Ratchets and pawls are mechanical assemblies that are used to transmit intermittent rotary motion, or even to permit a shaft to rotate in one direction but not the other. Ratchets and pawls are often made of:
steel
stainless steel
cast iron
brass
other metal materials
Features
Ratchets are occasionally called ratchet tires because they consist of a rotating gear or rack with angled tooth. Pawls, which are occasionally misidentified as ratchets, are slim protrusions that rest against a ratchet to restrict its movement. When the ratchet is usually rotated in one path, the pawl is raised and moves smoothly between the angled the teeth. When the ratchet’s rotation stops, the pawl rests between your the teeth and makes a clicking noise. Ratchets and pawls that permit rotation in only one direction cause the pawl and teeth to clash if the ratchet is usually turned the opposite way.
Pawl
Applications
Applications for these single-direction devices include:
turnstiles
spanners
Pawls For Ratchets Wheel winders
jacks
The action of a ratchet could be either harsh or smooth, based on the configuration of the ratchet teeth and pawl.