Barmag Ag

Manfred Stuttem

Bernd Neumann

Ludger A Deters

Manfred Muller

A method of storing in a memory having a predetermined number of storage spaces signals representative of deviations in the tension continuously monitored in a plurality of strands of yarn running in a textile machine. The signals from the individual strands are sequentially fed into a memory and are initially stored in the available spaces. Once the memory is filled, the highest number of earlier stored signals is reduced by later signals being written over them.

Method and apparatus for storing error signals

In monitoring the yarn tension at each of a plurality of yarn processing stations, 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. In addition, an overall mean value is generated which is representative of an average of the mean value signals from all of the individual stations, and the overall mean value is compared with the individual mean value of each station. In the event the mean value signal at a particular station differs from the overall mean value signal by more than a predetermined tolerance limit, an alarm signal is generated.

Method and apparatus for monitoring yarn tension

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.

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Kurten, Germany

Manfred Stuttem