Movable servicing device for a spinning machine, especially an open end spinning machine

Servicing apparatus for at least one spinning machine comprising:

• servicing means for servicing spinning assemblies of a spinning machine,
• moving means for moving said servicing means to respective servicing positions adjacent the respective spinning assembly to be serviced,
• disturbance responsive control means for controlling said moving means to move said servicing means to a servicing position adjacent a spinning assembly in response to detection of an operational disturbance at said spinning assembly, whereby those spinning assemblies exhibiting an operational disturbance can be serviced,
• step-by-step control means for controlling said moving means to move said servicing means to respective servicing positions adjacent respective spinning assemblies in a predetermined sequence, where preventive maintenance servicing operations can be carried out by said servicing means,
• and switchover means for switching control of said moving means between said disturbance responsive control means and said step-by-step control means.