Process and device for piecing on an open-end spinning device
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United States of America Patent
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Mar 9, 1993
Issued Date -
N/A
app pub date -
Apr 16, 1991
filing date -
Jan 18, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A yarn piecing device and process for an open-end spinning machine wherein opened fiber is fed to a fiber collection surface in a pneumatic stream. The stream of fibers is shifted from the fiber collection surface when a broken or missing yarn is detected and the fiber feed to an opening device is interrupted. After the yarn is back-fed to the collection surface, the fiber feed to the opening device is restarted and the pneumatic stream of fibers is shifted back to the fiber collection surface before the fiber density in the pneumatic stream attains its production strength density.
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