Damaged needle detector with single needle sensor

Details Damaged needle detector with single needle sensor Damaged needle detector with single needle sensor

1975-04-28

1976-10-26

Stein, Mervin

Textiles: knitting

Stopping

324 82, D04B 3518

Patent

active

039876497

ABSTRACT:
A detection and control apparatus for a textile machine having a coil through the field of which the machine needles pass individually and a pair of coupled oscillators operating in frequency step with the phase change due to a broken or damaged needle passing through the field of the coil detected as the modulation on the oscillation to control stopping the machine.

REFERENCES:
patent: 3222664 (1965-12-01), Premact
patent: 3345563 (1967-10-01), Wood
patent: 3492564 (1970-01-01), Baker
patent: 3588686 (1971-06-01), Lingmann
patent: 3646542 (1972-02-01), Anthony
patent: 3690127 (1972-09-01), Tellerman et al.
patent: 3854084 (1974-12-01), Parker
patent: 3872380 (1975-03-01), Gardiner
Beeler, C., Finding Buried Stuff, In Radio-Electronics, pp. 42-43, Apr. 1966.

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