D. C. Yarn tension control

Details D. C. Yarn tension control D. C. Yarn tension control

1984-02-21

1985-08-06

Watkins, Donald

Textiles: spinning, twisting, and twining

Apparatus and processes

Twist setting

57 91, 57284, 57287, 57352, D02G 334, D01H 1310, B65H 5922

Patent

active

045327602

ABSTRACT:
A direct current electromagnetic disc type tension control which periodically has the D. C. voltage increased from low voltage to high voltage and the high voltage is driven to zero a successive predetermined number of times to vibrate the tension discs in order to break the contact between the tension discs and between the tension discs and the electromagnet to lower the resistance to rotation of the discs.

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