Abstract: To stop and restart and open-end spinning machine with a plurality of spinning devices, all the spinning devices are stopped together, while the vacuum is maintained. The thread end resulting from this interruption in the spinning process is then prepared successively at each spinning unit for joining and is fed to the spinning device in a thread-joining position, whereupon the vacuum is then cut off. When the open-end spinning machine is started, after the vacuum has first been applied, the threads are fed together, on all the spinning devices to the fiber-collecting surfaces of the spinning devices. The open-end spinning machine has a service device movable along the machine for preparing the threads to be joined and for feeding them to the individual spinning cells, as well as a central control device which has a stoppig device and a starting device for the open-end spinning machine. The stopping device is connected in control terms to a switch-on device and to a switch-off device for the service device.

Abstract: Free flight magnetizable selector elements are transferable from a selector element store disc to a selector element support disc for selecting particular ones of a series of textile processing implements in response to a program. The discs are disposed with an arcuate portion of one disc closely adjacent to an arcuate portion of the other disc, and the selector elements are transferred from store disc sockets to support disc sockets and vice versa by a transfer magnet. The discs include magnets with opposite polarity to maintain transferred selector elements in the sockets of the selected disc until the transfer magnet effects another transfer. The sockets of the store means and support means have the same pitch as the textile implements; however, the sockets of the entire support means may be distributed among a set of identical superjacent discs each having a socket pitch an integer multiple of the textile processing implement pitch. The store means has a corresponding set of superjacent discs.