Process and apparatus for piecing a yarn end in an open-end rotor spinning machine
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United States of America Patent
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-
Aug 15, 2000
Grant Date -
N/A
app pub date -
Mar 22, 1999
filing date -
May 14, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
For piecing a yarn end at a spinning station of an open-end rotor spinning machine, the previously stopped feed roller is re-activated for a short pre-feeding period. The fiber beard, which has been thinned out by the still rotating open roller, can thus renew itself. The fibers which are combed during this pre-feeding period are removed as waste when the spinning rotor is at a standstill. After completion of the pre-feeding period, the feed roller is rotated in reverse so far back until the fiber beard leaves the area of effect of the opening roller. The feed roller is activated again for the actual piecing process.
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