Automatic developing machine

A photographic developing machine comprising a light-tight housing (11);

• a rotatable drum (511) within said housing;
• and
• winding means operable to wind onto said drum (511) a length of exposed photosensitive material (F) in area contact with a guide web (W) coated with a gelatinous processing agent (D) and to rewind the developed said photosensitive material (F) and the used guide web (W) from said drum (511) into respective individual locations (P,31);
• characterized in that:
• said winding means comprises electric motor means;
• and by an overload detector (531,532,300) operable to detect an overload condition imposed on said electric motor means, said overload condition being representative of completion of a said winding operation onto said drum (511);
• means (55,S.sub.2-1, S.sub.2-2) associated with said overload detector (531,532,300) and responsive to detection of a said overload condition to stop a said winding operation of said electric motor means and to start operation of a timer (T) to time a predetermined development time;
• and
• means (S.sub.3) responsive to said timer (T) to initiate a said rewinding operation by said electric motor means after elapse of said predetermined development time.