| 摘要 |
A sewing machine has a retractable handwheel which is always biased toward the outside of the frame by a resilient member. When pushed into the frame against the biasing action of the resilient member, the handwheel is locked in a retracted position in the frame by an actuating member. The handwheel is released in conjunction with operation for opening a cover covering the spool chamber of the sewing machine to allow the handwheel to be projected outwardly of the frame, so that the manual rotation of the handwheel may be effected. |
