Method of and apparatus for twisting yarn or thread
AssigneeHAMEL Projektierungs- und Verwaltungs-AG.
InventorsAlbert Kunz, Helmut Kullmann
Life of this patent
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Abstract
A system for the spinning or twisting of thread or yarn in which a thread is supplied by a strand-supply spool and is collected on a strand-takeup spool so that the strand spans the distance between the spools over a predetermined length, the twist-generating spool being driven for a predetermined number of turns to bring the number of twists over the length to the normal twisting level before the two spools are operatively connected together for joint operation at the normal rate. The delay between operation of the nontwist-generating spool and the twist-generating spool is created by a counter responsive to the number of twists produced in the length during the interval.
Claims18
In a method of operating a strand-twisting installation wherein a strand passes from a strand-supply spool to a strand-takeup spool and at one of the spools forms a twist-imparting mechanism, the improvement which comprises the steps of:
- a. operating said twist-imparting mechanism to twist the strand between said spools prior to advancing the strand until the length of the strand between said spools has received a predetermined number of twists;
- b. advancing said strand between said spools;
- c. synchronously driving said spools with said strand advancing between them while operating said mechanism to twist the advancing strand only upon the generation of said predetermined number of twists in said strand:
- d. counting the number of turns of said mechanism and registering the counted number of turns prior to advance of the strand the number of turns imparted to said strand between said spools, said spools being coupled for synchronous operation only upon the registered count attaining a predetermined value;
- and reducing the speed of said mechanism in response to the registered count prior to coupling said spools for synchronous operation.
A strand-twisting apparatus comprising a strand-supply spool and a strand-takeup spool, one of said spools forming a twist-generating mechanism;
- means for driving said twist-generating mechanism;
- a counter responsive to the number of twists produced by said twist-generating mechanism;
- and means connected to said counter and synchronously connecting said spools for joint operation to advance said strand between them only upon the attainment of a predetermined count.
Dependencies are inferred from the claim text.