Yes; when the crank is turned, it forms a circle the same as the outside of the wheel.
To what use is the windlass often applied?
The windlass is often used to draw water from wells.
Pulley.
What is a pulley?
A pulley is a wheel with a groove or hollow cut in its edge.
What is the groove for?
The groove is cut so that a rope may move over the wheel without slipping off.
Fig. 55.