The Optical Magic Lantern Journal (November 1895)

The Optical Magic Lantern Journal and Photographic Enlarger. mahogany base, the remainder being constructed of Russian iron and brass. The racking out is done by a screw in front, the final focussing being performed by the lens pinion. The lantern is meant expressly for an incandescent gas burner, and, as the mantles in connection with these have been lately improved, small sized discs can be well illuminated. | GODWIN REGULATOR. The name of this reguiator is evidently obtained from that of the street in which the premises of Messrs. Riley Brothers is situated in Bradford. four inches in diameter, and it weighsa trifle over two pounds. It is attached to the cylinder at a, the gas passes up the tube B and into the upper portion of this tube at the part where it is of larger diameter a valve rod is fitted, the end of which comes in contact with i‘ the end of the lever c. When gas is admitted, a certain quantity passes into the regulator and forces a rubber bellows slightly up into the part r,where a spring serves to force it back again thus giving ample working pressure. As the bellows pushes against the spiral spring, it draws up the portion G which is attached to the end of a short lever p. The end of pv which is nearest its fulcrum is attached with a short bar to the far end of the lever c, so that a light movement of D exerts a very great force by means of c on the end of the valve pin spoken of. As soon as the bar G returns to its normal position a little | gas is allowed to enter the chamber £, and in this manner a steady pressure is kept up at the jets. The circular ! part, as shown in the | illustration, measures | 195 Editorial Table. Binp1inG Tapes.—Mr. Tylar, of Birmingham, bas forwarded to us a sample box of substantial slide-binders. These are of linen tape, coated with a particularly adhesive compound. PLEASURES oF A First Pipe.—The set of three slides. bearing this title forms avery good story without words, They are from negatives by Mr. Winter, of Derby, and are published by Mr. Tylar, of Birmingham. “ATHLETIC Sports, GAMES AND Toys,"’ which was. dead and is alive again, begins its new career in a healthy sort of way, It is published by Drane, Chant & Co., of. Salisbury-square, and is edited by Mr. Whitfield Crofts. The intention is to bring it out monthly at twopence.c{ +; . :0: Patent Intelligence. The following list, relating to current Patent Applications, ts compiled expressly for ‘‘The Optical Magic Lantern Journal” by a registered Patent Agent. For further information apply to ‘he Patent Department, ‘' Optical Magic Lantern Journal," 56, Chancery Lane, London, W.C. No. 15360. RECENT PATENT APPLICATIONS. 15th August, 1895. J. L. Willson. Improvements in the production of calcium carbide. 16th August, 1895. J.H. Exley. Improvements in apparatus for generating acetylene gas. 21st August, 1895. F. Sternberg. Improvements in, or relating to the production of photographic transparencies or positive pictures. 26th August, 1895. H. Gabe. Improvements in automatical apparatus for decomposing carbide of calcium. 27th August, 1895. C. A. Chase. Improved stereopticon panorama apparatus. 3rd September, 1895. E. Duerelet and L. Léjeune. Improvements in apparatus for use in the production and utilisation of acetylene. 6th September, 1895. R.Campe. An improved generator for acetylene gas lamps. 21st September, 1895. F. Fowler. An improved saturator for lime-light apparatus. 25th September, 1895. W. Friese-Green. Improvements in photographic cameras and magic lanterns. 7th October, 1895. C. D. Abel (E. Gaumont). Improvements in photographic enlarging apparatus. RECENTLY-PRINTED SPECIFICATIONS. Copies of the following specifications may be obtained by Temitting 1/for each specification to The Patent Depart-. ment, ‘* Optical Magic Lantern Journal,’ 56, Chancery Lane, London, W.C. 15643 of 1894. Airs. 15402. 15714. Optical; lantern. 16916 of 1894. Taylor. Lime and electric lights. 13959 of 1895. H. L. A. Lapointe. Manufacture of. oxygen. 20095 of 1894. Tomkinasn. Magic}Lanterns. 13959_0f 1895. Lapointe. [ Oxygen.