Pneumatically operated yarn threading mechanisms for textile yar

Details Pneumatically operated yarn threading mechanisms for textile yar Pneumatically operated yarn threading mechanisms for textile yar

1978-07-19

1979-08-14

Petrakes, John

Textiles: spinning, twisting, and twining

Apparatus and processes

Threading up

57 587, 57 5883, D01H 786, D01H 1500

Patent

active

041641159

ABSTRACT:
Improved pneumatically operated yarn threading mechanisms are provided for textile yarn processing machines, such as a two-for-one twister or the like, having spindle assemblies each including a rotor mechanism with a yarn passageway extending along the axis of the spindle assembly and radially out, a stationary carrier mechanism carrying a hollow yarn supply package and including a hollow hub portion extending through the yarn package with a yarn passageway extending along the axis of the spindle assembly and joining with the rotor mechanism yarn passageway. The threading mechanisms automatically thread yarn withdrawn from the supply package through the passageways and includes air injector nozzle positioned at the juncture of the yarn passageways for selectively creating an air suction and positive air jet through the respective yarn passageways and an air duct for selectively supplying air under pressure to the injector nozzle from an air supply connector moved into and out of connection therewith. The air duct extends from the injector nozzle substantially parallel with the carrier mechanism yarn passageway to its outer end generally at the zone of the outer end of the yarn supply package.

REFERENCES:
patent: 2715308 (1955-08-01), Soussloff et al.
patent: 3552111 (1971-01-01), Treus et al.
patent: 3731478 (1973-05-01), Franzen
patent: 3975893 (1976-08-01), Franzen

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