772 THE COLLIERY GUARDIAN. April 20, 1916. which is similar, but is arranged the opposite way round. The two cams h1 and h2 are guided in fixed slides j in such a manner as to be compelled to perform a rectilinear move- ment parallel to the axis x—y under the action of the oscillatory movements imparted to the shaft f. Within the slots of the cams h1, h2, there engage two rolls kA, k2, one of which, k1, is fixed to the hinge d1 of the two parts of the slideway d of the regulator for the dampers, while the other is fixed to the other extremity c of one of the portions {b—c) of this slideway. The other end a of the other portion {a—b) of the slideway d is compelled by a guide k to remain con- stantly at a fixed distance from the axis x—-y. By reason of their angular configuration (fig. 3), the slots of the cams hl, h2 determine the lateral position of the rolls k1, k2, and oblige them to move in the fixed guide forks I which are disposed transversely of the grate. In the position shown in the drawing all the dampers actuated by the portion a—b of the regulating slideway d are (e, fig. 3’) fully open, while i i is the dampers connected to the portion b—c of the slideway are progressively closed, starting from the point b up to the point c, at which latter the dampers are completely closed, as shown in the case of damper e’ in fig. 3. If, by operat- ing the lever f1 (fig. 2) the cams h1, h2 are pushed into their extreme position towards the right (figs. 2 and 3), the dampers will still remain open at b (like the damper e in fig. 3), and will also open from b to c, since, owing to the action of the inclined, portion of the slot of the cams h2 on the roll k2, the point c will approach the axis x—y, and will place itself on the prolongation of the straight line joining the points a and b. If, by moving the lever f1 in an opposite direction, the cams h1, h2 are brought into their extreme position towards the left, the roll kl under the action of the inclined portion of the slot of the cam H, moves from within outwardly and away from the axis x—y, taking up a position such that the straight line joining it to the point c would be parallel to the said axis. It is evident that under these circumstances the dampers would be completely closed from Hoc, as is the damper, e1, fig. 3, while closing would be progressive-from a to b. For all intermediate positions, the cams h1, h2 will modify the opening of the dampers at the points b and c, but not both at once ; one of the cams only begins to act after the other has completely effected its opening or closing action. (One claim.) 15717 (1915). Improvements in a Gas Producer. P. B. Morgan, of 21, Lincoln-street, Worcester, Massachusetts, U.S.A.—Relates in particular to means for supporting the shell or casing of the producer, whereby the discharge of ashes therefrom may be readily effected, as, for example, by the employment of the ash discharging mechanism set forth and described in Specification No. 6999, of 1915 ; and relates also to an improved means for distributing the blast of air, or air and steam, to the incandescent mass of fuel within the shell of the producer. The figure is a vertical sectional view of the lower portion of a gas. producer embody- ing the invention. The gas producer comprises a shell or casing a, which, in the present instance, is rot at able. The casing a is preferably circular in cross section, and encloses a combustion chamber b, to which coal is supplied at the top through a stationary cover c. Spaced below the lower open end e of the casing a is an ash pan d, suitably sup- ported on rollers or the like, not shown, to allow it to be rotated by means of an annular rack f, in mesh with a driving pinion, not shown. The ash pan d is centrally apertured to provide a blast passage g, which is connected on its under side to any suitable source of blast under pressure. The floor of the ash pan d supports a concentric hollow flanged pipe h, in communication with the passage g. Superposed upon the pipe h is a hollow spider casting i having a plurality of hollow radial arms /, j, in the pre- sent instance three, each communicating through the pipe h with the source of blast under pressure. The arms /, / at their outer ends provide for the support of an annular blast ring k, which is preferably trough- shaped in cross section, having flanges I, I riveted, or otherwise secured, to a metal shell m, forming the outer surface of the wall of vr casing a, said ring and shell thereby co-operating to provide an annular blast cavity n. The annular blast cavity enclosed by the ring k com- municates directly, through a plurality of connections, with the source