Recent Blogs
Differential-Seat Safety Valve: Linked Heads, Pressure Areas and Spring-Force Comparison
Explore a differential-seat valve cutaway and compare projected pressure areas with spring loading. An educational mechanism model, not a safety-valve sizing tool.
Differential Governor Mechanism: How It Works, Parts, Diagram and Calculator for Steam Engines
Explore a weighted-rope differential governor. Compare drive and fan rim speeds, weight movement, ideal rope tensions and required shaft torques.
Diagonal Twin-screw Engine Mechanism: How It Works, Parts, Diagram and Marine Uses Explained
Watch crossed connecting rods drive two inclined-cylinder slider-crank trains. Calculate cylinder-axis projections and compare the space tradeoff as inclination changes.
De Laval Steam Turbine: How It Works, Nozzle Diagram, Parts, Formula & Uses Explained
Explore a single-stage De Laval impulse turbine and its velocity components. Compare ideal blade-speed ratio, utilization and optimum speed for an entered nozzle angle.
Davies' Disc Engine Mechanism Explained: How the Wobble Disc Rotary Steam Engine Works
Explore a nutating disc inside conical heads and a spherical case. Calculate rim-height range, projected diameter, crank orbit and cycle frequency.
Cross-head Slide Mechanism: How It Works, Parts, Diagram, and Side-Thrust Calculator
Explore a guided crosshead and calculate ideal side thrust, connecting-rod force and load per simultaneously loaded guide surface from axial force and rod angle.
Crank-shaft Governor Mechanism: How It Works, Parts, Diagram & Steam Engine Speed Control Explained
Explore a spring-balanced crank-shaft governor with a compound eccentric. Compare steady equilibrium, stop positions, weight forces, spring tensions and eccentric throw.
Crank-pin Lubricator Mechanism: How Centrifugal Big-End Oiling Works, Parts, and Diagram
Explore centrifugal crank-pin lubrication. Calculate ideal pressure difference and equivalent oil head between two radii from shaft speed and oil density.
Corrugated Expansion Coupling Mechanism: How Bellows Absorb Steam Pipe Thermal Expansion
Explore a corrugated bellows coupling and calculate axial pressure thrust from effective bellows diameter and gauge pressure. Includes equations and a worked example.
Corliss Valve Gear Mechanism: How It Works, Parts, Cutoff Timing, and Uses Explained
Explore the Corliss wrist plate and four valve drives. Compare admission time, stroke time and wrist swing with an animated timing calculator.
Compound Yacht Engine Mechanism: How Two-Stage Steam Expansion Works, Parts and Diagram
Explore a vertical compound yacht engine. Compare HP and LP cylinder areas and the receiver pressure that gives equal static net piston forces.
Compound Oscillating Engine Mechanism: How It Works, Trunnion Valve Parts, Diagram & Uses
Explore a compound oscillating engine with rocking cylinders and a shared crankpin. Compare bore, stroke, swept volume and gross pressure-area force.
Compound Locomotive Cylinders Mechanism: How It Works, Parts, Diagram and Cylinder Volume Ratio
Compare high- and low-pressure cylinder bores in a compound locomotive. Explore equal-stroke volume ratios, target LP bore and simplified pressure-area forces.
Compound Engines Explained: How Staged Steam Expansion Works, Parts, Diagram & Uses
Explore two tandem compound steam engines driving separate shafts. Compare cylinder areas, swept volumes and absolute boiler, receiver and exhaust pressure ratios.
Dawson’s Compensating Governor: Linked Central Weight and Equilibrium Calculator
Explore Dawson’s linked balls and central weight. Compare ideal equilibrium speed across arm angles using adjustable lengths and masses.
Cochrane Rotary Engine Mechanism: How It Works, Parts, Diagram, and Uses Explained
Explore a single rotating wing and hollow eccentric drum in the Cochrane rotary engine. Calculate crescent volume, ideal mean torque and work from assumed effective...
Morrin Climax Boiler: Central Drum, Inclined Water Tubes and Evaporation Calculator
Explore the Morrin Climax boiler’s central drum and inclined return-loop tubes. Estimate evaporation from effective surface area, absorbed heat flux and latent heat.
Centrifugal Lubricating Device Mechanism: How It Works, Diagram, Parts, Formula and Uses Explained
Explore an open annular crank-pin oil cup fed by a stationary spout. Calculate ideal centrifugal pressure, equivalent oil head and rim acceleration.
Centrifugal Exhaust Head Mechanism: How It Works, Parts, Diagram and Calculator
See a fixed tangential-entry exhaust head separate liquid into a drain. Calculate liquid carryover and total outlet flow using an entered removal percentage.
Centrifugal Crank-pin Oiler: How It Works, Diagram, Parts, Formula & Uses Explained
See a fixed oil cup feed a revolving pipe to a crank pin. Compare angular speed, acceleration and ideal centrifugal pressure; oil flow and lubrication...
Cartwright's Parallel Motion Mechanism: How It Works, Diagram, Parts, and Uses Explained
Explore Cartwright’s geared parallel motion. Mirrored cranks and equal rods drive a piston crosshead; compare stroke, rod tilt, mean piston speed and flywheel speed.
Cam-bar Valve Movement Mechanism: How It Works, Parts, Diagram and Uses in Steam Engines
Explore a cam bar on parallel support arms driving two roller-guided valve stems. Compare bar travel, stem excursion and geometric speed.
Bundy Steam Trap: Weighted Bowl Mechanism and Batch-Cycle Calculator
Explore the historical Bundy weighted-bowl return trap, see its operating sequence, and estimate cycle time from batch volume and filling/discharge rates.
Brownley Injector: Two-stage Animation and Thermal Balance Calculator
Explore the Brownley injector’s lifting and forcing jets and common overflow cock. Compare two-stage condensation temperatures and mass flows in an animated calculator.
Bremme Valve Gear Mechanism Explained: Parts, How It Works, Formula, and Marine Steam Engine Uses
Explore Bremme’s suspension-link valve gear. Adjust the support and compare valve travel, opening beyond lap and speed through one shaft revolution.