Electromagnetic needle selector for circular knitting machines

Details Electromagnetic needle selector for circular knitting machines Electromagnetic needle selector for circular knitting machines

1990-05-24

1991-09-10

Reynolds, Wm. Carter

Textiles: knitting

Independent-needle machines

Circular

D04B 926, D04B 1578

Patent

active

050463349

ABSTRACT:
An upstanding knitting cylinder carries a multiplicity of needle jacks on its circumference. In order to selectively more the needle jacks up and down on the knitting cylinder during the rotation thereof, a vertical flow of selector fingers capable of engagement with butts on the needle jacks are rigidly mounted to respective sleeves which in turn are rotatably mounted on fixed horizontal shafts disposed in parallel spaced relation to one another in a vertical plane. Disposed opposite the respective sleeves on the fixed shafts are several pairs of electromagnet assemblies which are arranged in two diagonal rows in order to reduce the vertical dimension of the needle selector. An armature secured to each sleeve is held opposite each pair of electromagnet assemblies so as to be alternately attracted thereby, with the consequent bidirectional rotation of the sleeves and, therefore, the pivotal motion of the selector fingers to engage and disengage the needle jack butts. Each electromagnet assembly is constructed to form a closed magnetic loop when energized.

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