Recent Blogs
Chain and Pulley (form 3) Mechanism: How Pocketed Sheave Hoists Work, Parts, Diagram and Uses
Chain and Pulley form 3 drive explained — how the hybrid chain-over-sheave system handles slip-free torque transfer in conveyors, hoists, and stage rigging.
Chain and Pulley (form 2) Mechanism Explained: How It Works, Parts, Formula and Uses
Chain and pulley drives combine a roller chain with a pulley wheel to lift loads in elevators, theatre rigging and material handling. See the formulas...
Electric Hoist Mechanism Explained: How It Works, Parts, Power Train Diagram and Calculator
Electric Hoist explained — how the motor, gearbox, drum and brake lift loads in workshops, theatres and warehouses. Sizing formulas, real numbers, diagnostics.
Differential Pulley Mechanism: How It Works, Diagram, Formula and Uses Explained
How a Differential Pulley multiplies lifting force using two fixed sheaves of slightly different diameters — formulas, worked example, and shop-floor uses.
Yale-weston Differential Gear Hoist Mechanism Explained: How It Works, Diagram, Formula, and Uses
How a Yale-Weston differential gear hoist works — the chain-loop pulley system that lets one rigger lift 2,000 lb loads in foundries, shipyards, and mills.
Yale Duplex Hoist Mechanism Explained: Weston Brake, Duplex Pawls, Mechanical Advantage
How a Yale Duplex Hoist works — the dual-pawl ratchet, lever travel, and load math behind hand chain hoists used in mills, foundries, and rigging...
Traveller Hoist Mechanism Explained: How an I-Beam Trolley Hoist Works, Parts, Uses, Wheel-Load Formula
How a Traveller Hoist works — the overhead trolley-and-block system that moves heavy loads horizontally along a beam in foundries, shipyards, and mills.