Method and apparatus for measuring the tension of an advancing y

Details Method and apparatus for measuring the tension of an advancing y Method and apparatus for measuring the tension of an advancing y

1990-06-04

1991-05-21

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

19 26, 57 81, 66163, 364552, G08B 2100

Patent

active

050179110

ABSTRACT:
A method and apparatus measures the tension of an advancing yarn which is subject to interruptions of the yarn path, resulting for example from the severance of the yarn. During such interruptions, the zero setting of the tension sensor does not always return to zero, thereby providing an erroneous output reading during subsequent yarn advancing cycles. In accordance with the present invention, a circuit is provided which identifies such errors and sounds an alarm when the error exceeds a predetermined limit. Also, the erroneous output signal is input as the zero point signal for the subsequent yarn advancing cycle, and during such subsequent cycle, the tension is determined on the basis of the newly set zero point.

REFERENCES:
patent: 3931938 (1976-01-01), Hasegawa et al.
patent: 4685629 (1987-08-01), Sugioka
patent: 4720702 (1988-01-01), Martens
patent: 4720806 (1988-01-01), Schippers et al.

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