Abstract: A drive system for providing multiple output speeds in a single direction based upon a reversible input is disclosed. The drive system provides a dual drive path from an input to an output such that each separate drive path is capable of an overall gear ratio different from that of the other drive path. The drive path is selected by the direction of rotation of the input and is configured such that regardless of the drive path selected, the rotation of the output of the drive system will be in a single direction. The drive system utilizes two parallel auxiliary shafts disposed perpendicularly to a single drive shaft and an output shaft disposed parallel to the two auxiliary shafts. Both auxiliary shafts engage the drive shaft such that they are driven by the rotation of the drive shaft in directions opposite each other.

Abstract: In combination, a drawing apparatus and a crimping apparatus. The drawing apparatus comprises integral first and second draw rolls, with attendant separator rolls, and a draw pin. The final draw roll is fluted around its peripheral surface. The draw rolls are driven from the same source as the crimp feed rolls, and in order to control yarn tension at the crimp feed rolls a variable drive means is provided for the draw rolls, to alter their speed with regard to the speed of the feed rolls. A yarn heater is positioned between the final draw roll and the crimp feed rolls, or in the alternative, between the final draw roll and its separator roll.

Abstract: A method and apparatus for texturing continuous filament yarn wherein the yarn is fed at a controlled rate and under controlled tension by a pair of feed rolls into a confined crimping zone against a mass of crimped yarn therein, causing the yarn to collapse longitudinally to form crimps which become part of such mass. Heat and pressure are applied to the yarn mass in the crimping zone to plastically deform the yarn and partially set the crimps. The crimped yarn mass is then fed at a controlled rate by means of toothed rolls from the crimping zone into a setting zone. Heat and pressure are applied to the yarn mass in the setting zone to fully set the crimps. The yarn mass is moved through the setting zone by an endless belt having upstanding teeth that positively engage the yarn mass. The pressure applied to the yarn mass in the setting zone is substantially sufficient only to keep the crimps closed during the final setting thereof. The crimped yarn mass is then fed from the setting zone into a cooling zone.

Abstract: A method and apparatus for texturing continuous filament yarn wherein the yarn is fed at a controlled rate and under controlled tension into a confined crimping zone against a mass of crimped yarn therein causing the yarn to collapse longitudinally forming crimps which become part of such mass. Heat and pressure are applied to the yarn mass in the crimping zone to plastically deform the yarn and partially set the crimps. The crimped yarn mass is then fed at a controlled rate from the crimping zone into a setting zone. Heat and pressure are applied to the yarn mass in the setting zone to fully set the crimps. The pressure applied to the yarn mass in the setting zone is substantially only sufficient to keep the crimps closed during the final setting thereof. The crimped yarn mass is then fed from the setting zone into a cooling zone.