Switching device of a double-function sewing machine

Details Switching device of a double-function sewing machine Switching device of a double-function sewing machine

1983-01-20

1984-10-23

Schroeder, Werner H.

Sewing

Stitch forming

Multiple machines

D05B 114

Patent

active

044781610

ABSTRACT:
A double-function sewing machine, which is provided with a lock stitch forming mechanism and an overlock stitch forming mechanism, has a common driving source and a common flywheel for the two mechanisms. The sewing machine is provided with a switching device which includes a switch key connected to the flywheel of the machine. The switch key is selectively switchable to engage the shaft of the lock stitch-forming mechanism or a drive of the overlock stitch-forming mechanism. The switching device further includes a switching pawl which is engageable with and disengageable from the drive of the overlock stitch forming mechanism to hold the latter when the lock stitch forming mechanism is operated.

REFERENCES:
patent: 4267786 (1981-05-01), Hanyu et al.
patent: 4343250 (1982-08-01), Hanyu et al.

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