Abstract: The disclosed method and apparatus for setting a workpiece correctly on a skirt-zipper sewing machine provides a pair of pressing plates which are positioned at the center of a zipper when the plates are lowered and which press the material of the workpiece and the zipper to be sewed to it.Each pressing plate works as a guide to set the to-be-sewn section of the workpiece at the center line of the zipper. The plates are then raised and again lowered to press the workpiece so that shrink marks that occur in bias curved sections of the workpiece are stretched. In this manner, a zipper is sewed to the workpice without shrink marks.

Abstract: An apparatus installed on a sewing machine for automatically turning over a garment flap during zipper stitching first descends such that a flap lever which turns the flap over is positioned closely beside the flap, and second the flap lever is rotated laterally. The flap lever securely turns over the flap without being lifted unnecessarily higher, and the initial position of the flap lever is high enough to not obstruct the setting work of workpiece. A pneumatic cylinder successively causes the above described actions.

Abstract: An alignment apparatus for setting a workpiece on a zipper sewing machine including a workpiece presser arm having surface projections which contact with internal micro-switches of a ring-like side plate which receives and faces the workpiece presser unit. The presence or absence of the surface projections in relation to the micro-switches creates variations in signals which are effective to select the required sewing pattern.

Abstract: The disclosed method and apparatus for setting a workpiece correctly on a skirt-zipper sewing machine provides a pair of pressing plates which are positioned at the center of a zipper when the plates are lowered and which press the material of the workpiece and the zipper to be sewed to it.Each pressing plate works as a guide to set the to-be-sewn section of the workpiece at the center line of the zipper. The plates are then rasied and again lowered to press the workpiece so that shrink marks that occur in bias curved sections of the workpiece are stretched. In this manner, a zipper is sewed to the workpiece without shrink marks.

Abstract: A method and apparatus for attaching a zipper when a zipper is attached to a garment which provides a flap to cover the zipper attached thereto, conducted such that a "perfect stitch" line appears on the garment surface and a "hitch stitch" line is covered by the garment flap. Thereby, the quality of stitching work is not degraded.