opening roller 42 is mounted on a shaft 18 which is driven by a tangential belt 15 extending over the length of the spinning machine and in engagement against the opening roller shafts 18 of all spinning stations the sliver draw in cylinder 16 is driven in a known manner via a gear arrangement of a worm and a worm gear 19 with the worm fixed on a driveshaft 20 extending over the length of the spinning machine a dirt removal unit 21 is arranged underneath the opening roller housing 14 to receive soil debris dirt and other waste discharged from a dirt exit opening of the opening roller housing 14 and removes such waste for example by the mechanical means of a circulating dirt transport belt 22 a sliver loop opener 23 is fixedly arranged on the frame of this dirt removal unit 21 and has a guide bore 24 through which entering sliver 25 travels so as to be smoothed while running through the loop opener 23 in advance of subsequently entering the feed trough condenser unit 17 disposed at a downstream distance a maintenance operation on the open end spinning station is represented in fig2 i e the open end spinning unit has been opened by a.