Clutch for sewing machine thread winding mechanism

Details Clutch for sewing machine thread winding mechanism Clutch for sewing machine thread winding mechanism

1984-02-06

1985-06-11

Schroeder, Werner H.

Sewing

Elements

Bobbin winding

192 67P, D05B 5900

Patent

active

045221405

ABSTRACT:
In a sewing machine, a stop-motion mechanism is provided for selectively performing stitching operation and thread winding operation. The stop-motion mechanism has a pulley secured to one end of a main drive shaft, which is driven by an electric motor, and a transmission disc for transmitting rotation of the pulley to a loop taker. To the pulley is detachably connected an operating member having a pair of engaging pins adapted to extend through the pulley. The operating member is rotated together with the pulley but axially displaceable with respect to the pulley between two positions, one position being close to the pulley in which engagement between the engaging pins and the transmission disc is established so that rotation of the pulley is transmitted to the transmission disc for ordinary stitching operation, and the other position being away from the pulley in which the engaging pins are disengaged from the transmission disc so that the transmission disc is stationary while the pulley is rotated for thread winding operation.

REFERENCES:
patent: 4091755 (1978-05-01), Ishikawa et al.
patent: 4105106 (1978-08-01), Geis

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