Recent Blogs
Block and Tackle Mechanism: How It Works, Parts, Formula, and Mechanical Advantage Explained
How a Block and Tackle multiplies lifting force using rope and pulleys. Mechanical advantage formulas, rigging examples, and real sailing and crane applications.
White's Pulleys Mechanism Explained: How a Single-Rope Stepped-Sheave Tackle Works
White's Pulleys explained — how this rope-and-pulley tackle multiplies hauling force up to 6:1 for theatre rigging, sail handling, and field hoists.
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.
Spanish Barton (form 1) Mechanism Explained: 5:1 Compound Pulley Diagram, Parts and Uses
How the Spanish Barton form 1 tackle works, its 5:1 mechanical advantage, rigging formula, and worked example for lifting heavy loads in arborist and rescue...
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.
Movable Pulley with Constant-tension Counterweight: How It Works, Diagram, Formula and Uses
How a movable pulley with constant-tension counterweight balances loads in theatre flies, sash windows, and lab gantries. Formula, worked example, and design rules.
Movable Lower Pulley (single-movable) Mechanism: How It Works, Diagram, Parts and Rigging Uses
Learn how a single movable lower pulley halves lifting force in rigging, elevators, and theatre fly systems. Formulas, worked example, and design tradeoffs.
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.
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.