the direction of thread travel or transfer the advantages which can be realized by virtue thereof reside in the following a to overcome the sliding friction generated in the thread transfer direction between the thread and the friction disks and b to generate the normal force between the thread and the friction disk is generated by the false twist device itself to such an extent that the ratio of the thread tensions before and after passing along the false twist device reaches values considerably lower thant the values previously achieved and 2 the twist is no longer imparted substantially by the lowest disks but is imparted more evenly throughout the entire false twist device as seen by referring to fig5 the friction force r n u03bc generates at the assumed contact point 29 together with the thread guide pin 13 arranged at an angle of inclination u03b1 90 u00b0 a reaction and a corresponding friction force r s the total torque or rotational moment m d available for imparting twist in the thread in the direction d thus is determined as follows in order to maintain m d as large as possible the surface of the pin 13 is accordingly chosen such that the friction r s is reduced.