A Pawl can be considered as a pointy thing that sits between the teeth of a gear (cog) wheel to either prevent it turning in one or both directions or to push on a tooth to make it turn. This could,...
A pawl is a tiny hinged arm, with its free end resting against a serrated surface. It can slide over the surface in one direction, but will catch on the serrations when going in the other direction....
A pawl and ratchet is used for example in a clock spring winding barrel. A toothed wheel with barbed triangular teeth are cut into the circumference of a metal disc attached to the axle of the spring...
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