Underbed thread trimmer for horizontal axis hooks

US4395961A · kind A · utility

Assignee

• The Singer Company Limited · US

Inventors

• Reinhold Papajewski
• Dietmar Polixa · Karlsruhe, DE

Key dates

• Filing date: Sep 3, 1981
• Grant date: Aug 2, 1983
• Expiry date: Sep 3, 2001

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D05B57/00
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A horizontal axis loop taker is actuated by a loop taker shaft supported in an eccentric opening in a rotatable bearing located immediately adjacent the loop taker. In a first position of the rotatable bearing, a sewing needle may extend through an orifice in a throat plate to cooperate with the loop taker in the formation of stitches. In a second position of the rotatable bearing achieved by rotating the bearing in a direction to locate the eccentric opening, and thereby the loop taker, further from the throat plate, the sewing needle will not cooperate with the loop taker. The increased clearance thus provided between the loop taker and throat plate will more readily accommodate thread severing devices.