Apparatus for measuring the weft thread position and for aligning the weft thread in textiles
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United States of America Patent
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Jan 23, 1990
Grant Date -
N/A
app pub date -
May 5, 1988
filing date -
Jan 21, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention is a mechanical method for measuring the position of a weft thread in a moving textile fabric and aligning the weft thread. The invention is also an apparatus for carrying out the method. The method comprises introducing substantially at points, a tension (in the direction of the weft thread) and to scan at least in two places the forces that appear in the textile and therefrom determine the draft angle. The method also emcompasses stretching the textile sheet with increasing force in the direction of travel over a follower stretching device and measuring the propelling/dragging forces on the stretching device and determining the draft angle from those measurements.
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