Recent Blogs
Hydraulic Pulling Jack Mechanism Explained: How It Works, Parts, Formula & Diagram
How a Hydraulic Pulling Jack works, with formulas, worked examples and tradeoffs. Used in rigging, recovery, cable tensioning and structural pull-back work.
Pulley Mechanism Explained: How Block and Tackle Systems Work, Parts, Formula and Uses
How a Pulley works, with the formula, real industrial examples from cranes to elevators, and engineering tradeoffs vs gears, levers and hydraulics.
Crab Winch Mechanism Explained: How a Double-Reduction Hand Winch Works, Parts and Uses
Crab winch explained — how the double-gear hand winch multiplies pulling force, where riggers and theatres still use them, and how to size one for...
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...