92919497 A description referring now to the accompanying drawings and initially to fig1 one side of an open end rotor spinning machine is indicated schematically and identified as a whole by 1 in such spinning machines each machine side has a plurality of work stations 2 aligned with one another with the aligned stations of each side arranged back to back and with each spinning station being equipped with a spinning unit 3 and a winding device 4 at each station a sliver 6 delivered from a sliver can 5 is spun in the spinning unit 3 into a yarn 7 which is withdrawn and wound into the form of a cheese 8 by a winding device 4 as represented each winding device 4 is equipped with a bobbin frame 9 for rotatably supporting a winding bobbin 8 while being formed into a cheese and a winding drum 11 for driving the winding bobbin during normal winding operations in addition the open end rotor spinning machine 1 has a circulating tube and bobbin transport device 12 for providing the work stations of the spinning machine with empty tubes and for moving away the finished cheeses a service unit for example a piecing cart 16 is disposed at or on the spinning machine 1 and is movable on guide rails 13.