Ring Spinning machine

Details Ring Spinning machine Ring Spinning machine

1988-01-22

1989-10-31

Petrakes, John

Textiles: spinning, twisting, and twining

Apparatus and processes

Driving

57129, D01H 1244, D01H 708

Patent

active

048768472

ABSTRACT:
A ring spinning machine has a direct drive spindle rotatably supported by an upper bearing in a bolster and connected to a rotor of a spindle motor having an upper structure including upper coil end of a stator thereof. A ring is movable up and down along the spindle to guide a yarn to be wound on a bobbin carried by the spindle. The inside diameter of the ring is determined in relation to the size of the upper structure of the spindle motor such that the upper structure can be received at least partially in the ring when the ring is moved to the lower end of its vertical stroke. The length of the unsupported portion of the spindle is reduced to increase the critical or resonance speed of the spindle, thus enabling the spindle to operate at an increased speed.

REFERENCES:
patent: 1840642 (1932-01-01), Stone
patent: 3095687 (1963-07-01), Beerli
patent: 3785140 (1974-01-01), Muller
patent: 4361004 (1982-11-01), Hartmannsgruber

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