Patent GB-1278324-A (GB)
Title: Photographic apparatus
Inventor: WADDINGTON PETER HATTEN CROUCH
IPC: G03B15/00
Filed: 1969-05-07
Abstract: 1278324 Photographic apparatus MOLINS MACHINE CO Ltd 6 Aug 1970 [7 May 1969] 23189/69 Heading G2A A self processing camera is provided with perforating means for punching an asymmetric pattern of holes in each frame of the film therein, prior to exposure. As shown, an unexposed frame is in position below an aperture 203. A handle 233 is drawn to the left (as seen) to move a roller assembly 223 into a chain-dot position where roller 223a is in contact with the film and to the right of the pocket 204 of developing liquid associated with the frame to be exposed. The handle 233 is moved to the right, causing the roller 223a move along the path F to flatten the frame, and rollers 225 to engage the free ends of studs 234 causing arms 238 to rock. The arms 238 carry punches (239), Fig.3 (not shown) which are thereby caused to punch a pattern of holes in the frame. The punches remain in the holes. The rocking movement of the arms 238 also  causes a rod 237 to move a deflector 229 into a second position where it forms an extension of guide rails 228. At the end of the path F, the roller assembly 223 is deflected by a deflector 230 to a chain-dot position, i.e. to the beginning of path G. The film frame is then exposed. The handle 233 is drawn again to the left,  moving the roller assembly 223 along the path G. Because of the position of the deflector 229, the roller assembly is brought into contact with the film to the left of the pocket 204. The handle 233 is again moved to the right, so the roller 223a punctures the pocket 204 and spreads the released liquid over the film surface as it moves to the right. A pause is then necessary to allow the liquid to react. A handle 205 is then moved in a direction E, causing a previously exposed length of film 215, if any, to be severed; the remaining free end of the film to be clamped by recess 253 and projection 217; an arm 213 to be retained in its upmost position; a stud 218 to be retracted from a film perforation, and the deflector 229 and rocker arms 238 to be reset to the positions shown. The handle 205, which is held in the chain-dot position, is now moved in direction D. This withdraws a further unexposed length of film from a cassette 201, and also releases the stud 218 so that it can snap into the next film perforation when that registers with the stud 218. The arm 213 is then released allowing the handle 205 to move downwards and a pressure plate 251 releases the clamp formed by projection 217 and recess 253. The handle 205 is then returned to the right, allowing the newly developed length of film to take the place of the previous length 215. A new cycle of operations may commence. The camera is used in apparatus Fig.1 (not shown) for ensuring the accurate mountings of workpieces and tooling on supports such as pallets. The camera housing part 200 is movable relative to the camera lens, so that two images are formed side by side on each frame. One image shows a simulated pallet (107) with the simulated tooling (108) mounted on it, and the other image shows the same but with a simulated workpiece mounted on the tooling (108).