The Optical Magic Lantern Journal (August 1898)

124 The Optical Magic Lantern Journal and Photographic Enlarger. The following List, relating to current Patent Applications, is compiled expressly for the ‘‘ Optical Magic Lantern Journal” by W. BP. Thompson c Co., Patent Agents, of $a INTELLIGENCE 6 822, High Holborn, London, W.C., to whom all enquiries : for further information should be addressed. No. Recent PatENT APPLICATIONS. 13162. 18th June, 1898. James Oulton. Improvements in the film operating mechanism of apparatus for taking, printing, and exhibiting series of photographs. 17th June, 1898. La Societe Chaussard. et Cie, and Claude Edouard Vignes. (Date applied for under Patents, etc., Act, 1883, Sec. 103, 22nd November, 1897, being date of application in Belgium.) An improved portable acetylene gas lamp. 22nd June, 1898. James Grieve Lorrain. (The Northern Advertising Company, Nordisk, Reklame Kompagni (Aktieselskab) Denmark.) Improvements in or connected with optical projection apparatus. 27th June, 1898. F. B. Parkinson. An improved generator for acetylene gas lamps. 29th June, 1898. Robert Krayn. Method of and apparatus for producing and projecting series pictures. 30th June, 1893. Arthur Freemore Spooner. (Joseph Dubouloz and the Societé¢ Demaria Freres, France.) Improvements in and relating to apparatus for the production and exhibition of animated photographs. 1st July, 1898. Charles Horace Cox. A method of and apparatus for producing electrical spectacular effects. 7th July, 1898. Arthur Samuel Newman and Newman and Guardia, Limited. Improvements in machinery or apparatus for punching the holes in photographic films for kinematographs and the like. .13573. 13893. 14144. 14369. 14483. 14513. 14965. 15001. in and applicable to acetylene gas lamps. 15139, 8th July, 1898. Leroy Sunderland Buffington. Improvements in or relating to acetylene or hike generators and lamps. Complete. 7 SPECIFICATIONS PUBLISHED. Copies of the foll#wing specifications may be obtained by remitting 1/for each specification to IV. P. Thompson é& Co., Patent Agents, 322, High Holborn, London, }V.C. 17248 of 1897. Darling and Wrench. Cinematographic apparatus. 18925 of 1897. Moss. Gas jets for magic lanterns. 17793 of 1897. Kitchen. Acetylene generators. 17794 of 1897. Kitchen. Acetylene generators for portable lamps. 17565 of 1897. Sandow. Production and exhibition of the pictures of moving objects. Neve. Apparatus for the taking and exhibiting of animated pictures. Moy and Harrison. Displaying a series of photographic images in rapid succession. Miller, Rice and Dunn. Apparatus for taking and projecting photographs. Schulke. Acatylene generator. 19805 of 1897. 25625 of 1897. 5485 of 1698. 10305 of 1898. Cecil Wray and Humphrey ager £e2 GLIANYRY Ory : Bétes and Queries. CARD? Panorama.—We cannot learn that the hall is to be again opened for the same purpose. N. M.— Of the two plans it would be preferable to place a width in the middle and two seams at sides, this will make a better ecreen than having one seam down the middle. Experimenter.We do not know where you can purchase a Scott's warm air saturator. Mr. Scott died a few years ago and the manufacture was discontinued. Perhaps, however, you might obtain an old one by means of an advertisement. H.—Without more particulars than that ‘it does not work properly’’ itis a somewhat difficult matter for us to advice you as to the alteration of your roller curtain. If you give us some definite particulars, and state exactly what you want, we will endeavour to assist you. E. Merton.—Mr. Steward, of the Strand, some years ago introduced @ special form of scale for ascertaining the quantity of oxygen in a cylinder by weighing. This is evidently what you require. A. B. C.—In answer to your question re certain goods, all that we can say is that they are rubbish, and you will be well advised not to waste money in that direction. im. T'ate.—Hard lime can be obtained in many parts of Surrey, but we are unable to give any definite location. Fred Barnes writes :—I am of the opinion that much better results could: be obtained, without the unpleasant glare which is so often seen, if lantern sc-eens were slightly tinted instead of being left pure white. Do you think there woule be any opening in the market for screens dyed of a delicate neutral tint? Ans.—Certainly many pictures ' would look better if projected on a tinted screen, but on 8th July, 1898. John Howard Ross. Improvement / not think it likely that screens such as you the other hand it is a very simple matter to use a small piece of tinted glass in front of the lens, and certainly less expensive than colouring the screen itself. ‘We do suggest would meet with a ready sale. . Showman asks:—Is it possible to convey charged gas cylinders to the Channel Islands? About two years ago the Steamship Companies refused to carry some for me. Reply.—Passenger boats still refuse to carry cylinders; but you could arrange to have them sent by freight boats. R. WI. L. (Australia).—In your warm part of the world you may not have any trouble with the form of saturator of which you give a sketch; it is certainly bulky and the surface is large, but if any trouble is experienced in yapourising the cther, a kot brick wrapped in flannel will assist matters, With the Gwyer jet you have just purchased, and the saturator spoken of, you should get the best of results, but do not forget the hot brick if the weather be cold. Several articles in type have been held cver for waht of space, but will be inserted in next JouRnnaL. Nortice.—Several readers have written expressing their willingness to contribute short articles to our forthcoming ANNUAL. Will those who have not yet sent in their copy kindly do so at their earliest convenience.