Weft feeding device for weaving looms

Details Weft feeding device for weaving looms Weft feeding device for weaving looms

1988-03-10

1989-09-12

Hornsby, Harvey C.

Textiles: weaving

Weft manipulation

Weaving with stationary weft supply

242 4701, 242 4712, 356429, D03D 4736, G01N 2188

Patent

active

048650854

ABSTRACT:
A weft feeding device for weaving looms regulates the motor speed, according to the amount of yarn wound on the drum at least two photoelectric cells (11, 12) are provided one of which (11) checks the amount of yarn (3) wound on the drum (1), while the other (12) measures the transparency of the protection glass (15) provided on the cells. These photoelectric cells (11, 12) cooperate with an electronic circuit, which processes their signals (31, 32) in order to automatically compensate the transparency variations in the protection glass (15), thereby allowing a more uniform regulation of the motor speed of the weft feeding device.

REFERENCES:
patent: 3455341 (1969-07-01), Pfarrwaller et al.
patent: 3907440 (1975-09-01), Eichenberger et al.
patent: 4132368 (1979-01-01), Schiess et al.
patent: 4298172 (1981-11-01), Hellstrom
patent: 4405234 (1983-09-01), Juaire
patent: 4429723 (1984-02-01), Maroino
patent: 4529017 (1985-07-01), Suzuki et al.
patent: 4638840 (1987-01-01), Ghiardo et al.

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