Textiles: manufacturing – Warp preparing or handling – With means responsive to sensed condition
Patent
1989-12-27
1991-01-15
Schroeder, Werner H.
Textiles: manufacturing
Warp preparing or handling
With means responsive to sensed condition
226118, 242 755, B65H 5900, D02H 1314
Patent
active
049843419
ABSTRACT:
Apparatus for controlling tension in a traveling yarn includes sequential yarn-engaging driven and idler rolls, the driven roll having a stationary rotational axis and the rotational axis of the idler roll being movable in a defined path responsive to tension variations in the traveling yarn, a piston-and-cylinder biasing assembly for urging the idler roll into yarn tensioning engagement, and a potentiometer for sensing tension-responsive movement of the idler roll and operatively associated with the driven roll for varying its yarn driving speed to compensate for such tension variations. In one embodiment, the idler roll follows a horizontal path of movement and is spaced considerably from the driven roll for functioning as a yarn accumulator. In a second embodiment, the idler roll pivots through an arcuate path of movement centered about the driven roll.
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Darigo Julius
Hagewood John F.
DeSandro Bradley Kurte
McCoy-Ellison, Inc.
Schroeder Werner H.
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