Patent · US Expired

Thread drawoff tube for open-end spinning machines

US4011712A · kind A · utility

6Cited by

2References

4Claims

0Family size

Assignee

Schubert & Salzer Maschinenfabrik AG · DE

Inventors

Gerhard Egbers · Reutlingen, DE
Peter Artzt · Reutlingen, DE

Key dates

Filing date	Sep 5, 1975
Grant date	Mar 15, 1977
Priority date	—
Expiry date	Sep 5, 1995

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD01H4/08
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

Transmission of the thread twist-forming force to the thread end is facilitated by a finger mounted eccentrically in the bore of the thread drawoff tube. The thread, which is rotated about the circumference of the bore, periodically engages the finger, which finger plucks the thread away from the tube wall and momentarily relieves the bearing force between the thread and the drawoff tube at the tube infeed end. The finger is spaced inwardly from the tube infeed end and may be a pin projecting radially inward from the tube wall or an offset wire extending parallel to but eccentrically of the tube axis.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.