Automatic piecing of combination open end rotor spun yarn

Details Automatic piecing of combination open end rotor spun yarn Automatic piecing of combination open end rotor spun yarn

1988-03-07

1988-12-06

Petrakes, John

Textiles: spinning, twisting, and twining

Apparatus and processes

Piecing up

57 5, 57202, 57408, D01H 1502, D02G 338

Patent

active

047888172

ABSTRACT:
An improved method and apparatus for stringing up or re-stringing a balanced ply-twisted combination yarn of two components to insure strong piecing-up points. The end of the combination yarn and the end of a continuous filament yarn, which becomes a component of the combination yarn, are both prepared for piecing and inserted into the rotor of an open-end spinning device. Upon start up, the combination yarn engages staple fibers in the rotor consolidating groove while the continuous filament yarn engages the combination yarn within the rotor without any contact of the continuous filament yarn with the rotor consolidating groove.

REFERENCES:
patent: 3445993 (1969-05-01), Vorisek
patent: 4022011 (1977-05-01), Hirai
patent: 4083173 (1978-04-01), Artzt et al.
patent: 4221110 (1980-09-01), Smith
patent: 4302925 (1981-12-01), Edagawa et al.
patent: 4489544 (1984-12-01), Morita et al.
patent: 4729214 (1988-03-01), Yngve et al.

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