Thread monitoring device

Details Thread monitoring device Thread monitoring device

1981-05-26

1983-02-08

Nerbun, Peter P.

Sewing

Elements

Starting or stopping

28187, 200 6118, D05B 6936

Patent

active

043722350

ABSTRACT:
A thread monitoring device wherein the broken tension on a thread (or threads) is sensed by a biased spring to close an electric circuit yielding an audible or visual signal.

REFERENCES:
patent: 1372556 (1921-03-01), Sawtell
patent: 3009433 (1961-11-01), Kuhn
patent: 4269131 (1981-05-01), Principe
patent: 4306231 (1981-12-01), Bagnall et al.

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