Sewing-machine guide for edge-parallel seaming of a workpiece

US4227471A · kind A · utility

Assignee

• Durkoppwerke GmbH Bielefeld · DE

Inventors

• Harald Collbrunn · Spenge, DE
• Franz Hannemann · Detmold, DE
• Heinz Fransing · Melle, DE

Key dates

• Filing date: Jun 9, 1978
• Grant date: Oct 14, 1980
• Expiry date: Jun 9, 1998

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D05D2207/02
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A system for the edge-parallel sewing of a workpiece, consisting of a plurality of layers, together to form a seam, e.g. in the production of trouser legs, pockets, shirts and the like, comprises a workpiece guide in the region of the needle path and formed with separators interposed between the layers, and a drag-clamping device which engages a portion of the stack of fabric layers remote from the incipient stitching operation to apply a stretching or drag force thereto. According to the invention, a retracting device is provided which, upon approach of the drag clamp to the stitching location, withdraws the guide device out of the path of the clamp.