Fibre opening apparatus for an open-end spinning machine

Details Fibre opening apparatus for an open-end spinning machine Fibre opening apparatus for an open-end spinning machine

1978-06-22

1979-10-02

Watkins, Donald

Textiles: spinning, twisting, and twining

Apparatus and processes

Unitary multiple twist devices

19112, D01H 112

Patent

active

041693485

ABSTRACT:
A fibre opening apparatus for an open-end spinning machine includes a housing provided with a recess in which is mounted for rotation a fibre opening roller. The peripheral surface of the opening roller co-operates with a fibre locating surface defined by the recess to form a fibre-conveying passage. The tips of each of a plurality of needles protruding from the peripheral surface terminates in an imaginary cylindrical surface and at equal distances from the fibre locating surface. The generatrix of the peripheral surface is concave.
Preferably, the opening roller has lateral side flanges and the generatrix is formed by an arc extending between the inner surfaces of the flanges and derived from a common radius. The chord of the arc may be co-incident with the generatrix of the imaginary cylindrical surface.
The generatrix of the peripheral surface may be formed by an arcuate central region which is joined to the inner surfaces by arcuate side regions.
The generatrix may be formed by a straight central region which is joined to the inner surfaces by inclined side regions.

REFERENCES:
patent: 3624997 (1971-12-01), Didek et al.
patent: 3750382 (1973-08-01), Minami et al.
patent: 3978646 (1976-09-01), Hoffman et al.
patent: 4058965 (1977-11-01), Shaw et al.

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