Patent GB-131149-A (GB)
Title: Improvements in Photographic and Cinematographic Apparatus.
Inventor: TARTARA GIUSEPPE GIOVANNI BATT
IPC: G03B19/18
Filed: 1918-08-14
Abstract: 131,149. Tartara, G. G. B. Aug. 14, 1916. Kinematographapparatus.-Relates to kinematograph cameras operated by clockwork and provided with mechanism whereby a series of motion pictures or a single photograpb may be taken, and consists in the emplovment of a notched rotary disk engnged by a stop. carried by a lever controlled by either of two press buttons according as a series of pictures or a single picture is required. Counting mechanism is fitted, and the camera may be used also for printing. The clockwork mechanism is removable so that the camera may be manually operated. The camera. 1 is divided into two compartments by a partition 2. One compartment, Fig. 1, contains the lens 3. rotary .shutter 4, supply spool 8, pressure frame 10, spool 11, and feed drum 13 formed integrally with a Maltese cross 19. The driving gear is located in the second compartment, Fig. 2.. and comprises a toothed wheel 15 carrying the pins 17 and segments 18, co-acting with the Maltese cross 19 and operating a train of wheels driving the pinion 6 of the shutter. A pinion 24 on the shaft of the wheel 15 gears with a pinion 25 on the shaft driving the receiving spool 11. The driving and control mechanism is enclosed in a, box detachably connected to the side of the camera and comprises a spring drum 42, the toothed rim 46 of which gears with a wheel 47 on an axle which projects through the wall 38 of the box and engages the hub 37 of the wheel 15 in the camera. The controlling mechanism comprises a lever 56, Figs. 3 and 6, pivoted at 56<1> and held in normal position by a spring 57. The lever 56 carries pins 59, 60, 61 engaging respectively the notched disks 50, 52 of the gearing and an arm 53 connected through a spring to the axle of the fly governor 49. The lever 56 also carries a pin 64 engaged by a lever 65 operated by an external push button 66 so that while this is depressed the mechanism is freed and a continuous series of photographs is taken. A single photograph is taken by depressing the button 71 connected to a lever 70 which forces downwards a sliding bar 67 carrying a flat spring 73. The spring 73 engages a pin 63 on the lever 56 which is thus rocked about its pivot 56<1> to free the mechanism. Further movement brings the spring 73 into contact with a cam 74 which raises it out of engagement with the pin 63 so that the lever 56 returns to its normal position and the pin 59 engages the next notch of the wheel 50. To prevent the pin 59 returning so rapidly as to engage the same notch and thus prevent any movement of the driving mechanism, the wheel 52 which is geared to move more rapidly than the wheel 50 is formed with a notch, the bottom of which merges gradually into the peripheral surface of the disk. Thus the wheel 52 moves forward immediately the pin 60 is freed from the notch by the rooking of the lever 56 and so prevents return movement of the lever 56 and its pin 59 until the wheel 52 has made one complete revolution. The counting mechanism comprises a graduated ratchet wheel 26 controlled by an oscillating lever 29, Fig. 1, operated by an eccentric pin 31 on the shaft of the wheel 15 to prevent the lever jamming against one of the teeth of the ratchet wheel. When the camera is closed it is pivoted at 33 in an elongated slot 34, and is held in normal position by a spring 35. The speed of the mechanism is controlled by a spring- mounted brake which may be pressed against the shaft of the governor 49. For making positives the film to be printed is inserted in the camera in the ordinary way and the negative film is passed through openings 79, Fig. 1, in the camera walls so that the perforations are engaged by the teeth of the drum 13. The shutter is closed and light admitted through an opening 80<1> in the back of the camera. The openings 79 are normally closed by slides 80 pressed against the camera walls by springs 82.