Electric sewing machine with a speed control system

Details Electric sewing machine with a speed control system Electric sewing machine with a speed control system

1980-01-22

1981-09-08

Nerbun, Peter P.

Sewing

Elements

Starting or stopping

D05B 6918

Patent

active

042878438

ABSTRACT:
A sewing machine composed of a drive motor, an upper shaft with detector, a motor speed control and a motor starting and stopping control. The motor speed control has a bistable device to start and stop the machine in response to signals from a switch and an extreme lower speed control to drive the motor at an extreme low speed in response to a signal from a switch. Motor speed control also has counters which when set and actuated by a switch execute a predetermined finite number of stitches. Motor control device also has circuits allowing the motor to operate in response to a variable speed control switch.

REFERENCES:
patent: 4014277 (1977-03-01), Morinaga et al.
patent: 4150634 (1979-04-01), Brown et al.
patent: 4217841 (1980-08-01), Daido et al.

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