Interesting Ratchet Mechanism

Sat, 14 May 2011

I came across this alternative way of using a ratchet as a drive mechanism. The lever on the right is the input. Pull it back and forth to intermittently drive the wheel forward. As the lever is pushed anti-clockwise it lifts the pawl out of the gear before turning it back leaving the gear wheel stationary. Pull the lever clockwise and the pawl re-engages before turning the wheel.