Thread signal emitter

Details Thread signal emitter Thread signal emitter

1988-05-18

1989-12-05

Gilreath, Stanley N.

Winding, tensioning, or guiding

Strand tensioning device

Alarm or indicator

242 36, 242 37R, 242 49, 242149, 242150R, B65H 5920, B65H 6302

Patent

active

048847631

ABSTRACT:
The disclosure relates to an apparatus for generating an electric signal corresponding to thread movement in a thread brake in textile machines of different types. A transducer element (9, 21) of piezoelectric type is disposed in direct contact with an element (3, 18) included in the brake and, by the intermediary of a further element included in the brake, or directly, is in contact with that thread (13) which is to be braked and sensed, so that movements which occur in the thread (13) on braking thereof shall be transmitted to the transducer element (9, 21) and the electric signal corresponding to thread movements is impressed on a monitoring circuit for indication of whether the signal ceases during a period of time when the signal should exist. It is possible to arrest the operation of the machine upon loss of the signal.

REFERENCES:
patent: 2222847 (1940-11-01), Kent
patent: 3561689 (1971-02-01), Morgan
patent: 3650717 (1972-03-01), Canfield
patent: 3819097 (1974-06-01), Stritzko
patent: 4256247 (1981-03-01), Loepfe
patent: 4455549 (1984-06-01), Rydborn
A. M. Isley and G. E. Mock, Tensiometer, Western Electric Technical Digest No. 36, Oct. 1974, pp. 21, 22.

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