod>
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      <image:title>Return Steam Trap: Historical Principle and Float-Trap Comparison</image:title>
      <image:caption>Return Steam Trap diagram</image:caption>
    </image:image>
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</urlset>
