Spinning rotor for open-end spinning unit

Details Spinning rotor for open-end spinning unit Spinning rotor for open-end spinning unit

1976-06-28

1977-09-27

Petrakes, John

Textiles: spinning, twisting, and twining

Apparatus and processes

Unitary multiple twist devices

D01H 112

Patent

active

040502350

ABSTRACT:
In a spinning rotor for an open end spinning unit, the rotor being provided with a bore extending along its axis of rotation to accommodate a yarn extraction tube and being formed to define a fiber collection trough and an intake portion whose cross section widens in the direction toward the trough, the intake portion presenting a radially outwardly extending projecting portion which merges into and defines one boundary of the fiber collecting trough, the region where the projecting portion merges with the trough constituting the region of maximum diameter of the trough and the side of the trough opposite the projecting portion being defined by the spinning rotor bottom surface, the accumulation of dirt in the fiber collection trough is prevented by forming the collection trough so that the radially outermost end of the surface of the projecting portion defines the maximum diameter of the trough, imparting to the portion of the trough adjacent the rotor bottom surface a configuration such that the diameter of the trough in this region is less than the maximum diameter, and locating the projecting portion so that the axial distance between the rotor bottom surface and the radially innermost end of the projecting portion is between 1/16 and 1/6 of the maximum diameter of the fiber collecting trough.

REFERENCES:
patent: 3520122 (1970-07-01), Shepherd
patent: 3604194 (1971-09-01), Edagawa et al.
patent: 3798887 (1974-03-01), LeChatelier
patent: 3812667 (1974-05-01), Marsalek et al.
patent: 3822541 (1974-07-01), Croasdale et al.
patent: 3844100 (1974-10-01), Croasdale et al.

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