Sewn part transfer device for a sewing machine

Details Sewn part transfer device for a sewing machine Sewn part transfer device for a sewing machine

1985-05-24

1987-04-21

Schroeder, Werner H.

Sewing

Special machines

Article attaching

11212115, D05B 318, D05B 3100

Patent

active

046587403

ABSTRACT:
In a sewing machine, particularly one useful for producing piped pockets, wherein the pieces to be sewn to a workpiece include a slide fastener or zipper, a transfer device for transferring the slide fastener containing sewn pieces to the workpiece is provided. The transfer device includes a grip-fold stamp which is vertically movable toward the piece to be sewn which is held over a plate by vacuum, with the slide fastener held in a pocket of the plate. The grip-fold stamp is moved down to the plate and holds the area of the sewn piece adjacent to the slide fastener. A clamping strap on the grip-fold stamp is movable by an appropriate servoelement, either electromagnetic or air pressure cylinder, into the pocket in the plate and beneath the slide fastener for holding the sewn piece at the slide fastener at the underside of the grip-fold stamp. The clamping strap may be an arcuate piece that is shifted around the circular front of the grip-hold stamp to its clamping position or it may be a pivotally supported part which pivots to its clamping and releasing position. The clamping strap moves toward and with respect to a guide fixed to the underside for the grip-fold stamp.

REFERENCES:
patent: 3762347 (1973-10-01), Sesselmann et al.
patent: 3974785 (1976-08-01), Pickert et al.
patent: 4173191 (1979-11-01), Taddicken
patent: 4262612 (1981-04-01), Schips
patent: 4362116 (1982-12-01), Sen Gupta et al.
patent: 4384539 (1983-05-01), Scagnelli et al.
patent: 4497270 (1983-09-01), Boser

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