Textiles: spinning – twisting – and twining – Apparatus and processes – Open end spinning
Patent
1987-12-29
1988-10-25
Petrakes, John
Textiles: spinning, twisting, and twining
Apparatus and processes
Open end spinning
57 5, 57408, 57411, D01H 1135, D01H 7898
Patent
active
047794100
ABSTRACT:
An apparatus for making a yarn (6) comprises two juxtaposed, closely spaced apart twisting drums (1, 2), which rotate in the same sense and between themselves define a generally triangular twisting space (4), to which a vacuum is applied, fiber-feeding means and withdrawing means (7) for withdrawing the yarn (6) which has been formed in that the fibers fed to said twisting space have been twisted together in said twisting space. In order to effect a winding of covering fibers around a core of the yarn being formed, the fiber-feeding means comprise a feed roller, which procedes the twisting drums (1, 2) and is aligned with the triangular twisting space (6) in its longitudinal direction and has an axis of rotation that extends transversely to the center plane between the two twisting drums (1, 2), and the feed roller comprises a peripheral region (12) to which a vacuum is applied and a blasting region (14), which is axially disposed beside said peripheral region and faces the triangular twisting space (4) and in which a partial stream of fibers is formed.
REFERENCES:
patent: 4524580 (1985-06-01), Fehrer
patent: 4570434 (1986-02-01), Stahlecker
patent: 4574572 (1986-03-01), Fehrer
patent: 4601167 (1986-07-01), Fuchs
patent: 4628679 (1986-12-01), Stalder et al.
patent: 4640090 (1987-02-01), Lembeck
Kelman Kurt
Petrakes John
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