Method and apparatus for removing an irregularity in a thread

US4356692A · kind A · utility

Assignee

• Schubert & Salzer · DE

Inventors

• Rupert Karl · Ingolstadt, DE
• Walter Mayer · Ingolstadt, DE
• Edmund Schuller · Ingolstadt, DE
• Erwin Braun · Ingolstadt, DE

Key dates

• Filing date: Sep 26, 1980
• Grant date: Nov 2, 1982
• Expiry date: Sep 26, 2000

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B65H2701/31
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

The method and apparatus for removing irregularities in a thread being produced on a machine as the thread is traveling to a takeup device. A thread reserve having a suction applied thereto causing a loop to be formed therein which contains said irregularity. An additional pair of loops are formed in said thread, one above and one below the thread reserve. The loop formed in the end of the thread reserve is severed from the thread and the two remaining loops are inserted into a thread joining device. A thread suction extractor associated with the thread joining device pulls the end portions of the pair of loops taut permitting the joining operation to take place and, after joining of the thread, removing the separated ends. The thread reserve is provided with mechanism for maintaining the loop of thread extending therein separated and for severing and removing the portion of the loop containing the irregularity from the thread.