Yarn tester system

Details Yarn tester system Yarn tester system

1982-01-29

1983-07-19

Myracle, Jerry W.

Measuring and testing

Sheet, woven fabric or fiber

Filament

73829, 7386244, 242 755, G01L 504

Patent

active

043937012

ABSTRACT:
A yarn tension control for a yarn testing machine includes: a support; a carriage moveable relative to the support; and a tension arm pivotably mounted to the carriage for engaging the yarn. The tension arm is set in a neutral position to apply a predetermined tension to the yarn. Rotation of the arm indicates an incremental change in the yarn tension. Upon such a change in tension the carriage is moved from an initial position to a compensating position to re-establish the predetermined tension. The drive elements then vary the speed of the yarn to produce an offsetting incremental change in the yarn feed rate to restore the tension arm to its neutral position.

REFERENCES:
patent: 2816758 (1957-12-01), Danly
patent: 3726137 (1973-04-01), Denton
patent: 4295252 (1981-08-01), Robinson et al.
Continuous Monitoring of Yarn Shrinkage or Stretch, Publication of Lawson-Hemphill, Inc., 1971.

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