Recent Blogs
Bridge Truss Mechanism Explained: How It Works, Parts, Forces and Span Uses
Bridge Truss explained — how the chord and web members carry load, design formulas, real span examples, and how civil engineers size and detail them.
Lewis (stone Lifting Wedge) Mechanism Explained: How the Dovetail Self-Locking Lift Works
The Lewis stone lifting wedge lets masons lift multi-ton blocks from a single socket. Learn the geometry, load math, and how Roman and modern crews...
Tappet Valve for a Rock Drill: Mechanism, Diagram, Parts, and Blow-Rate Formula Explained
How a tappet valve runs a pneumatic rock drill — porting, timing, and sizing for mining percussion drills. Real numbers from jackleg and stoper builds.
Steam Hoisting Engine Mechanism: How Mine Winders Work, Parts, Diagram, and Rope Speed Formula
How a Steam Hoisting Engine lifts ore and miners up a vertical shaft — drum sizing, rope speed, named installations, and a worked example for...
Portable Diamond Drill Mechanism: How It Works, Parts, Cross-Section Diagram and Field Uses
Portable diamond drills cut continuous core samples for mineral exploration. Learn how the bit, swivel, and feed system work, with sizing math and field examples.
Log Conveyer Mechanism Explained: How Belt Conveyors Work, Parts, Capacity Formula & Uses
Log conveyors move ore, coal, and waste rock through mining and processing plants. Learn how they work, key sizing formulas, and real-world examples.
Driving Mechanism in Mining: How It Works, Parts, Planetary Gear Diagram and Torque Calculator
Learn how a mining driving mechanism transmits torque from prime mover to cutter or conveyor, with formulas, worked examples, and real underground machine specs.
Windmill and Steel Tower Mechanism: How It Works, Parts, Diagram, and Water Pumping Uses
How a windmill on a steel tower works, sized for water pumping and air compression on remote farms. Formula, worked example, and selection guide from...
Hydraulic Air Compressor Mechanism: How a Trompe Works, Diagram, Parts, Uses, and Formula Explained
How a Hydraulic Air Compressor (trompe) works — falling water entrains air, compresses it underground, and feeds forges, mines, and pneumatic tools without moving parts.
Direct Air Pressure Pump Mechanism: How It Works, Parts, Formula and Uses Explained
Direct air pressure pumps deliver instant pneumatic flow without a tank. Learn how they work, sizing math, and real industrial uses from FIRGELLI engineers.
Proportion Compasses / Hyperbola Drawing: How the Mechanism Works, Parts, and Drafting Uses
How proportion compasses and hyperbola-drawing linkages work, with the geometry, real shop scenarios, and a worked example for pattern-makers and drafters.
Watt Parallel Motion Mechanism Explained: How It Works, Parts, Formula and Uses
Watt Parallel Motion explained — how James Watt's three-bar linkage guides a piston rod in a near-straight line for steam engines, indicators, and suspensions.
Leg-of-mutton Sail Mechanism Explained: How It Works, Parts, Uses, and Aerodynamic Force Diagram
How a leg-of-mutton sail works — geometry, driving force, rigging tradeoffs, and a worked example for sizing a small-craft mainsail by wind speed.
Lateen-rigged Felucca Mechanism Explained: Sail Diagram, Parts, Rig Geometry & Uses
Lateen-rigged felucca explained — how the triangular sail and slanted yard drive Nile cargo boats upwind, with rig geometry, drive force formulas and a worked...
Floating Dry-dock Mechanism: How It Works, Parts, Ballast Formula and Ship Lifting Explained
Floating dry-dock explained — how ballast tanks, pontoons and wing walls lift ships for hull repair, with formulas, worked examples and shipyard applications.
Whitworth Quick-return Mechanism Explained: How It Works, Parts, Formula and Uses
Engineer's guide to the Whitworth quick-return mechanism — how it works, formulas, ratios, and real shaping-machine examples used in metalworking shops.
Travelling Crane Mechanism Explained: How Overhead Bridge Cranes Work, Parts and Uses
Travelling Crane explained — how the bridge, trolley, and hoist work together to move heavy loads across factory bays, with sizing math and real shop...
Miscellaneous Motion Mechanism Explained: How It Works, Diagram, Cam Profile Calculator and Uses
Miscellaneous motion covers irregular, intermittent, and compound motion patterns engineers use in packaging, robotics, and automation. Here's how to spec one.
Miscellaneous (form) Mechanism Explained: Geneva Drive Parts, Diagram, Formula and Worked Example
Miscellaneous mechanisms cover the odd-job devices that don't fit standard categories. Learn how they work, real applications, and design tradeoffs in automation.
Hirth Coupling Indexing Mechanism Explained: How It Works, Parts, Formula and Diagram
Hirth coupling indexing locks rotary tables with self-centring radial teeth. Learn how it works, design formulas, and real CNC and aerospace applications.
Curvic Coupling Indexing Mechanism Explained: How It Works, Parts, Formula and Uses
Curvic Coupling Indexing locks rotary tables to sub-arcsecond accuracy using face teeth. Used in jet engines, machining centres, and turbine rotors.
Stud-and-hole Clutch-box Mechanism Explained: How It Works, Parts, Formula, Diagram and Uses
Stud-and-hole clutch-box explained: how the engagement studs lock into mating holes, sizing math, real machine examples, and failure modes for industrial drives.
Sliding Clutch-box Mechanism Explained: How It Works, Parts, Diagram, Formula and Uses
Sliding Clutch-box explained — how the sliding dog clutch engages gears in tractors, lathes, and gearboxes, with formulas, tolerances, and a worked example.
Frictional Clutch-box Mechanism Explained: How It Works, Parts, Torque Formula and Industrial Uses
Frictional clutch-box explained — how friction plates engage, torque capacity formulas, real industrial examples, and sizing math for machine builders.
Clutch (form) Mechanism Explained: How Dog and Jaw Clutches Transmit Torque
How a form-locking clutch (dog clutch) engages with positive teeth to transmit torque without slip — used in gearboxes, PTOs, and lathe carriages.