1 these individual fibers are conveyed into a rotating rotor and the forming fiber ring is withdrawn from the rotor groove of the rotor through the yarn draw off pipe 2 the withdrawal of the produced yarn is carried out by the yarn draw off device 4 the yarn draw off device 4 consists in particular of the draw off shaft 6 and of a pressure roller 5 the pressure roller 5 is borne by a pressure roller lever 7 which is attached to the machine frame 8 within this yarn section the produced yarn is checked by the quality control system 3 for irregularities in the yarn the yarn draw off device 4 holds the yarn 9 clampingly and conveys it in the direction of the winding device in the course of the yarn and following the yarn draw off device 4 is a yarn monitor 16 which monitors the presence of the yarn a yarn guide 10 ensures that the yarn is traversed over the entire width of the bobbin 12 the bobbin 12 is held by a bobbin mount 13 which is connected to the machine frame 8 the bobbin 12 is rotated by the bobbin roller 11 so that the yarn is wound up this represents the wind up device fig2 shows a view of the drive of a draw off device for each machine.