of blast under pressure. The lower wall g of the trough-like ring k provides a plurality of downwardly open- ing blast -apertures r; said wall q preferably occupies a plane closely approaching the horizontal and overhanging the lower portion of the casing a. By reason of this disposition of the wall q, the tendency of the adjacent ash or incandescent fuel in the horizontal zone of the apertures r to be crowded by the weight of the superposed fuel bed into close contact with the under side of the wall q, is materially reduced, with the result that a well defined space or pocket is maintained in the neighbourhood of said apertures r, permitting an unimpeded passage of the blast therefrom. The radial arms / are each provided with elongated slits or openings v for the escape of blast into the gas producing chamber. The slits'v are protected against the admission of ashes by means of curved covers w slightly raised above the surfaces of the arms j. The blast of air, or air and steam, forced through the pipe h passes outwardly through each of the hollow radial arms /, j into the annular blast cavity n. The latter is, therefore, supplied with blast from three separate sources, insuring thereby an adequate delivery of blast in an annular jet through the openings r. Further- more, the bed of fuel is penetrated by radially directed jets of blast which escape through the elongated slits v provided in the blast arms /, /, and also by an annular jet escaping from the centre of the spider casting i, beneath the edges of a plate x which covers a central opening, not shown, in said spider casting. (Six claims.) . NEW PATENTS CONNECTED WITH THE. COAL AND IRON TRADES. Applications for Patents. [Note.—Applications arranged alphabetically under the names of the applicants (communicators given in italics). A new number will be given on acceptance, which will replace the application number.] Albertazzi, A. (5548). Pumping, etc., installations. Alldays and Onions Pneumatic Engineering Company, and McGowan, R. R. (5278). Liquid fuel furnaces, and apparatus for gasifying or vaporising liquid fuel for same. Alien, R. W. L. (5451). Steam generators, and engines operated thereby. Atumanna Svenska Elektriska Actiebolaget. (5391). Con- tinuous-current generators. Andersen, J. (5398). Insulating compositions for electrical purposes, etc. Axon, 0.', Burn, L., and Gall, W. A. (5332). Supplying fuel to internal combustion engines. Back, A. B. (5257). Sparking plugs for internal combustion engines. Bailey, F. M., and Dale, W. B. (5545). Fluid pressure relief valves. Baumann, K. (5517). Jet air pumps. Bellerby, J. (5306). Stills for fractional distillation of volatile liquids. Benton, W. A. (5358). Manufacture of tar oils. Brayshaw, E. R., and Brayshaw, S. N. (5333). Furnaces. Bricknell, W. H., and Burt, A. (5450). Suction gas producers. British Thomson-Houston Company {General Electric Com- pany) (5377). Dynamo-electric machines. British Thomson-Houston Company {General Electric Com- pany) (5507). Purifying and alloying iron. Brown, J. L. (5262). Electrical alternating-current machines. Burrows, G. H., and Churchward, G. J. (5232). Fire hole doors for steam generators. Chidley, R. (5263). Automatic lock-nut. Chorley, J. C. (5199). Water-level gauges. Cole, H. W. (5206). Gas or oil engine governor. Dempsey, P. (5297). High-speed oil engines. . Downes, C. (5451). Steam generators, and engines operated thereby. Dufour, L. (5499). Speed indicator. Evennette, C. T., Garvin, H. T., and Le Bas, E. (5572). Plates for shoring excavations or retaining or containing .soil, etc. Fairweather, W. {Singer -Manufacturing Company) (5546). Adjustable hangers for power transmitters. Foley, C. B. (5442). Electro-thermic induction furnaces. Forsen, B. (5457). Internal combustion engines. Foy, F. (5364). Apparatus for boring earth, etc. Gaskell, J., and Gray, A. (5392). Combined vaporising and induction pipe for using mixed or heavy fuels in interna] combustion engines. Gilder, W. L. (5394). Tipping wagons. Goldberg,- H. (5445).. Electrical controlling apparatus. Golightly, H. FI. (5218). Valves for internal combustion . engines, etc. Gooder, H. (5326). Two- or four-stroke-cycle radial cylinder internal combustion engines. Graham, E. A. (5406). Signalling or indicating instru- ments, etc. Grant and Company, P. (5562). Tube expanders. Guy, S. S. (5354). Manufacture of hollow castings, etc. Heyl, G. E. (5429). Reduction of ores. Humphrey, H. A. (5411). Internal combustion engines. Jones, H. Sefton- {Nice Ball Bearing Company) (5475). Anti-friction bearings. Kamensky, B. (5308). Suction and force single and multi- stage centrifugal pumps. Latch, C. T. (5292). Clutch