Open end rotor for a spinning machine

Textiles: spinning – twisting – and twining – Apparatus and processes – Unitary multiple twist devices

Patent

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Details

D01H 1135

Patent

active

042990840

ABSTRACT:
A spinning machine is disclosed, which generally comprises a spinning rotor having a frusto-connical fiber sliding surface consisting of a first fiber sliding portion, onto which discrete fibers are first supplied, and a second fiber sliding portion connected to the first fiber sliding portion, a bottom surface, and a fiber collecting groove formed between the second fiber sliding portion and the bottom surface. The spinning machine further comprises a yarn take-up tube centrally extending into the spinning rotor to take up a spun yarn therethrough.
The first fiber sliding portion forms an angle (.alpha.) with a plane of rotation of the spinning rotor larger than an angle (.beta.) formed by the second fiber sliding portion with respect to the same plane. The bottom surface of the spinning rotor includes a fiber guide portion, which forms the fiber collecting groove in cooperation with the second fiber sliding portion and is inclined at an angle (.delta.) with respect to the plane of rotation. This angle (.delta.) is so selected as to fulfill the condition .delta.=.epsilon..+-. about 5.degree., where angle .epsilon. is a measure of the inclination of the yarn taking off line, with respect to the plane of rotation, connecting the lowermost point of the yarn take-up tube with an intersection of the second fiber sliding portion and the fiber guide portion.

REFERENCES:
patent: 3520122 (1970-07-01), Shepherd
patent: 3812667 (1974-05-01), Marsalek et al.
patent: 3822541 (1974-07-01), Croasdale et al.
patent: 4058964 (1977-11-01), Stalder
patent: 4237682 (1980-12-01), Miyamoto

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