SPINNMASCHINE UND VERFAHREN ZUM SPULENWECHSELN

An improved method and apparatus for carrying out the doffing and donning operation of a spinning machine such as an open-end spinning machine. A suction nozzle is carried along the lengthwise direction of the spinning machine at a position before and above the take-up mechanisms of the spinning machine at the time of carrying out the doffing and donning operation. The suction nozzle is capable of holding a leading end portion of a yarn delivered from each spinning unit and this leading end portion of the yarn is caught by a fresh bobbin before the bobbin is mounted on a cradle of the take-up mechanism from outside the spinning machine and, then, the bobbin is mounted on the cradle and the take-up operation is commenced. The suction nozzle is capable of being stopped at any position along the passage thereof by manual operation.