Abstract: The present invention relates to an arrangement equipped with a motor and a transmission device for the winding of those cameras provided with a winding shaft which is accessible from the outside and which is designed to be rotated until its movement is arrested by a first locking device in the form of a tensioning lock, which after exposure of the film, will once more release the winding shaft. Included in the transmission device is a spring which is tensioned by the motor whilst the camera is being tensioned and which, once tensioning of the camera is complete, is kept under tension under the effect of both the tensioning lock of the camera and a second locking device contained in the arrangement in the form of a rewinding lock. The arrangement also includes a switch which, once tensioning is complete, that is to say with the tensioning shaft in the position in which it is locked against further rotation by the tensioning lock, will interrupt the power supply to the motor.

Abstract: A mechanism controls the movement of the mirror in single-lens reflex cameras between the exposure position and the viewing position. Articulated arms 12, 13 in the mechanism are pivotally mounted both on a mirror holder 8 and to the camera body 1. The articulated arms are of two different kinds, with at least one kind exhibiting two identical arms 12, each situated on its own side of the camera body and connected together via a parallel guide bar. The articulated arms of one kind, the front articulated arms 13, extend from the mirror holder 8 to the front of the camera body 1, and the articulated arms of the other kind, the rear articulated arms 12, extend from the mirror holder 8 towards the rear of the camera body 1. The bearings C and A in the mirror holder for each type of articulated arm are situated in the same part of the mirror holder 8, with that of the front articulated arm 13 being slightly below that of the rear arm 12, viewed from the plane of the mirror.