The Optical Magic Lantern Journal (April 1896)

72 The Optical Magic Lantern Journal and Photographic Enlarger. the rollers and presser-pad in front of the oblong aperture through which the light shines, then under an alu , 2 , minium sprocketwheel to a second spool, on which it is automatically wound up. JHach turn of the horizontal shaft, which is driven from a small hand-wheel, actuates a cam which instantaneously shuts off the light, and at the same time the sprocket-wheel is acted on by a steel finger, causing it to move forward the space of one picture ; the film is then locked in position for projection, the shutter opens and allows the picture to be projected. In this way the film is at rest the greater part of a revolution, giving a bright image. The rapid revolution of the shaft causes successive pictures to appear without discontinuity, as in the kinetoscope, until the whole scene has been presented. This instrument is now being exhibited at Olympia, and is creating a great sensation. KEY’8 FLASH LAMP. Mr. Henry Alphonse Keys, of 17, Apsley-road, Waltaamstow, has lately patented and brought out a new flash lamp which is deserving of great credit, as it is constructed in such a way that a continuous light of extreme brilliancy may be obtained, whilst every particle of the flash light powder is consumed by reason of the completeness of the flame surrounding the outlets. The lamp is 3} inches in length, 24 broad, and 14deep. There are a double row of wicks, the outlets being in the centre of the inner wick. (a) is the container for the mag nesium powder which is introduced at (B). Into the body of the lamp proper (D), a small quantity of methylated spirit is poured into the space (H), between the wicks (£) and (F). The outlet tubes (a) are spread fan-fashion s0 as to enable the flame produced to be as large as possible. A rubber tubing with a mouthpiece a la tobacco pipe is sprung on at (Cc), and cd the flash of flame lasts just as long as one blows into the mouth-piece. By a series of holes the spirit finds its way from the trough (H) to the two wicks (z) and (F). When not in use, a cap covers the wicks and outlet tubes. This lamp is a simple, complete and effective one. ——:0:—— Patent Intelligence. Lhe following list, relating to current Patent Applications, is compiled expressly for ‘The Optical Magic Lantern Journal” by a registered Patent Agent. For further information apply to The Patent Department, " Optical Magic Lantern Journal,” 9, Carthusian Street, London, E.C. No. RECENT PATENT APPLICATIONS. 3777. 19th February, 1896. H. W. Short. A new or improved means for giving intermittent motion to a strip or film for taking or exhibiting photographs. 21st February, 1896. R. D. Smith. Combined reducing and enlarging camera for making lantern plates. 3949. 4840, 26th February, 1896. G. Munroe and J. W. Kelly. Manufacture of oxygen, hydrochloric acid, and other products. 4470. 28th February, 1896. J. A. De Gruchy. Im provements in and connected with saturators, for use in limelight, and the like apparatus. 29th February, 1896. F. J. Stedman. Improve ments in and relating to apparatus for the production of oxygen gas. 25th February, 1896. H. W. Short. A new or improved means for exhibiting or displaying consecutive photographs or pictures of moving objects or figures. 26th February, 1896. R. W. Paul. Apparatus for the reproduction of theatrical and other stage performances. Qnd March, 1896. R. W. Paul. Improvements in apparatus for projecting kinetoscope pictures on the screen. 3rd March, 1896. A.J. Beaumont. for optical lanterns, etc. 8rd March, 1896. Johnson (Latham). Improvements in means or apparatus for exhibiting pictures of moving objects on to a screen or other surface. Tth March, 1896. L. Chapman. Improvements in the separation and obtainment of oxygen from atmospheric air. Tth March, 1896. L. Chapman. Improvements in and in the preparation of materials for use in the retorts of furnaces in obtaining oxygen from atmospheric air. . 7th March, 1896. L. Chapman. Improvements in apparatus for automatically operating cocks and valves, so as to change the 4548. 4166. 4168. 4686. 4748, An arc lamp 4841. 5133. 5134. 6135.