Device for continuously measuring a transverse dimension of a th

Details Device for continuously measuring a transverse dimension of a th Device for continuously measuring a transverse dimension of a th

1979-12-10

1981-10-13

Punter, William H.

Optics: measuring and testing

By configuration comparison

With photosensitive film or plate

250559, 356429, G01B 1110, G01B 1102

Patent

active

042945453

ABSTRACT:
A device for measuring the instantaneous value of the diameter or other transverse dimension of a traveling yarn comprises a linear array of photoelectric sensors and an electronic measuring device for scanning the sensors and digitally processing the electrical scanning signals in serial form. The ground signal indicative of the condition "no yarn present" is eliminated by means for intermediately storing the scanning signal, means for delaying the latter and storing the delayed signal, and subtracting the stored undelayed signal from the delayed signal such as to eliminate the ground signal and to furnish a pure yarn signal representative of the yarn diameter.

REFERENCES:
patent: 3258529 (1966-06-01), Parrish et al.
patent: 3987244 (1976-10-01), Messman
patent: 4046536 (1977-09-01), Smithgall
patent: 4173788 (1979-11-01), Laliotis
patent: 4207593 (1980-06-01), Deutsch et al.

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