US Patent 7226223 Camera with motorized film advancement

A camera (2) has a main body (4) defining a pair of film chambers on opposite sides of an exposure opening (18) comprising a first chamber (14) for receiving a film cassette having a central spool to which film is secured and a second chamber (16) for receiving a second film container into which film is pre-wound prior to use, a drive shaft having an end which extends into the first chamber (14) for engaging the spool, an electric motor (30) disposed between the chambers operably connected to the drive shaft to drive the shaft in one direction, and a shutter mechanism with a shutter release assembly operably connected to the motor control.