Process and apparatus for monitoring thread breakage by the use

Details Process and apparatus for monitoring thread breakage by the use Process and apparatus for monitoring thread breakage by the use

1981-04-07

1983-12-13

Heyman, John S.

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

328 5, 57 81, 57265, D01H 1316, G01R 2912, D04B 3514

Patent

active

044206976

ABSTRACT:
In a process and apparatus for monitoring thread breaks without touching the thread, the stochastic electrical charge of the moving thread is detected without contact by means of a metallic plane electrode disposed at the textile machine close to the moving thread. The change of potential upon the occurrence of a thread break is amplified in a high input resistence amplifier. The output of the amplifier is connected to the threshold device directly or by a capacitor. A reference potential is connected to the threshold device input, and the threshold device outputs a binary signal for indicating the condition of the thread.

REFERENCES:
patent: 3974665 (1976-08-01), Rencin et al.
patent: 4007457 (1977-02-01), Aeppli
patent: 4097769 (1978-06-01), Wilson et al.
patent: 4258326 (1981-03-01), Johne
patent: 4280322 (1981-07-01), Inger

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