Device for monitoring yarn motion on a textile machine

Details Device for monitoring yarn motion on a textile machine Device for monitoring yarn motion on a textile machine

1980-06-23

1982-09-14

Heyman, John S.

328140, 57352, H03K 906

Patent

active

043497845

ABSTRACT:
An electronic circuitry for evaluating electrical sensing signals furnished by a sensing device responsive to ballooning motion of a yarn in a textile machine and delivering a series of high frequency pulses having a repetition rate corresponding to the low frequency of the ballooning motion, comprises a series arrangement of an A.C.-amplifier, a rectifier, a low-pass filter having an upper cut-off frequency smaller than said high frequency but greater than the low frequency of the ballooning motion, and a frequency discriminator made up of a high-pass filter and integrator, and a final stage to either indicate improper yarn ballooning or disable the machine operation.

REFERENCES:
patent: 3231823 (1966-01-01), Garfield et al.
patent: 3545258 (1970-12-01), Judd
patent: 3581220 (1971-05-01), Bell et al.
patent: 3942095 (1976-03-01), Togneri et al.

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