Method and apparatus for detecting the presence of yarns

Details Method and apparatus for detecting the presence of yarns Method and apparatus for detecting the presence of yarns

1976-12-30

1978-05-09

Queisser, Richard C.

Measuring and testing

With fluid pressure

Dimension, shape, or size

G01B 1300, B65H 6302

Patent

active

040880109

ABSTRACT:
A method and apparatus for sensing the presence or absence of yarns using a simple airflow in an open slot formed between parallel plates, the pressure upstream of the proper yarn path being sensed. In one form, the pressure is sensed at multiple points and averaged to accommodate yarn oscillation.

REFERENCES:
patent: 3271997 (1966-09-01), Horne et al.
patent: 3635413 (1972-01-01), Gish
patent: 3769475 (1973-10-01), Czwakiel

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