Textiles: spinning – twisting – and twining – Apparatus and processes – Piecing up
Patent
1978-02-03
1979-05-22
Petrakes, John
Textiles: spinning, twisting, and twining
Apparatus and processes
Piecing up
D01H 1500
Patent
active
041552156
ABSTRACT:
A thread monitor moving along a bank of upright spindles surrounded by vertically reciprocable track rings engaged by travelers, designed to facilitate the winding of yarns, rovings or other filaments on cops carried by the spindles, includes a suction tube picking up loose ends of ruptured filaments for tying them to fresh oncoming threads. A filament-threading device moving with the thread monitor comprises a gripper with a closable hook, displaceable on the level of the track ring, and a deflector in the form of a transverse roller eccentrically rotatable about a horizontal axis skew to the spindle axis. A loose thread end held under tension by the suction tube extends from the cop around the deflector in a first pass, lying high enough above an upper ring flange to give clearance to the traveler carried by this flange, and then via the closed gripper hook to the suction tube; upon an advance of the gripper from a retracted position to a working position alongside the ring, a second pass of the thread end comes to lie approximately tangentially to the ring flange at a small inclination to its plane whereby the traveler, driven by a circulating air flow originating at a nozzle on the deflector support, embraces this second pass and re-engages the ruptured thread. A rotation of the deflector about its axis then elevates the pass so engaged and dislodges the loose thread end from the deflector while the opening of the gripper hook releases this thread end to further aspiration by the suction tube preparatorily to tying.
REFERENCES:
patent: 3128590 (1964-04-01), Escursell-Prat
patent: 3431719 (1969-03-01), Bell
patent: 3486319 (1969-12-01), Lee, Jr. et al.
patent: 3628320 (1971-12-01), Harmon
patent: 3728852 (1973-04-01), Anderson et al.
patent: 3807155 (1974-04-01), Miyazaki et al.
patent: 3882664 (1975-05-01), Cleland
Igel Wolfgang
Weiss Helmut
Petrakes John
Ross Karl F.
Zinser Textilmaschinen GmbH
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