Device for disabling and enabling stitching needles in a quiltin

Details Device for disabling and enabling stitching needles in a quiltin Device for disabling and enabling stitching needles in a quiltin

1989-11-21

1991-04-09

Nerbun, Peter

Sewing

Special machines

Quilting

112163, 112221, 112254, D05B 1100, D05B 2100

Patent

active

050054996

ABSTRACT:
A device for disabling and enabling one or more needles in a quilting machine, a multi-needle embroidery machine, or the like, is described.
The device comprises a linear actuator (24) adapted to carry a needle (22) and to keep the latter, for a predetermined time, in a raised position relative to fabric (10) to be sewn.
The device includes stitching yarn (44) return means (38) being actuated when needle (22) is disabled, in order to subject to a limited tension the portion of stitching yarn located between the disabled needle and the fabric to be sewn, to prevent the yarn from becoming tangled and from breaking.
Furthermore, during the entire operating stage as mentioned above, the known yarn tensioning device (48) through which the stitching yarn is led before arriving at the needle, is disabled.

REFERENCES:
patent: 4262613 (1981-04-01), Landoni
patent: 4501208 (1985-02-01), Landoni
patent: 4776291 (1988-10-01), Tajima et al.

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