Patent GB-191414275-A (GB)
Title: Improvements in and relating to Apparatus for Taking Animated Pictures.
Inventor: RIPER LEWIS CESAR VAN
IPC: G03B21/32
Filed: 1914-06-13
Granted: 1915-06-14
Abstract: 14,275. Riper, L. C. van. June 13. Kinematograph apparatus.-A camera driven by clock-work mechanism has the film and lens compartment 3, Fig. 1, partitioned off from the shutter 54, 55 and from the clock-work compartment 2. The clock-work compartment contains a hand-operated starting- brake, an automatic speed governor, a film-measurer, the shutter-driving mechanism, and a through view-finder. The only spindle-shafts that project through the partition 4 are the film-sprocket shaft 22, Figs. 1 and 2, the shaft 42 on which the revolving crank-disk 95 operating the intermittent feedmechanism is mounted, and the shaft 32 of the take-up spool 33. The spring drum 5 is wound from a handle 19 and shaft 18 through an intermediate pinion 10, Fig. 3, which is kept in frictional contact with the retaining- pawl 14 by a spring 15. On winding the spring, the pawl is retracted by the pinion 10, its motion being limited by the elbow 14<a>. The action of the spring tending to turn the pinions 8, 10 returns the pawl into engagement with the ratchet-wheel 9. The film is fed from the supply spool 89 to the gate, and from the gate to the take-up spool by a single sprocket 25 on the shaft 22, which is driven from the pinion 20 on the clock-work drum by gearing 20, 23, 21. An indicator 81, Fig. 3, showing the length of film exposed is also driven by a train of gearing from a pinion 88 on the shaft 24. The take-up spool 33 on the shaft 32 is driven by a belt 30 over pulleys 31, 29, the shaft 28 of the latter pulley being driven from the sprocket shaft 24 by pinions 26, 27. A fly governor 73, Fig. 4, controlling the clock-work is mounted on a worm shaft 36 driven from the shaft 28 by a worm-wheel 34. A fly-wheel 71 is also slidably mounted on the shaft 36 by the strips 70 carrying the weights 73, and carries a fibrous or elastic pad 77 which, when the speed of the driven mechanism is too great, contacts with a bracket 76 and operates as an automatic brake. The bracket is adjustable according to an indicator 78 and a scale, whereby the speed can be limited to any desired fixed quantity. The intermittent film-feed mechanism includes a reciprocating slide 93<a>, Fig. 2, carrying a spring claw 98 and reciprocated by the revolving crank-disk 95 and connecting-rod 96. The shaft 42 carrying the crank-disk is driven from the sprocket shaft 24 by gearing 26, 27, 28, 37, 38, 39, 40, 41, Fig. 1. The shutter blades 54, 55 are mounted in a housing on the front of the camera, and the shutter spindle 51, Figs. 1 and 5, is driven from the shaft 42 by gearing 43, 44, 45, 46, 47, 47<a>, 49, 48, 50. The blades 54, 55 are supported on a collar 53, and the blade 54 nearest the camera has a hole 58 engaging a pin 57 on the collar 53. The blades each have two sector apertures 59 which can be adjusted to overlap according' to an index scale 60 on one blade and an index mark 61 on the edge of an aperture 59<a> cut in the outer blade. A starting and stopping brake comprises a metal band 63 pressed into contact with a drum 62 on the shaft 42 by a spring 64 and is released by pressing a thumb-knob 66 projecting through the front plate 46. A through view-finder 104, Fig. 5, is provided at the upper part of the camera for sighting.