Method and apparatus for false twisting yarn

Abstract From the Canadian patent

A system for applying a false twist to a continuously traveling synthetic yarn utilizing a plurality of axially spaced disks mounted for rotation upon spaced, parallel shafts. At least two disks are mounted upon each shaft, with one of the disks on each shaft having a yarn-engaging friction surface for cooperating in partial-overlapping peripheral relation with a disk on the other shaft to form yarn seats. The yarn-engaging surfaces of all disks are rectilinear, and increased surface contact with the traveling yarn is achieved due to the angle of the yarn passing in direct engagement and across the disks as the yarn passes to opposite sides of a plane extending through the shaft axes while …