Textiles: spinning – twisting – and twining – Apparatus and processes – Covering or wrapping
Patent
1990-01-24
1990-10-09
Petrakes, John
Textiles: spinning, twisting, and twining
Apparatus and processes
Covering or wrapping
57 6, 57210, 57315, 57352, D02G 336, D02G 338, D01H 1304
Patent
active
049613065
ABSTRACT:
A core/wrap yarn forming system comprising two or more channels extending outwardly from the nip of the front draft rolls of a ring-spinning system; wherein each channel's entrance is closely adjacent to the nip; wherein the entrances are spaced apart from one another; wherein the channels merge with one another at the exit from the device; wherein the first channel is essentially straight throughout its length, and is perpendicular to the nip; wherein each of the other channels is curved to guide the strand therein in a convex pathway with respect to the first channel, and converge inward to the end of the first channel. The core is supplied through the straight channel, while one or more wrapping strands pass through the curved channel or channels, and wrap around the core where all the channels merge. The wrapped yarn then is passed to an ordinary ring traveler and wind-up spindle of a ring-spinning assembly. In this manner, unwrapped roving is converted to core/wrap yarn in a single draft stage in a continuous process on a ring-spinning frame.
REFERENCES:
patent: 2859583 (1958-11-01), Parker
patent: 3255579 (1966-06-01), Price
patent: 3370410 (1968-02-01), McKew et al.
patent: 3778988 (1973-12-01), White et al.
patent: 4368611 (1983-01-01), Mainka et al.
patent: 4519195 (1985-05-01), Belin et al.
Folk Craig L.
Kimmel Linda B.
Robert Kearny Q.
Sawhney A. Paul S.
Fado John D.
Petrakes John
Silverstein M. Howard
The United States of America as represented by the Secretary of
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