Recent Blogs
Chain Stop Mechanism Explained: How It Works, Force Diagram, Parts and Uses
Explore a pivoted pawl that holds a chain. A separate static-span calculator compares horizontal reaction and segment tension from span and loaded vertical drop.
Stops of Various Forms: Three Ratchet Pawls and Pitch Calculator
Compare hook-gravity, straight-gravity and spring pawl stops. Calculate ratchet pitch and theoretical tooth-passage rates, without a holding-load rating.
Stop Roller Motion: Heart-slot Mechanism and Cycle Travel
Explore Hiscox movement 967, with its heart slot, roller stud and pawl. Calculate completed-cycle angular travel; phase timing is illustrative.
Ratchet (device) Mechanism: How It Works, Parts, Tooth Geometry, and Real-World Uses Explained
How a ratchet works, with formulas, real industrial examples, tradeoffs vs sprag and roller clutches, and a worked sizing example for a winch pawl.
Pawl and Ratchet: Tooth Pitch and Engagement Timing
Explore pawl-and-ratchet engagement. Calculate angular tooth pitch, ideal passage frequency, time per tooth and tooth-pitch travel over an observation interval.