Take-up machine motor control

Details Take-up machine motor control Take-up machine motor control

1984-05-11

1986-01-28

Gilreath, Stanley N.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

242 7551, B65H 5938

Patent

active

045666466

ABSTRACT:
This invention relates to a take-up machine utilized in conjunction with the production of fiber or yarn wherein the product fiber or yarn, as it is produced, is wound onto spools or tubes. A control is provided for varying the speed of an electric motor which drives a spindle on which the tube or spool is mounted. This control is actuated by the position of a compensator arm which is connected to a core of a linear voltage differential transformer which, in turn, controls current flow through an NPN power transistor. The power transistor, in turn, controls current flow through a rectifier having one circuit for each of three windings of a three-phase AC motor, thereby controlling the speed of rotation of the motor.

REFERENCES:
patent: 2275192 (1942-03-01), Bailey
patent: 2752105 (1956-06-01), Keith
patent: 3048343 (1962-08-01), Keith
patent: 3537660 (1970-11-01), Schippers et al.
patent: 3578795 (1971-05-01), Polese
patent: 3670975 (1972-06-01), Tomimatsu

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