29 reach a web guide 30 in the drawing unit intake and are pulled in the form of a bundle 35 and by means of the withdrawing rolls 31 32 through a sliver trumpet 34 in which they are combined to form a sliver bundle 35 that is subsequently deposited in coiler cans the withdrawing rolls 31 32 the lower roll iii at the input and the lower roll ii in the center which are for example coupled mechanically with toothed belts are driven by the variable speed motor 36 wherein a desired value can be preset the associated upper rolls 28 and 27 rotate along the main motor 37 drives the lower output roll i and the withdrawing rolls 31 32 separate controllers 38 and 39 are provided for the variable speed motor 36 and the main motor 37 the control speed control occurs respectively via a closed control circuit wherein separate tachometer generators are assigned to the control unit 36 and the main motor 37 at the drawing unit intake an area that is proportional to the mass e g the cross section of the fed in slivers 20 is measured by an intake measuring unit 24 at the drawing unit intake the cross section of the exiting sliver bundle 35 is obtained with an output measuring unit 40 that is associated with the sliver trumpet 34 the sliver trumpet 34 shown schematically here is embodied according to the invention a central computer unit 60 control and regulating equipment.