Crank -

Reciprocating engines use crankshafts to convert piston motion into rotation.

The housing that contains the crankshaft and connecting rods.

Early models found in China dating back to the Western Han dynasty (202 BC - 9 AD) were used for winnowing fans and grinding grain.

Manually operated car windows use a crank to roll the glass up or down. 3. History of the Crank