Recent Blogs
Two Fixed and One Movable Pulley Combination: How a 3:1 Block and Tackle Works, Parts and Uses
Two fixed and one movable pulley combination explained — mechanical advantage, rigging math, and real lifting examples from theatre, marine, and warehouse work.
Spanish Barton (form 2) Mechanism Explained: 5:1 Compound Pulley Parts, Formula & Rigging Uses
Spanish Barton form 2 rigging explained — how stagehands and riggers achieve 5:1 mechanical advantage with two single blocks to lift heavy loads safely.
Simple Lifting Pulley Mechanism: How It Works, Diagram, Parts, Formula and Uses Explained
How a simple lifting pulley works — fixed single-sheave mechanics, rope tension math, and real rigging examples from workshops, theatres, and barns.
Pulley System with Cord and Movable Pulleys (d): How It Works, Parts, Formula and Uses Explained
How a cord-and-movable-pulley system halves lifting force. Real worked example, mechanical advantage formula, and rigging examples for shop and field use.
Pulley System with Cord and Movable Pulleys (c): Mechanism, Diagram, Formula and Uses Explained
How a cord-and-movable-pulley system halves lifting force in rigging, theatre, and workshop hoists. Mechanical advantage formulas, worked example, and diagrams.
Pulley System with Cord and Movable Pulleys (b) Mechanism Explained: How It Works, Parts, and Uses
Movable pulley systems with cord cut lifting force in half or better. See how riggers, theatres, and shipyards use them to hoist heavy loads with...
Pulley System with Cord and Movable Pulleys (a) Mechanism: How It Works, Parts, Formula, and Uses
Movable pulley systems with cord cut lifting force in half or more. Learn the mechanical advantage formula, real rigging examples, and design tradeoffs.
Mast and Gaff Hoist Mechanism: How It Works, Parts, Geometry, and Mining Uses Explained
Mast and gaff hoist explained — how miners use the rig to lift ore, timber, and machinery from shafts. Includes formula, worked example, and selection...
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...
Safety Tackle Mechanism: How It Works, Parts, Diagram, Formula and Industrial Uses Explained
Safety Tackle explained — how the cam-and-pawl arrest mechanism stops a falling load on hoists, lifts, and mill drives. Engineering, formulas, and real examples.