Abstract: Pin register vacuum systems. A vacuum holder for holding film in a camera. Two pins are located near one end of the holder to locate film having corresponding holes. A first spring is mounted on one side of the holder. A second spring is mounted on one end of the holder. Vacuum is applied to hold the film flat in the holder. A vacuum register glass carrier for the enlarger and a vacuum register platen for enlarging are provided.

Abstract: In a camera of the flat bed type having a base, the camera being focused by looking at ground glass back viewing screen supported on a frame which is movable for focusing; means are provided to adjust the frame to simultaneously move the frame forward and backwards, sideways and rotatably for focusing the camera, and means are provided to lock the frame in position when the camera is focused. This invention combines four movements for the back of a folding type or flat bed camera. 1. A rising back, 2. shifting from side to side, 3. lateral swing and 4. tilting toward front or back. All these movements are achieved without using a center pivoting point. Doing it in a continuous working procedure, efficiently and with ease of movement with positive locking. The locking of the vertical movement clamping is accomplished on the sliding member and pivoting on the bottom axis. Means are provided for pivoting from either left or right side with its clamping means when camera is in focus.

Abstract: In a camera of the flat bed type having a base, the camera being focused by looking at ground glass back viewing screen supported on a frame which is movable for focusing; means are provided to adjust the frame to simultaneously move the frame forward and backwards, sideways and rotatably for focusing the camera, and means are provided to lock the frame in position when the camera is focused. This invention combines four movements for the back of a folding type or flat bed camera. 1. A rising back, 2. shifting from side to side, 3. lateral swing and 4. tilting toward front or back. All these movements are achieved without using a center pivoting point. Doing it in a continuous working procedure, efficiently and with ease of movement with positive locking. The locking of the vertical movement clamping is accomplished on the sliding member and pivoting on the bottom axis. Means are provided for pivoting from either left or right side with its clamping means when camera is in focus.

Abstract: A holder for so-called cut photographic film sheets into which the inserted film sheet is provided with an initial position that is readily manually achieved. Specifically, the sides of the film sheet during insertion are advantageously located beneath the overhang of lip structures which project from opposite sides into the film-receiving compartment of the holder. Thereafter, the frame of the holder is closed about the film sheet and, in the process, the film sheet assumes a final mounted position in the holder in which all four peripheral edges thereof are properly confined against movement.