Abstract: A friction false twisting unit having three spindles and respective plurality of disks on each spindle. One spindle and its disks are on a swingable housing which swings out with respect to a stationary housing holding the other two spindles. A lower thread guide is beneath the lowest disk on the first spindle on the swingable housing. The lower thread guide eyelet opening opens toward the front spindle on the stationary housing. The lowest disk on that spindle is a thread guide disk, not a texturing disk. An upper stationary thread guide above the disks has an eyelet opening toward the rear of the housing and toward a respective lateral side of the housing depending upon whether an S twist or a Z twist is being applied to the thread, and the center of the eyelet opening of the upper thread guide is off the center of the triangle defined by the spindles.

Abstract: Calibration of a thread tensioning force meter on a texturing unit for a false twist machine was previously performed differently depending upon the direction of withdrawal, that is forwardly or rearwardly, of the thread from the texturing unit. The thread passes the tensioning force meter by passing over a spring biased support abutment connected with a meter. In the invention, the outlet past the tensioning force meter includes a withdrawal point and slightly upstream of that point a calibration point, which points are separated by a thread eye through which the thread passes. The location of the calibration point is selected with respect to the withdrawal point and with respect to the position of the abutment engaged by the thread that regardless of whether the thread is withdrawn forwardly or rearwardly of the meter, the thread continuously contacts the calibration point. In one direction of withdrawal, the thread only contacts the calibration point.

Abstract: The invention relates to a method for the production of synthetic filament yarn having crepe characteristics by simultaneous drawing and falsetwisting of the filament yarn while imparting a twist by means of a falsetwister, as well as--under certain conditions--drawing of the filament yarns to a ratio of at least 1:1.08.