Still-camera film transport system with end-of-film motor deenergization

In a photographic still camera of the type accommodating cassette film having one perforation per film frame and including a shutter mechanism having a set state and an unset state, a film transport system which comprises, in combination, an electric film transport motor coupled to the shutter mechanism and operative when energized for transporting the cassette film and setting the shutter mechanism;

• a perforation detector including a feeler mounted to enter film perforations and cooperating perforation-detecting switch means operative for generating a perforation signal;
• shutter-state switch means responsive to the shutter mechanism and generating a shutter-state signal indicating the state of the shutter mechanism;
• time-delay means initiating a time delay interval upon commencement of film trnsport and producing a time-delay-elapsed signal when the time delay interval has elapsed, the duration of the time delay interval being greater than the time required for the transport of cassette film from the last perforation to the actual end of the film;
• at least one motor-control switch connected to the film transport motor for energizing and deenergizing the motor;
• logic circuit means connected to and controlling the motor-control switch in response to perforation and time-delay-elapsed signals but furthermore in dependence upon the shutter-state signal, and means for ascertaining the speed of the transport motor and preventing the logic circuit means from responding to the time-delay-elapsed signal unless the transport motor speed is lower than a predetermined value.