Latch needle comprising a relieved latch shank

US6574995B2 · kind B2 · utility

Assignee

• Groz-Beckert · DE

Inventors

• Manfred Sauter · Ebingen, DE
• Karl-Heinz Mattes · West Brome, CA

Key dates

• Filing date: Apr 1, 2002
• Grant date: Jun 10, 2003
• Expiry date: Apr 1, 2022

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D04B35/04
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

The improved latch needle (1) is provided with a latch (5) having a latch shaft (11) with side surfaces (21, 22), which are divided into surface areas (23, 24) that are offset against each other and/or are arranged at an angle to each other. As a result, the thickness of latch (5) measured in the direction of its rotational axis (27) is slightly larger than the thickness in the shaft region (43), particularly at a location (45) in the area of transition from the latch shaft (11) to the latch spoon (16). On the other hand, the location (43) is close to the hook-side opening of the latch slot (6). By reducing the width, particularly in this region, the easy movement of latch (5) is ensured even if dust or dirt enter the latch slot (6) or are deposited on the side surfaces (21, 22).