Abstract: The attachment cassette for roll film, cassette type camera is provided with sliding control member which simultaneously controls the displacement of film pressure plate relative to a film gate opening, and a shifting movement of a flexible control member for the opening. The flexible control member is in the form of a steel band which is slidably guided in the cassette housing and is provided with transverse score lines to facilitate manipulation.

Abstract: Disclosed is a coupling for the connection of a drive motor to a still camera to facilitate automated cocking and actuation of the camera. The coupling has two major portions one of which rotates with a drive motor and the other of which rotates with the film transport advance drum. One of the portions will be a cam and the other portion a cam biassing device such that under low torque loads being transmitted from the drive motor to the film transport advance drum, the two portions rotate together. When the film has been wound, the film transport advance drum stops suddenly increasing the torque transmitted between the still moving motor and the transport advance drum. When the torque reaches a preset maximum amount, the cam biassing device slips relative to the cam and actually drives itself in a reverse direction.