Method and apparatus for uniformly twisting filamentary material

Claim 1

TWISTER APPARATUS COMPRISING A SPINDLE SECTION AND A CREEL SECTION, A PLURALITY OF SPINDLES ARRANGED TO SUPPORT SPOOLS UPON WHICH LINEAR MATERIAL IS ADAPTED TO BE WOUND, A PLURALITY OF ROTATABLE SUPPORTS AT THE CREEL SECTION, EACH OF SAID SUPPORTS BEING ADAPTED TO CARRY A PACKAGE OF LINEAR MATERIAL, A TWISTER RING SURROUNDING EACH OF THE SPINDLES AND HAVING A TRAVELER MOVABLE THEREON, SAID TRAVELER BEING ARRANGED TO RECEIVE LINEAR MATERIAL FROM A PACKAGE, A MOTOR ARRANGED TO ROTATE ALL OF THE SPINDLES AT A SUBSTANTIALLY CONSTANT SPEED, SPEED CHANGING MECHANISM CONNECTED WITH AND DRIVEN BY SAID MOTOR, AN OUTPUT SHAFT DRIVEN BY THE SPEED CHANGING MECHANISM, A SYNCHRONOUS MOTOR ASSOCIATED WITH THE SPEED CHANGING MECHANISM FOR VARYING THE SPEED OF THE OUTPUT SHAFT, MEANS FOR DRIVING THE ROTABLE PACKAGE SUPPORTS AT THE CREEL SECTION BY THE OUTPUT SHAFT OF THE SPEED CHANGING MECHANISM, THE SPEED OF THE OUTPUT SHAFT BEING CONTINUOUSLY CHANGED AT A RATE WHEREBY THE SPEED OF THE ROTATABLE PACKAGE SUPPORTS IS CONTINUOUSLY MODIFIED TO ADVANCE THE LINEAR MATERIAL TO THE SPOOLS ON THE SPINDLES AT A DIFFERENTIAL RATE OF SPEED TO PROVIDE UNIFORM TWIST PER UNIT OF LENGTH IN THE LINEAR MATERIAL.