How is a sewing machine a compound machine?

Not all sewing machines are compound machines. The definition of a compound machine is one the contains more than one machine within the same case. A machine that is not only a sewing machine but...

Yes, it is. It has a wheel and axle and a lever I believe.

A compound machine is a machine that is made up of more than one simple machine. They they change the amount of force and the direction.

A pulley

Below (Related links) are some links to images of sweing machines and their parts.