The Optical Magic Lantern Journal (February 1898)

Vv. The Optical Magic Lantern Journal and Photographic Enlarger. GENERAL ADVERTISEMENTS.—Continued. ANTERN slides.—London buildings, streets, etc. (250); Animals and birds at the Zoo (80); Westminster Abbey (80); St. Paul’s (50); Hampton Court (30) ; The Tower (30); Lynton, Lynmouth, and Clovelly (50); Ilfracomlbe (50); The Thames (70); Diamond Jubilee (12); Frozen Thames (4); Tower Bridge (4); Review in Hyde Park (10); Hastings, sunsets, breaking waves, flash of lightning, etc., etc. Send for list; these are first-rate slides at cheap price.—John Stabb, 152, Kensington Park-road, Bayswater. A photographs.—Projecting machine, by Ottway, good as new, cost over £50, has special vertical attachment for showing curtain, titles, or lantern slides between films; used with great success in largest theatres; fitted with every improvement, complete with powerful Ottway jet, stand, and six second-hand films, £20. A triple wanted, see below. STRONOMICAL.—138 mahogany frames, containing 36 beautifully painted slides, including lever and panoramics, complete set, cost £4 12s. 6d., accept £2.— Vevers, Briggate, Leeds. ba erst bi-unial, with objectives, condensers, dissolver, etc., £3; two mixed jets, 5a. each; large gas-bag, 15s.—Vevers, Briggate, Leeds. \ N J RENCH'S Terpuoscope lantern, almost new, cost £6 15s., price £3; Steward’s automatic regulator, 10s. ; large gasometer, 20s.—C. C. Vevers, 163, Briggate, Leeds. ANTED, good lantern slides, with lectures; carh and exchange teonis requisites, telescope, aquarium, sewing machine, hanging lamp, etc.— Williams, Pilton, Shepton Mallet. INEMATOGRAPH films; Gondolas, Venice, 25s. ; Wave study, 30s.; Railway station, 30s.; Roundabouts, 17s. 6d.; Scarboro sands, 35s.; Skeleton and clown, 223. 6d.—Vevers, Leeds. AN'TED.—‘ested gas cylinders, regulators, gauge, cinematographand films; films for sale or exchange, from 17s. 6d. each.—Vevers, Briggate, Leeds. A FEW sets of good second-hand slides, nicely coloured, to clear, very cheap, list free.—T. T. Wing, Chatteria. _ NEL of lantern objectives, go.d make, 8, 10, and 12 inch, cost £5, accept 35s.—I.M., 36, St. Paul's-road, London, N. J IFt; model siides.—9 Billy's rose, 6s.; 4 Gin fiend, 23. 6d.; 24 Marley’s ghost, 163.; 12 Whisky demon, 6s.—Vevers, Leeds. ere d eee lantern wanted, by good maker; would arrange exchange for first-class cinematograph, see above.—Albert Smith, F.R.A.S., St. Ann’s Well, Brighton. Lens slides, highest class, including sunset, moonlight, cloud and brilliant illumination scenes, also temperance and scripture figure studies, cheap.— Apply, G., Sunnydene, Forest-road, Walthamstow. ANTHD, addresses and lists of makers of slides, lanterns (wood and metal), and photographic apparatus; good orders can be placed.—Address, Slides, c/o Journal. HE Abingdon acetylene generator for Janternists is tafe. simple, easy to manage, and thoroughly reliable, 35s.— R. Moss, Abingdor-on-Thames. FPYHE Moss acetyleve lantern jet, with adjustable reflector and independently controlled burners, maximum of light, 10s. 6d.—Moss & Co., Abingdon. THE “INJECTOR” MIXED JET. Patents 10,554 and 24,761/93. oX PRICE SOS. mixed gases then pass through holes in the edge of the plate, and so to the burner. of oxygen is obtained in the ordinary way by a fine tap on the cylinder, or an automatic regulator fitted with a high-pressure spring to deliver at about 15 Ibs. pressure. Three seasons’ experience have fully established the superiority of this Jet over all others. THE FULL 1,800 TO 2,000 CANDLE-POWER (so-called) of the ordinary mixed jet when taking its supply of coal gas direct from the town’s pipe, or even froma bag without any pressure at all. available, it will work just as well with coal gas from a cylinder, should be purchased which cannot offer these alternatives. KO This is the only Mixed Gas Jet which will work at full power with coal gas taken direct from the town supply, and oxygen from a cylinder. In order to effect this the oxygen, on its way to the mixing chamber, is made to pass through the small Injector | in the sketch at a pressure of about 12 lbs. per square inch. In passing through the Injector it sucks a supply of coal gas from the pipe H, which is connected with the house pipe, and forces it forward through the short pipe T into the mixing chamber M. Here the mixed gases meet the baffle plate B, which has the two-fold eftect of silencing the passage of the gases, and ensuring their complete admixture. The The requisite pressure It will yield If atown’'s supply is not We cannot see why ordinary mixed jets As for blow-through jets, we do not know why they should be used at all, when with the same economy and convenience of working, the Injector Jet will give two or three times the light. The working of the Jet is simpler than that ofan ordinary jet. The turning off or on of the oxygen supply regulates automatically the This is a great convenience in actual use. to be touched again when using town's gas. supply of coal gas. When the H tap is once adjusted, it does not need Most existing jets can be fitted with an Injector to enable them to take their coal gas supply from the house pipe. The Jet will in certain cases be sent on approval on deposit of purchase price. Further particulars free on application to MANCHESTER OXYGEN Great Marlborough (Brin’s Patent) CO., Street, Manchester. LTD.,