MAQUINA RETROCEDORA DE DOBLE TORSION.

摘要

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.