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

1975-09-08

1976-08-24

Petrakes, John

Textiles: spinning, twisting, and twining

Apparatus and processes

Web material

57 587, 57 5883, 57106, D01H 786, D01H 110

Patent

active

039758931

ABSTRACT:
In a textile yarn processing machine, such as a two-for-one twister or the like, having a plurality of spindle assemblies each including a driven rotor mechanism and a stationary yarn supply package carrier mechanism each defining therewithin joining elongate yarn passageways; the combination therewith is provided of pneumatically operated threading mechanisms for automatically threading yarn withdrawn from the supply package through the passageways and which is characterized by a construction which eliminates the necessity of predetermined positioning of the rotor mechanism for the threading operation and, preferably, provides for the supply of air under pressure thereto only through stationary spindle assembly components, as follows. A selectively operated, air injector nozzle is positioned at the juncture of the yarn passageways for creating an air suction through the carrier mechanism passageway and a jet of positive airflow through the rotor mechanism passageway for pneumatic threading of the yarn. Devices are provided for selectively supplying air under pressure, preferably through the stationary carrier mechanism, to the injector nozzle regardless of the position of the rotor mechanism.

REFERENCES:
patent: 2715308 (1955-08-01), Soussloff et al.
patent: 3552111 (1971-01-01), Treuss et al.
patent: 3636698 (1972-01-01), Nakahara et al.
patent: 3731478 (1973-05-01), Franzen
patent: 3820315 (1974-06-01), Franzen et al.

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