Yarn test system which moves yarn at high speed under constant,

Details Yarn test system which moves yarn at high speed under constant, Yarn test system which moves yarn at high speed under constant,

1997-03-27

1998-08-11

Walsh, Donald P.

Advancing material of indeterminate length

With material-responsive control means

To regulate longitudinal movement of material

2261182, B23Q 1500

Patent

active

057915423

ABSTRACT:
A system for moving yarn under substantially constant tension, including a translationally-fixed pivoting device, having a neutral position, for applying tension to the yarn, and a variable-speed yarn drive for moving the yarn across the pivoting device. The rotational position of the pivoting device is determined in relation to its neutral position, and in response, the speed of the yarn drive is altered to move the pivoting device closer to its neutral position for maintaining a relatively constant tension on the yarn.

REFERENCES:
patent: 4966333 (1990-10-01), Bosch
patent: 5402956 (1995-04-01), Lemke
patent: 5472127 (1995-12-01), Ichii et al.

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