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.
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.
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...
Bell-crank with Weighted Cord and Pulley Mechanism: How It Works, Parts, Formula, and Uses
Bell-crank with weighted cord and pulley explained — how the linkage converts gravity into linear pull for gates, signals, and theatre rigging. Formula and worked...