Control of weft thread insertion

Details Control of weft thread insertion Control of weft thread insertion

1982-07-14

1984-04-17

Feldbaum, Ronald

Textiles: knitting

United needle machines

Straight

D04B 2306

Patent

active

044426844

ABSTRACT:
A weft thread insertion magazine in a warp knitting machine has a pair of separated forwarding chains driven by a drive arrangement. These forwarding chains each have equidistant holders for holding transversely placed weft threads. The drive arrangement can provide the forwarding chains with a lower speed than the normal speed at which weft threads are provided to the needles, that is, at a rate less than one thread per needle cycle. In particular the drive shaft of the warp knitting machine may be connected to the forwarding chains by means of a revolution reducing arrangement. A control arrangement regulates the separation of at least the first weft thread from the others following and the presentation of this first one into the vicinity of the knitting needles. This control arrangement comprises either a weft thread presenter, a weft thread deflector or a combination of both. The control mechanism only activates the weft thread presentation or deflection during a portion of the appropriate needle cycle. In this manner the pattern repeat can be substantially increased.

REFERENCES:
patent: 3705503 (1972-12-01), Skopalik et al.
patent: 3771330 (1973-11-01), Carman
patent: 3774414 (1973-11-01), Vogel
patent: 3797278 (1974-03-01), Kohl
patent: 4220020 (1980-09-01), Kohl
patent: 4255947 (1981-03-01), Kohl
patent: 4348876 (1982-09-01), Roth

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