Material sensing means for sewing machines

Details Material sensing means for sewing machines Material sensing means for sewing machines

1980-08-25

1982-08-03

Nerbun, Peter P.

Sewing

Elements

Starting or stopping

D05B 6900

Patent

active

043422730

ABSTRACT:
A device for monitoring the passage of workpiece ends through a sewing machine. The device includes a photosensitive apparatus adapted to produce a signal in response to the passage of the workpiece ends past the end of a fiber optic light source.

REFERENCES:
patent: 2979745 (1961-04-01), Schaefer, Jr. et al.
patent: 3650229 (1972-03-01), Rovin
patent: 3924550 (1975-12-01), Boser et al.
patent: 4226197 (1980-10-01), Pollmeier et al.

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