False twist roll
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United States of America Patent
Stats
-
Sep 18, 1990
Grant Date -
N/A
app pub date -
May 11, 1989
filing date -
Oct 23, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A false twisting roll for imparting false twist to an advancing yarn of manmade fibers is disclosed. The roll has a generally conical and somewhat concave surface configuration, and the angle of inclination of the roll axis is adjustable with respect to the yarn path leading into contact with the roll. To insure optimal twisting conditions at all adjustable inclinations of the roll, the position of the pivotal axis of the roll, and the shape of the surface of the roll are adapted to each other so that the yarn path leading into contact with the roll is predetermined and remains constant. This in turn assures that the upstream twisting conditions of the yarn are unchanged.
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