Textiles: spinning – twisting – and twining – Apparatus and processes – Covering or wrapping
Patent
1979-03-30
1981-02-10
Petrakes, John
Textiles: spinning, twisting, and twining
Apparatus and processes
Covering or wrapping
57 6, 57 5895, D01H 112, D02G 336
Patent
active
042493684
ABSTRACT:
Apparatus for manufacturing a yarn comprises two juxtaposed, closely spaced apart vacuum drums, which rotate in the same sense and have vacuum zones that adjoin the triangular space between the drum. A drawing frame delivers a drawn sliver at one end of said drums to said triangular space, in which the sliver is twisted to form a yarn, which is then withdrawn by means provided at the opposite end of the drums. To ensure a uniform quality of the yarn and to enable the yarn to be withdrawn at high speed, at least one additional roller drawing frame is provided, which has a delivery end disposed over the triangular space and can be operated to deliver wrapping fibers in the form of at least one stream of drawn fibers moving transversely to the longitudinal direction of the drums to the sliver, which extends in the longitudinal direction of the drums.
REFERENCES:
patent: 3981137 (1976-09-01), Fehrer
patent: 4056924 (1977-11-01), Umiastowski
patent: 4067181 (1978-01-01), Fehrer
patent: 4070811 (1978-01-01), Fehrer
patent: 4107909 (1978-08-01), Fehrer et al.
patent: 4130983 (1978-12-01), Dammann et al.
Kelman Kurt
Petrakes John
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