The Optical Magic Lantern Journal (July 1892)

The Optioal Magio Lantern Journal and Photographio Enlarger. 85 | other suitable source of heat. The case N is filled with water, and when using the apparatus the light X is lighted and heats the water and consequently the upper part of the saturator cylinder A, and thus increases the amount of hydrocarkon vapour imparted to the oxygen. ‘The products of combustion of the. night-light escape at the openings Z, which can be closed by means of the plate Y,as clearly shown. The air for combustion is admitted through the openings V. “Tfit be desired to heat the cylinder A by means of acurrent of air instead of water, the pipe T is unscrewed, the openings Z are closed by the plate Y. The heated products of combustion then pass through the opening S and circulate round the cylinder A, and pass off at R. If desired, the cylinder N may be filled with water to nearly the level of the opening S, or half filled with sand or other suitable material to prevent the lower part of the cylinder A being heated. “Having now particularly described and ascertained the nature of my said invention and in what manner the samie is to be performed, I declare that what I claim is :— (1) A saturator for imparting hydrocarbon vapour to suitable gases for lime-lght and other purposes, consisting of a vessel provided with an inlet pipe for admitting the hydrocarbon fluid to the bottom of the saturator, and tightly packed with suitable material, in the upper part of which is a sinuous passage formed by a perforated or skeleton tube, and connected to suitable inlet and exit pipes for the gas, the whole arranged substantially as described with reference to the drawings. ““(2) A saturator for imparting hydrocarbon vapour to suitable gases for lime-light and other purposes, consisting of a packed vessel supplied with hydrocarbon liquid, and with inlet and exit pipes, by means of which the gas to be saturated can be passed through the said vessel, and of an outer Casing surrounding, or partially surrounding, the packed vessel, and through which a current of hot air can be passed, or which is filled with water heated by a night-light or other suitable source of heat, the whole substantially as described with reference to the drawings. (3) A saturator for imparting hydrocarbon vapour to suitable gases for lime-hght and other purposes substantially as described with reference to the drawings.” 10: SoME time ago we stated that Mr. Robt. C. Murray, late manager to Messrs, Griffin and Son, had opened premises at 8, Garrick-street. We have lately received a catalogue from him, which contains illustrations and details of a number of fine-looking cameras and other apparatus, Editorial Table. Spor Masxs.— The Fry Manufacturing Company have sent us several samples of masks for lantern slides. These have various shaped openings,.and are black on both sides, excepting two white spots on the upper end, and a small space on which to write the subject. The spots greatly facilitate the correct placing of slides in the lantern. ae CAMERA PLUMMET,—When in Edinburgh a week or two i ago, Mr. Baird, of Lothianstreet, gave us a neatly-made and useful plummet to attach to our camera. The plummet is made of brass (stained). The part to the left-hand of illustration is screwed to side of camera, and the plummet shipped into place when required. For architectural subjects, copying, &c., it forms a useful adjunct. EASTMAN’S GELATINOCHLORIDE PRINTING PAPER. —The Eastman Photo Manufacturing Company have just introduced an excellent printing paper, which is more sensitive than albumenised paper, and gives fine tones. We have made prints from some two dozen negatives, which we took three weeks ago in the Orkney Islands; these have toned a splendid colour, and are very brilliant. The paper, cut in sizes from 3lin x 34in. to 10in, x 12in., is put up in packets at the popular price of one shilling. The packet of the former size contains thirty-six sheets, whilst the latter has only four. The paper may also be obtained by the quire in sheets 243in. x 17in. Instead of saying it should have a large sale, we may say it will havea large sale. Stop VALVE.—Messrs. Husbands Bros. have sent us a description of what they claim to be a new valve, which is connected to gas cylinders. From the illustration it appears to be similar to one introduced by Messrs. LA AMT HUSIBAN D. Noakes and Son about a couple of yearsago. Whilst we are well acquainted with the excellency of the latter, we cannot say anything about the merits of the former, as we have not had an opportunity of sccing it. Both valves appear to be patented.