Method and apparatus for monitoring the tension and quality of a

Details Method and apparatus for monitoring the tension and quality of a Method and apparatus for monitoring the tension and quality of a

1990-06-01

1991-05-28

Myracle, Jerry W.

Measuring and testing

Specimen stress or strain, or testing by stress or strain...

By loading of specimen

28187, G01N 308

Patent

active

050183907

ABSTRACT:
A method and apparatus for monitoring the yarn tension at each of a plurality of yarn processing stations is disclosed and wherein the mean value of the monitored tension is continuously determined at each station, and the differential between the monitored value and the mean value is also continuously determined. A first alarm signal is generated whenever the mean value leaves a predetermined tolerance range, and a second alarm signal is generated whenever the differential value leaves a second predetermined tolerance range. These alarm signals are logged, in both number and duration, to provide an indication of the quality of the yarn.

REFERENCES:
patent: 3729635 (1973-04-01), Shottenfeld et al.
patent: 3931938 (1976-01-01), Hasegawa et al.
patent: 3995417 (1976-12-01), Lumpert et al.
patent: 4685629 (1987-08-01), Sugioka
patent: 4720702 (1988-01-01), Martens
patent: 4720806 (1988-01-01), Schippers et al.
patent: 4774673 (1988-09-01), Aemmer
patent: 4828191 (1989-05-01), Ruge et al.

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