Method of and apparatus for detecting the degree of filling of s

Details Method of and apparatus for detecting the degree of filling of s Method of and apparatus for detecting the degree of filling of s

1986-07-31

1990-12-11

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

356387, G01N 2186

Patent

active

049773313

ABSTRACT:
Spool change in a spinning and twisting frame is triggered automatically by repetitively monitoring a row of spools with a light curtain and triggering the spool change when the measured diameter falls below the predetermined minimum value.

REFERENCES:
patent: 3505530 (1970-04-01), Reynolds et al.
patent: 3619628 (1971-11-01), Whitney
patent: 3922094 (1975-11-01), Colding et al.
patent: 4037103 (1977-07-01), Ryden Jr.
patent: 4120403 (1978-10-01), Stephanos
patent: 4648718 (1987-03-01), Sadamitsu et al.

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