Yarn injection mechanism for cooperation with pneumatic yarn thr

Details Yarn injection mechanism for cooperation with pneumatic yarn thr Yarn injection mechanism for cooperation with pneumatic yarn thr

1977-10-17

1978-10-17

Watkins, Donald

Textiles: spinning, twisting, and twining

Apparatus and processes

Web material

57 587, 57106, 57 5883, D01H 1500, D01H 1304

Patent

active

041201426

ABSTRACT:
A pneumatic yarn injection mechanism is provided for being operatively associated with textile machines and particularly pneumatic threading mechanisms of spindle assemblies of textile yarn processing machines, such as two-for-one twisters. The pneumatic yarn injection mechanism is characterized by a construction for creating a suction therein for grasping a free end of yarn extending outwardly from a supply package of yarn in the spindle assembly of the textile machine and for creating a positive air stream therein for conveying the free end of yarn therefrom to a desired location in the spindle assembly of the textile machine for receipt by a suction air stream created by the pneumatic threading mechanisms for effecting threading-up of the spindle assembly and to eliminate manual handling of the free end of yarn during such pneumatic threading-up of the spindle assembly.

REFERENCES:
patent: 3424359 (1969-01-01), Houle et al.
patent: 3731478 (1973-05-01), Franzen
patent: 3834144 (1974-09-01), Franzen
patent: 3924392 (1975-12-01), Franzen et al.
patent: 3939633 (1976-02-01), Lossa
patent: 3942312 (1976-03-01), Venot
patent: 3975893 (1976-08-01), Franzen
patent: 3981128 (1976-09-01), Munker
patent: 4026095 (1977-05-01), Kobatake et al.

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