Warp-knitting machine with at least one guide bar

Details Warp-knitting machine with at least one guide bar Warp-knitting machine with at least one guide bar

1994-10-31

1996-02-20

Calvert, John J.

Textiles: knitting

United needle machines

Straight

D04B 2732

Patent

active

054919886

ABSTRACT:
In a warp-knitting machine with jacquard control, guide needles (1) are fastened to a guide bar (6) by means of carrier strips (3) which are bendable by at least one piezoelectric bending transducer. Each carrier strip (3) consists of electrically insulating material. The strip carries on at least one side, a layering consisting of (a) an inner electrode (8 to 11), (b) a piezoelectrically active layer (15, 17) covering the latter and (c) an outer electrode (16, 18). A control circuit (29) selectively supplies the inner electrode (8 to 11) with control voltage, while the outer electrode (16, 18) is connected to a reference potential. A contact-protected Jacquard control operated piezoelectrically is obtained in this way.

REFERENCES:
patent: 3144522 (1964-08-01), Bernstein
patent: 3297889 (1967-01-01), Breskend
patent: 3712962 (1973-01-01), Epley
patent: 4099211 (1978-07-01), Hathaway
patent: 4565940 (1986-01-01), Hubbard, Jr.
patent: 4786837 (1988-11-01), Kalnin et al.
patent: 4988908 (1991-01-01), Langton
patent: 5034649 (1991-07-01), Chida et al.

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