Patent GB-191412337-A (GB)
Title: Improvements in Kinematographic Devices.
Inventor: STOFFELS EMILE MARTIN
IPC: G03B21/32
Filed: 1914-05-19
Abstract: 12,337. Stoffels, E. M. May 19. Kinematograph apparatus. - Relates to apparatus of the plate type. The photographic camera or casing 117, Figs. 4 and 16, of the projection apparatus contains a carrying frame 1 which receives each plate in succession from a replaceable box 104 at the top, carries it to and fro horizontally, step by step, lets it drop at the finish of each traverse, and finally delivers it to a similar box 104' at the bottom. Each box 104 has front and back shutters 106, and the camera has a shutter 106<a>. Each plate is fitted in a separate grooved frame 101 (with retaining spring) Fig. 1, which has, on each side, half as many lateral slots 102 as there are rows of pictures, and the plate-box is put on the camera in conjunction with a detachable box 105 which contains a lever 110 actuated by a spring coiled on its axis to push the plateframes forward, so that the front one emerges clear of the shutters into guides 118 close behind the carrying frame. The lever can be locked by a push-pin 114, and a counting-dial 112 shows how many plates have been discharged. As the carrying frame is shifted in the direction of perspective in Fig. 4 to expose the last row of pictures on the lowered plate already within it, the front plate of the pack above is pushed out of the guides 118 by a finger 2 and is deflected into the carrying frame by flat springs 119<a>, 119<b>. The drop per row at the end of each traverse is effected by the disengagement of a catch 5 from a slot on one side and the simultaneous engagement of a fellow-catch with a slot on the other side. When the catch is disengaged from the last slot, the plate-frame drops gently upon the step 121, and, on nearing the end of its last traverse, a spring strip 120, Fig. 15<a> (d and e), which is flexed by a pin 10 on the carrying frame and then escapes from the pin, disengages its forward edge from the carrying frame. In the next traverse, the plate-frame just disengaged is left against the step 121, and is pressed towards the receiving-box by the spring 120, Fig. 15<a> (b), the pin 10 now travelling behind the latter. The mechanism for giving the traverse comprises a disk A having on each side a pair of incomplete concentric flanges which are joined up as a spiral at the gaps. This disk rotates with its flanges on one side engaged with one of two racks 8' on the carrying frame, and, after as many revolutions as there are pictures in a row, it is shifted to rotate against the other rack. The racks can be replaced when worn out after disengagement from a fastening 7. The rotation is derived from a shaft E<2> with a handle E', through skew and spur gearing F, G, H, J, C. The shaft N, bearing the broad pinion C, the disk A, and a collar D, is shifted by face cams H<1> on the wheel H and a lever M. To disengage one of the drop-feed catches 5 at the conclusion of each traverse, a draw-hook K is operated by a tappet L<2> on the first shaft E<2>, and a lever L'. The objective O is covered and uncovered by the shutter B having an adjustable concentric aperture. When the apparatus is used photographically, the negatives in each filled receiving-box are developed and fixed without removal therefrom. For this purpose, tanks divided into two compartments containing respectively a developing and a fixing bath are attached in place of the lever-boxes, and the contents are admitted to the plate-box by pressing buttons operating valves. The positives thus produced may be exposed before being completely dry as on their travel through the apparatus they are not submitted to any frictional engagement.