Pattern feed elongation in electronic sewing machine

Details Pattern feed elongation in electronic sewing machine Pattern feed elongation in electronic sewing machine

1980-03-10

1981-01-06

Nerbun, Peter P.

Sewing

Work manipulating

Guides

112315, D05B 2722, D05B 302

Patent

active

042429749

ABSTRACT:
An arrangement for obtaining pattern feed elongation in an electronically controlled sewing machine by utilizing a potentiometer for feed length variation, which potentiometer at a certain point switches in a feed multiplication and reduces its effectiveness so as to obtain a uniform change in feed from 0 to the maximum multiplication desired. Two embodiments are disclosed, one of which utilizes a comparator to eliminate a switch.

REFERENCES:
patent: 4138955 (1979-02-01), Garron
patent: 4177744 (1979-12-01), Wurst et al.
patent: 4185571 (1980-01-01), Minalga

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