Abstract: A film winding spool for a photographic camera has an inner cylindrical member driven in rotation and provided with engaging formations for engaging an initial portion of the film, and an outer cylindrical member surrounding the inner member so as to form a space therebetween and having a slot for introducing the initial portion of a film into this space and an outer surface for winding successive coils of the film, wherein the outer member has at least one opening arranged so that a piece of the film separated from a remaining part of the film can be withdrawn from the space between the inner and outer members through the opening.

Abstract: A motorized film-transporting mechanism for roll film cameras has a motor-circuit switch arranged in the path of movement of a film sensor so as to be closed when a film is present in the camera. A film counter is biased to zero position when the camera back is opened. When a film is present in the camera and the back is closed, the motor is automatically energized to advance the film by a length corresponding to two film frames so as to move this usually spoiled (light-blackened) film length out of the way. The motor is then automatically de-energized and all components are in readiness for subsequent picture-taking and incremental film advance by one film frame each. When all exposures have been made the film is rewound by the motor which shuts down when rewinding is completed.