Apparatus for piecing-up a wrap yarn

US4391089A · kind A · utility

Assignee

• Schubert & Salzer · DE

Inventors

• Werner Billner · Ingolstadt, DE
• Erich Bock · Ingolstadt, DE

Key dates

• Filing date: May 22, 1981
• Grant date: Jul 5, 1983
• Expiry date: May 22, 2001

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D01H15/00
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

An apparatus for aiding in piecing-up wrapped yarn on a yarn wrapping device which includes a hollow spindle upon which a bobbin of wrapping thread is carried. A pair of delivery rolls feeds a fiber bundle F through a fiber feed channel 8 provided in a pot carried on top of a housing which encloses the hollow spindle and bobbin. Holes 73 are provided in the downwardly extending projections of the pot so that in normal operation air flows through the housing and out of the holes 73. However, upon piecing-up of the yarn, the pot is depressed closing the holes 73 and 61 allowing the air flow to flow at its maximum through the feed channel out of a suction duct 9. This increased suction through suction duct 9 causes the fiber bundle F, the wrapping yarn B, and wrapped yarn G to be sucked thereinto for being pieced-up.