Speed control for weft feed spool in weaving looms

Details Speed control for weft feed spool in weaving looms Speed control for weft feed spool in weaving looms

1985-08-13

1987-12-29

Hornsby, Harvey C.

Textiles: weaving

Weft manipulation

Weaving with stationary weft supply

242 4701, D03D 4736, B65H 5120

Patent

active

047154110

ABSTRACT:
A method to control the speed of the weft feed spool in weaving looms includes feeding at least two items of detected data related to weft delivery and supply, and loom operation, into a control mechanism, and using the data to calculate as a number of windings, the variation of the weft length reserve from the average minimum desired weft length reserve as determined by an average weft length reserve sensor and adjusting the speed of the feed spool in response to such calculations. A maximum weft length detector may be used as a control for the feed spool as well as a sensor for the time and number of unwindings of weft from the feed spool.

REFERENCES:
patent: 3225446 (1965-12-01), Sarfati et al.
patent: 3411548 (1968-11-01), Pfarrwaller
patent: 4226379 (1980-10-01), Brouwer et al.
patent: 4298172 (1981-11-01), Hellstrom
patent: 4541462 (1985-09-01), Tholander
patent: 4556088 (1985-12-01), Tanaka et al.
patent: 4558723 (1985-12-01), Tanaka et al.
patent: 4595039 (1986-06-01), Tholander
patent: 4617971 (1986-10-01), Hellstroem

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