Yarn end loosening apparatus having adjustable height jet nozzle

Winding – tensioning – or guiding – Coil holder or support – Spool or core

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Details

B65H 5400, B65H 6706

Patent

active

052825817

ABSTRACT:
A yarn end loosening apparatus is provided for performing yarn end loosening operations on yarn packages. The yarn end loosening apparatus includes a chamber for directing streams of air relative to a yarn package disposed within the chamber to effect loosening of a yarn end from the yarn package. Additionally, the yarn end loosening apparatus includes an assembly for introducing air streams from, respectively, a taller package jet nozzle and a shorter package jet nozzle, the jet nozzles being spaced from one another to each direct a stream of air at the axial location of a type of yarn package having a predetermined axial length. Additionally, the yarn end loosening apparatus includes a device for selectively controlling the supply of air through the taller and shorter package jet nozzles such that only a selected one of the jet nozzles directs air into the chamber during a yarn end loosening operation.

REFERENCES:
patent: 3236464 (1966-02-01), Wey
patent: 3637148 (1972-01-01), Kupper
patent: 4009840 (1977-03-01), Muller
patent: 4921179 (1990-05-01), Surkamp et al.
patent: 5037036 (1991-08-01), Okuyama
patent: 5056726 (1991-10-01), Grecksch et al.

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