Patent GB-155119-A (GB)
Title: Improvements in and relating to multiple view cameras
IPC: G03B37/02
Filed: 1919-12-31
Abstract: 155,119. Anderson, J. W. Dec. 31, 1919. Kinematograph apparatus.-In a camera for taking photographs in quick succession upon a dry plate, and in which the plate carrier moves vertically, under the control of an escapement, within .a horizontally reciprocating frame, the reciprocating frame is moved by an intermittently-driven endless chain; the escapement device may consist of a vertical rack having teeth which are alternately arranged on opposite sides and engage detents on a slidable bar, and means may be provided whereby the reciprocation of the frame may take place without exposure of the plate. Figs. 1 and 2 show front and rear elevations respectively of a camera in accordance with the invention, the front and rear sides being removed. The endless chain 45 passes round sprockets 43, 44, the sprocket 43 being intermittently driven by a ratchet arm 42 connected by a link 41 with a flywheel 40 driven by a chain 39 from a hand or motor operated sprocket 39a. The sprocket 41 may also be driven by a ratchet arm 49 linked to the arm 42, and a ratchet arm 51 operated by a rod 52 may be provided for enabling the position of the chain and reciprocating frame to be adjusted. The chain 45 carries a pin 46 engaging in a vertical slot 47 in a bar 48 fixed to the reciprocating frame 12. This frame (shown separately in Figs. 4 and 9) contains a plate carrier 15, at the bottom of which is a sliding bar 27 having two detents 28 and end lugs 30. A rack 17 is detachably held in the frame 12 between the detents 28, and each of its teeth in turn supports the plate carrier by means of one of the detents during one horizontal run of the frame 12. The frame 12 moves along rails 13, Fig. 2, and at the end of each run a flange 29, secured to a wall of the camera engages one of the lugs 30 and slides the bar 27 so that the particular detent engaged with a rack tooth is pushed off the tooth, thus allowing the plate carrier to fall until pulled up by the engagement of the other detent with the tooth below. The flange 29 causing the first downward movement of the plate carrier may have its upper part 29a hinged, and this part may be held out of operative position by a pin 58. The pin 58 and a safety shutter for the lens are simultaneously controlled by a pneumatic bulb. When a nervous subject is being photographed, and the camera mechanism is started, the part 29a may be held up, and the shutter may be before the lens, so that movement of the frame 12 may take place without the taking of photographs. When the subject is at ease, the bulb may be pressed so as to remove the shutter and allow the part 29a to fall and commence photographing. The height and width of each photograph may be varied by means of a vertically adjustable plate 11 and two horizontally adjustable, plates 56, the former carrying a stepped plate 57 for enabling the plates 56 to be equally adjusted. The exposure of each photograph is controlled by a rotating chaindriven shutter 8 having a segment 63 adjustable about its spindle and secured to the main part by means of an integral plate 54 and a thumbscrew 55. Each plate is carried in a light-tight holder 16, Fig. 7, having a sliding shutter 31. When the holder is placed in the plate carrier, a lug 36 on the shutter is engaged by a bifurcated member 35 on an endless chain 34. After the camera is closed the chain is moved bv an external handle 38, Figs. 1 and 2, so as to lower the member 35 and withdraw the shutter from the holder.