Broken warp thread locator

Details Broken warp thread locator Broken warp thread locator

1987-06-16

1989-04-04

Chapman, John

Textiles: weaving

Stopping

Warp

28187, 66163, 324525, 340677, D03D 5130

Patent

active

048176788

ABSTRACT:
The location of a warp thread break in a weaving loom using electrically conductive drop wires bridging an electrode pair upon occurrence of a warp thread break includes applying opposing known voltages across opposite ends of the electrode pair, establishing current circuits including the voltage sources, the electrode pair and a fallen drop wire, and determining the distance between one end of the electrode pair and the fallen drop wire by calculations using known values corresponding with the voltages and measurements of values corresponding to the current values in the current circuits. A system for carrying out the method includes electrode pairs having a detectible resistance, conductive drop wires, voltage sources connected to the electrode pairs, current detecting/measuring devices, computerized calculating system, warp break location indicators and connecting circuit elements.

REFERENCES:
patent: 4372346 (1983-02-01), Hutter
patent: 4399402 (1983-08-01), Pellietier
patent: 4522236 (1985-06-01), Lohr

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