Intermittent stitching device of sewing machines

Details Intermittent stitching device of sewing machines Intermittent stitching device of sewing machines

1975-04-23

1978-02-14

Hunter, H. Hampton

Sewing

Elements

Starting or stopping

D05B 6922

Patent

active

040732533

ABSTRACT:
In a sewing machine having an electric motor and a foot control unit for driving the sewing machine, an intermittent stitching device which comprises a clutch device provided on the upper shaft, a clutch releasing device including an electromagnet and an electric control circuit for energizing the electric motor and the electromagnet via the foot controller, the electric motor and the electromagnet are energized and deenergized simultaneously by the operation of the foot control unit and to thereby intermittently cause rotation of the upper shaft of the sewing machine for producing intermittent stitches.

REFERENCES:
patent: 2863411 (1958-12-01), Peets
patent: 3388681 (1968-06-01), Fujita
patent: 3780681 (1973-12-01), Sasaki
patent: 3793566 (1974-02-01), Mailaender

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