Formation of a reserve winding thread of defined length on bobbins of a textile machine

US4093133A · kind A · utility

Assignee

• Fried Krupp · DE

Inventors

• Herbert Hoffmann · Hennigsdorf, DE
• Friedrich Wachendorf

Key dates

• Filing date: Sep 15, 1976
• Grant date: Jun 6, 1978
• Expiry date: Sep 15, 1996

Classification

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

Abstract

In a method and apparatus for winding yarn onto a bobbin in a textile machine in a manner to form a reserve winding at one end of the bobbin, the yarn forming the reserve winding is given an accurately determined length by drawing a length of yarn greater than the predetermined length into a suction device before commencing winding of a bobbin and then cutting the yarn at a predetermined point beyond the inlet end of the suction device at a time bearing a fixed relation to the catching of the yarn by a catch element associated with the bobbin. The timing of the cutting operation is controlled by monitoring the instant at which the inlet end of the suction device is moved to a position at which the yarn can be caught by the catch element.