Title: Thread drawoff tube for open-end spinning machines

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.

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Inventors: Egbers, Gerhard (Eningen, DT)
Artzt, Peter (Reutlingen, DT)

Application Number: 610662
Filing Date: 1975-09-05
Publication_date: 1977-03-15
Assignee: Schubert & Salzer Maschinenfabrik Aktiengesellschaft (Ingolstadt, DT)
Primary Class(es): 57/417
Other Classes:
US Patent Ref:

3640061	Feb, 1972	Landwehrkamp	57/58.
3834147	Sep, 1974	Havranek et al.	57/58.

Other Refs:
Primary Examiner: Queisser, Richard C.
Assistant Examiner: Gorenstein, Charles
Attorney: Beach; Robert W., Van Winkle; R. M.