Photoelectrical bobbin feeler

Details Photoelectrical bobbin feeler Photoelectrical bobbin feeler

1980-02-22

1981-07-07

Jaudon, Henry

Textiles: weaving

Weft manipulation

Replenishing

250571, 250577, 250561, D03D 4512

Patent

active

042769108

ABSTRACT:
A photoelectrical bobbin feeler, in particular weft bobbin feeler, comprises one light source and two light sensors, or vice versa, two light sources and one light sensor. At least one polaroid filter is arranged in front of the one light source, or one light sensor, respectively, for polarizing the light which is specularly as well as diffusely reflected from the bobbin, and provides for a safer detection of the "bobbin empty" condition.

REFERENCES:
patent: 3693671 (1972-09-01), Desai
patent: 3777168 (1973-12-01), Sansone
patent: 3892492 (1975-07-01), Eichenberger

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