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

1975-03-18

1977-05-17

Queisser, Richard C.

Measuring and testing

With fluid pressure

Dimension, shape, or size

73160, 242 37R, G01B 1300, B65H 6302

Patent

active

040233995

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 presence 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: 3585844 (1971-06-01), Dornseiffen
patent: 3635413 (1972-01-01), Gish
patent: 3769475 (1973-10-01), Czwakiel

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