Means and method for sensing loom conditions indicative of potential fabric defects
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United States of America Patent
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May 24, 1983
Grant Date -
N/A
app pub date -
Jan 7, 1981
filing date -
Jan 7, 1981
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A first sensor comprising interspersed light emitting and receiving fibers is situated at the egress slot of an air containment element on a fluid weft insertion type loom and retroreflectively senses filling yarn as it egresses from the element. The first sensor, placed along the length of the air containment tube, together with a second sensor outboard of the shed is used to discriminate filling yarn condition and the impact of those conditions on fabric quality. Signals from the first and second sensors are employed in a logical method to permit continued operation of the loom when particular faults are sensed but do not represent conditions warranting stopping of the loom, while said sensors do produce loom stopping signals when faults of predetermined values are sensed. Loom output efficiency is thus improved by allowing a controlled number of defects to enter the finished fabric.
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