The Optical Magic Lantern Journal (November 1899)

The Optical Magic Lantern Journal and Photographic Enlarger. 155 of the plate forming the face of the condenser block; pp are the two lower pillars of the stage, and at R there is a recess formed by taking off the corner of the runner with the file, before the stop is put on. There isa reason for this. Any unconsidered trifle of foreign matter getting on to the runner during the show, such as a minute chip of glass from a mechanical slide, or splinter from one of the frames, would get pushed in front of the succeeding slide and jamb between the stop and the slide, keeping the latter out of | its correct position; but, this recess being provided, it falls harmlessly into it and gives no trouble. (To be continued.) THE RILFORD OXYGEN GENERATOR. In our issue for January last, we gave full particulars and drawing of this useful automatic generator, which has been introduced by Riley Brothers, Ltd., of Bradford, Yorks. The generator first introduced, now known as the Rilford No. 1, was for the most part intended for use with single lanterns, but anew generator on the same principle but of slightly greater capacity has also lately been placed upon the market. This generator, which is known as Rilford No. 2, is capable of supplying the most ravenous jet, and with jets of average gas | consumption will supply a bi-unial lantern. Messrs. Riley have issued a neatly got up pamphlet descriptive of these automatic oxygen generators ; this we have read with the greatest care, and with our knowledge of the apparatus itself and its thorough performance, have pleasure in endorsing the statements contained therein. SPEARLING’S CHILDREN’S OPAQUE LANTERN. This lantern has been designed by Mr. Spearling solely with the idea of showing opaque objects and pictures on the screen. The whole of a drawing or painting 5 inches square can be shown 5 feet in diameter on the screen, with sufficient illumination for a small audience. Flowers, shells, the face and works of a watch, coins, and curios of various sorts can also be well exhibited. It is fitted with two incan descent gas burners, which only require ordinary | house gas brought to them by an india-rubber pipe from the nearest gas bracket. It is, therefore, absolutely safe, and requires nothing but turning on the tap and lighting, and is at once ready for use. At the back of the lantern can be attached a double roller carrying a roll of paper on which children can make drawings and paintings, which can then be projected as a moving panorama on the screen. Christmas cards, butterflies, and similar objects show excellently. The instrument is extremely simple and easy to use. It may be obtained from Messrs, Newton « Co., 3, Fleet Street, E.C. ae S| PATENT INTELLIGENCE. ic pohcbehb-b-b-hebebepded ibe || The following List, relating to current Patent Applications, is compiled expressly for the ‘' Optical Magic Lantern Journal” by W. P. Thompson & Co., Patent Agents, of 322, High Holborn, London, W.C., to whom all enquiries for further information should be addressed. No. 18294. ReEcENT ParTeENT APPLICATIONS. llth September, 1899. Henry Wheeler. A method of showing a series of pictures in animation. 19th September, 1899. George Frederick Hatton. Improvements in appparatus for viewing and exhibiting living pictures or animated photographs. 27th September, 1899. H. O. Foersterling. Improvements in and connected with the 1 production of photographs. (Complete.) . 19593. 29th September, 1899. Arthur Lewis Adams, Walter Mallett, and Charles Willis Beevor. A new or improved optical appliance for | use in connection with view finders for | photographic or other purposes. 18924, » 19474.