Patent GB-617966-A (GB)
Title: Improvements in or relating to photographic copying apparatus
IPC: G03B27/36
Filed: 1945-11-19
Abstract: 617,966. Photographic copying apparatus. TERRY, B. F. Nov. 19, 1945, No. 30980. [Class 98 (i)] The apparatus comprises a base on which are aligned stations for vertically supporting a sheet carrying matter to be copied and a sensitized strip on which said matter is to be imaged, a carriage on said base carrying two mirrors, one of which receives light from the said matter while the other reflects such light on to the sensitized surface, said mirrors being inclined to the longitudinal axis of the carriage, which extends in a direction parallel to the aligned stations, a lens through which said light passes being supported by a member which engages a guide slot in the carriage so that the lens is movable between the two mirrors, said member also engaging means in the base so that the carriage moves away from the stations in a direction normal to the line joining them as the lens is moved to vary the size of the image. The apparatus may also include another carriage similar to the above-mentioned carriage and disposed on the opposite side of the aligned stations, the apparatus thus allowing matter on two sides of a sheet to be copied on two sides of a sensitized strip. As shown in Fig. 2, the apparatus comprises a base 10 over which carriages 23, 24, with mirrors 37, 41 and 45, 48 respectively, may move in guides 11-14. The carriage 24 carries by depending bosses 59, 60, Figs. 2 and 3, a shaft 61 engaged by a boss 112a which projects through a slot 50 in the carriage from a support 115 for a lens 116 connected by a bellows with a frame 119, the boss 112a having a projection, which engages a curved slot 124 in the base 10. Riding a key on the shaft 61 is a clutch member 70 engaging a clutch member 73, Fig. 2, freely mounted on the shaft and having fixed thereto a pinion 74 which cooperates with a pinion 76 disposed between the arms of a yoked bracket 75 on the carriage, the pinion 76 engaging a keyway 56 on a shaft 55 journalled at 53, 54 on the base. Thus, as a hand wheel 66 on shaft 61 is rotated, the lens 116 moves along the axis of the carriage, the carriage itself moves towards one end of the base and shaft 55 rotates. This rotation of shaft 55 causes movement of a lens 104 which is supported on the carriage 23 and has a similar connection with a shaft 87 and a curved slot 112 in the base, the shaft 87 being rotated by co-operating pinions at the end thereof, one of which engages the keyway on shaft 55. If independent movement of lenses 116, 104 is desired, the clutch members 70, 73 may be disengaged by pulling a knob 81 which is connected to the member 70 by a shaft 72. Through a slot 51 in the base pass endless belts, carried by rollers; sheets carrying names to be copied on both sides thereof are fed in the vertical portion between the belts and are illuminated by lamps 169-175. The lens and mirror combination of each carriage thus images the mirror on each face of sensitized sheets 177 which pass through a slot 52 and are held in position for exposure by an apertured member 179 and an apertured member 181, which is spring-urged into engagement therewith.