Weft feeder for eliminating yarn tension peaks
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United States of America Patent
Stats
-
Nov 26, 1996
Grant Date -
N/A
app pub date -
Jun 29, 1995
filing date -
Nov 5, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
From a weft feeder (AT), weft yarn (T) is unwound from a reserve (R) on a drum (3) located at an outlet end of the weft feeder (AT). A yarn-braking device (1) includes a frustoconical braking element (6) with varying flexibility and a cup support (8) with an open base. The braking element (6) has narrow tongues (7) placed side-by-side. In the braking element (6), the tongues (7) join together, at a major circumference, into a band (6A) with a smoothly and strictly continuous surface engaging an outlet end of the drum (3), while they are free and freely bear, at a minor circumference, against an inner periphery of the cup support (8). The braking element (6) is connected to the cup support (8) such that the former can be deformed and/or perform limited movements in every direction. An outlet yarn guide (4) is separate from the braking element (6) and is kept motionless, coaxial to the drum (3), while braking takes place.
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