Sewing machine control

Details Sewing machine control Sewing machine control

1983-01-10

1984-06-05

Albritton, C. L.

Electrical resistors

Mechanically variable

With support

338134, 338172, 338200, H01C 1000

Patent

active

044531524

ABSTRACT:
A control for a sewing machine is provided with a turnable outer knob for operating a potentiometer, and a slidable inner knob within the outer knob for moving a contact member to connect conductive paths on a printed circuit board which supports both the potentiometer and contact members.

REFERENCES:
patent: 1877739 (1932-09-01), Schneider
patent: 2258690 (1941-10-01), Rubinstein
patent: 2765384 (1956-10-01), Arisman
patent: 3187118 (1965-06-01), Butler et al.
patent: 3312925 (1967-04-01), Frantz
patent: 3602868 (1971-08-01), Lybrook
patent: 3643199 (1972-02-01), Tanaka
patent: 3748627 (1973-07-01), Zdanys, Jr.
patent: 3924220 (1975-12-01), Matsui et al.
patent: 3927276 (1975-12-01), Lipp
patent: 4090167 (1978-05-01), Walker et al.

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