Broken end piecing up apparatus for ring spinning frames

Details Broken end piecing up apparatus for ring spinning frames Broken end piecing up apparatus for ring spinning frames

1982-03-16

1984-10-23

Petrakes, John

Textiles: spinning, twisting, and twining

Apparatus and processes

Piecing up

57 88, D01H 1500

Patent

active

044780354

ABSTRACT:
A broken end piecing up apparatus for ring spinning frames having a servicing assembly propelled along the spinning frame. This servicing assembly comprises a pressurized housing which contains the mechanisms. An optical scanner is provided for detecting the absence of yarn on the corresponding bobbin and provision is made for positioning the apparatus in front of the spindle where the absence of yarn has been detected. The apparatus has a mechanism which then stops the broken end spindle and rotates it in the unwinding direction, withdrawing and picking up this broken end from the bobbin. Then a predetermined length of yarn is pulled out from this bobbin and fed through the corresponding ring traveller. The broken end is cut, combed and fed to the roving issuing from the drafting systems and the piecing up operation of both takes place. Then the servicing assembly moves on to detect a further absence of yarn.

REFERENCES:
patent: 3546870 (1970-12-01), Schewe et al.
patent: 3673780 (1972-07-01), Merck
patent: 3905187 (1975-09-01), Harmon et al.
patent: 3992864 (1976-11-01), Igel

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