Drive and control device for sewing machines, automatic sewing installations, and the like

US4602577A · kind A · utility

Assignee

• Quick-Rotan Elektromotoren GmbH · DE

Inventors

• Peter Kothe · Pfungstadt, DE
• Wolfgang Angersbach · Darmstadt, DE
• Dan-Corneliu Raducanu · Bad Soden, DE
• Peter Schuler · Karlsruhe, DE
• Michaeal Luft · Seeheim-Jugenheim, DE

Key dates

• Filing date: Jul 26, 1983
• Grant date: Jul 29, 1986
• Expiry date: Jul 26, 2003

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D05B69/20
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A drive and control device for sewing machines, automatic sewing installations, and the like, with a recognition unit which responds for the purpose of end recognition when the sewing tools have approached a predetermined spacing from the desired seam end. The drive and control device also includes a preselection stitch counting unit, which can be triggered by means of the recognition unit, for the presetting of a predetermined number of remaining stitches still to be executed subsequently to the end recognition, and a correction unit for the performance of a stitch correction in dependence on the respective needle position at the instant of end recognition. The correction unit serves for automatically varying the length of at least one of the remaining stitches.