Broken yarn transfer mechanisms for textile yarn processing mach

Details Broken yarn transfer mechanisms for textile yarn processing mach Broken yarn transfer mechanisms for textile yarn processing mach

1978-05-31

1979-02-06

Petrakes, John

Textiles: spinning, twisting, and twining

Apparatus and processes

Piecing up

57305, 57 587, 242 355R, 242 356R, 242 356E, 57279, D01H 1500, B65H 5422

Patent

active

041377001

ABSTRACT:
In a textile yarn processing machine, such as a two-for-one twister or the like, there is provided a plurality of yarn processing stations each including a spindle assembly carrying a supply package of yarn to be processed and a take-up assembly for forming a take-up package of yarn after processing. A yarn knotter mechanism is selectively positioned in front of the yarn processing stations in the event of yarn breakage for knotting the ends of the broken yarn extending respectively from the spindle assembly and the take-up assembly. Improved yarn transfer mechanisms are provided for withdrawing the broken end of yarn from the take-up assembly and positioning the yarn in the knotter mechanism for being knotted with the broken end of yarn from the spindle assembly. These mechanisms include an uncoiling roller having a fiber attracting surface for being extended to engage the take-up package of yarn and unwind the broken end of yarn therefrom and wind a predetermined amount of the broken end of yarn onto the uncoiling roller, and a yarn transfer wand for engaging the yarn extending between the uncoiling roller and the take-up package for transferring the yarn by movement thereof while unwinding the yarn from the uncoiling roller to the knotter mechanism.

REFERENCES:
patent: 2208930 (1940-07-01), Kahlisch
patent: 2238923 (1941-04-01), Abbott
patent: 3478504 (1969-11-01), Nimtz et al.
patent: 3546870 (1970-12-01), Schewe et al.
patent: 3628320 (1971-12-01), Harmon
patent: 3820315 (1974-06-01), Franzen et al.
patent: 3842580 (1974-10-01), Franzen
patent: 3975893 (1976-08-01), Franzen
patent: 4047674 (1977-09-01), Kamp

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