nozzles it is provided that the control apparatus is equipped with devices for generating a piecing signal the piecing signal being generated after the yarn detector or detectors has have responded or if a sliver detector has responded after the defect signal of the sliver detector is extinguished application_number US 47079990 A description the spinning arrangement contains two drafting units 1 2 which are combined into a double aggregate slivers 3 4 enter into the drafting units 1 2 and are drawn to a desired yarn count in the drafting units the drawn yarn components 5 6 which leave the drafting units 1 2 enter into pneumatic false twisting devices 7 8 in these pneumatic false twisting devices 7 8 they are prestrengthened in a known manner to such an extent that they can be temporarily wound up for a later operation the two prestrengthened yarn components 9 10 which leave the false twisting devices 7 8 are combined to a double yarn 12 by means of yarn guides 11 the double yarn 12 is withdrawn by means of a withdrawal device 13 and then moves in the direction of the arrow c to a wind up device 14 by which the double yarn 12 is wound up side by side onto a package spool 57 the slivers 3 4 are fed from cans 15 16 which are placed on the rearward side of the machine the drafting units 1 2 the false twisting device 7 8 the withdrawal device 13 and the wind.