Textiles: spinning – twisting – and twining – Apparatus and processes – Open end spinning
Patent
1988-03-11
1989-08-08
Hail, III, Joseph J.
Textiles: spinning, twisting, and twining
Apparatus and processes
Open end spinning
57409, D01H 7882
Patent
active
048541184
ABSTRACT:
The method of, and apparatus for, producing a yarn uses a friction spinning device comprising a perforated first friction spinning drum and a second friction spinning drum which can also be perforated. Two fiber feed passages project to the first friction spinning drum and are each supplied by opening assemblies which individualize or individually separate the fibers. The fibers are transported toward the first friction spinning drum using a feed air stream in the fiber feed passages. This feed air stream is produced by the first friction spinning drum which is maintained under sub-pressure. Advantageously, the fiber double-feed to the friction spinning drum permits supplying two different fiber types to the same yarn end. Also, different inclinations of the fibers at the friction spinning drum can be obtained by different inclinations of the fiber feed passages in order to produce yarns of different character. The first and second friction spinning drums can be each divided into cooperating drum sections to define a first pair of coacting drum sections and spaced therefrom a second pair of coacting drum sections. The respective pairs of drum sections can be operated at different rotational speeds and can be subjected to different vacuum conditions.
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Briner Emil
Keller Urs
Stalder Herbert
Hail III Joseph J.
Kleeman Werner W.
Rieter Machine Works Ltd.
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