Air nozzle for producing fancy yarn

Details Air nozzle for producing fancy yarn Air nozzle for producing fancy yarn

1983-04-22

1984-09-04

Petrakes, John

Textiles: spinning, twisting, and twining

Apparatus and processes

False twist device

57 6, 57350, D02G 334

Patent

active

044689217

ABSTRACT:
An air nozzle for producing a sheath-core type fancy yarn, comprising a hollow cylindrical nozzle body in which a vortex occurs around an axis thereof due to a suction flow of a subatmospheric pressure source. Within the nozzle body a conical cap and a ring body are arranged in series. A sheath yarn is overfed into the nozzle body in the tangential direction to the inner surface of the body and wraps around the conical cap to form a plurality of loops due to the vortex, then entangles a core yarn running straight through the nozzle body. Since an outer surface of the conical cap and a central opening of the ring body guide the vortex smoothly along a yarn path, a fancy yarn having uniformly and tightly entangled loops can be obtained.

REFERENCES:
patent: 3336753 (1967-08-01), Marshall
patent: 3403501 (1968-10-01), Nuissl
patent: 3438186 (1969-04-01), Marshall
patent: 3568424 (1971-03-01), Marshall
patent: 3812665 (1974-05-01), Holland
patent: 4073129 (1978-02-01), Ostrowski et al.
patent: 4077197 (1978-03-01), Bowden et al.

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