Electronic sewing machine with a stitch control device

Details Electronic sewing machine with a stitch control device Electronic sewing machine with a stitch control device

1980-03-31

1982-01-05

Nerbun, Peter P.

Sewing

Work manipulating

Guides

D05B 302

Patent

active

043088147

ABSTRACT:
A single motor controls needle swing and fabric feed in a sewing machine. The motor is connected to a transmission which alternately locks either the needle swing or the fabric feed while releasing either the fabric feed or the needle swing as the case may be. The motor is operated in accordance with a predetermined program by an electronic control system. Multiplexers are used in order to alternately transmit feed data and needle control data to the motor. Two embodiments are taught: one embodiment being purely digital in nature, and the other embodiment including an analog feedback loop.

REFERENCES:
patent: 3929081 (1975-12-01), Ketterer
patent: 3984745 (1976-10-01), Minalga

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