SEWING MACHINE

摘要

A sewing machine having a torsion spring coupling between drive and machine shaft. An engageable catch pawl acts on a stop element connected to the drive, which stop element is connected to the drive side of the coupling spring of the drive. If the catch pawl is engaged with the machine in operation and the stop element is blocked, the coupling spring is released and hence the coupling disengaged. The motor may then run down while the motor shaft is stopped resiliently in a predetermined position via the coupling spring which simultaneously the coupling spring prevents excessive forces from occurring due to inertia and excess stressing. Hence this construction permits the motor to be stopped rapidly from full operation with simple means.