or clutch mechanism or/iand • variable-speed gear. Macdonald, D. B. (5551). Manufacture of picric acid. Murray, J. J. (5460). Rotary internal combustion engines. Neuland, A. H. (5526). Dynamo electric machines. Newham, E. (5538). Reducing internal diameter of cylinder of internal combustion engine. Nicholas, D. S. (5266). Miner’s measuring rod or gauge. Norma Cie. (5350). Anti-friction bearings. Orville, T. L..R. d’ (5229). Internal combustion engines. Owen, H. J. and Guy, S. S. (5355). Manufacture of hollow castings, etc. Patrick, H. H. (5242). Two-stroke internal combustion engines. Pheanis, W. T. (5403). Engine starters. Pillois, J. (5317). Machines for manufacturing cores and moulds. Prioleau, W. L.. St. J. (5309). Apparatus for treating peat. Prioleau, W. L. St. J. (5512). Apparatus for preparing peat, etc., for distillation. Reeser, W. (5488). Internal combustion engines. Rendell, A. W. (5227). Lubricating devices. Rusdell, W. J. (5411). Internal combustion''engines. Sadler and Company (5306). Stills for fractional distillation of volatile liquids. Scddon, W. H. (5347). Rotary elastic fluid engines, pumps, compressors, etc. Seddon, W. II. (5348). Rotary pumps, compressors, etc. Shotton, F. J. (5243). Drop hammers. Southall, J. (5484). Internal combustion engines. Steam Fittings Company and Wiesengrund, B. (5452). Steam traps. Straussler, N. (5543). Disc wheels. Suchostawer, D. (5293). Dynamo electric machines-. Watkins, E. (5338). Internal combustion engines. Westinghouse Brake Company (5227). Lubricating devices. Wiesengrund, ]3. (5483). Steam traps. Wilkes. W. T. (5392). Combined vaporising and induction pipe for using mixed or heavy fuels in internal combus- tion engines. ■ ' Winterbottom, T.. (5212). Pig iron breaking machines. Yates, H. J. (5333). Furnaces. Complete Specifications Accepted. (To be published on May 4.) 1914. 3175. Process of producing synthetic ammonia by means of gas generators. Bambach. 16112. Centrifugal pumps and compressors. Weise, Weise, and Lawaczeck. 1915. 3707. Gang drills. Hill. 5258. Boiler flue blowers for removing soot. Bennett. 5323. Miners’ electric safety lamps. Patterson. 5356. Feed water heaters. Schmidt. 5360. Two-stroke cycle internal combustion engines. Lincoln. 5368. Railway rail joints. Arboren. • 5510. Apparatus for crushing ore. Behr. 5623. Electrical alarm systems. Siemens und Halske Akt.- Ges. 5751. Means for reversing internal combustion or explosion engines and for varying and regulating the power thereof. Whiting and Kieffer. 5780. Feed water. heating and water circulating apparatus for . locomotive and other boilers. Willans and Luard. 6116. Pistons, plungers, and the like. Trist. 6789. Feed water heating apparatus. Morison. 6891. Sight feed pressure lubricators. Robinson. 7263. Apparatus for pneumatic conveying of solids. British Thomson-Houston Company (General Electric Company). 7329. Acetylene generators. Smithurst. 7387. Internal combustion engines. Mensforth. 7466. Process and apparatus for casting metal and other fusible substances in moulds. Prazisiongusswerke System Schmidt-Reichhardt Ges. 7523. Means for starting internal combustion engines. Brooks. 7826. Electrical transformers. De Ferranti, and Ferranti Limited. , 7827. Electrical apparatus employing oil insulation. De Ferranti, Roothaan, and Ferranti Limited. 7839. Device for changing regenerating cartridges of breath- ing apparatus. Hanseatische Apparatebau-Ges. vorm. L. von Bremen and Company. 8546. Electric fuse carriers. Robinson. 9544. Smoke indicators for furnaces. Hewitt. 9911. Method and apparatus for effecting removal of solid or liquid matters from hot or cold gas or air. Fisher and Fiddes. 10426. Starters for internal combustion engines. Aron and Hill. 11125. Foundry moulding machine. Harrison and Company (Lincoln), and . Croxford. 11208. Devices for guiding ropes or cables. Pickerings’ Limited, and Fothergill. 11307. Sight feed pressure lubricators. Robinson. 12614. Electrical arrangements for distant control. Fried. Krupp Akt.-Ges. 12667. Safety valves. Ross, and R. L. Ross and Company. 15940. Tipping wagons. Brauns, and N. V. Constructie- werkplaatsen v/h du Croo and Brauns. 16505. Explosives. Powerite Explosives Company. 1916. [Note.—The numbers following the applications are those which the specifications will finally bear.] 60. Locking device for change speed gears with a rocking and laterally movable gear lever. ■ Saurer, A. (firm of). 100001 692. Haulage clips. Lane, F., and Williams, S. E. 100240 GOVERNMENT PUBLICATIONS. Any of the following publications may be obtained on application at this office at the price named post free. Output of Coal : Return, Id. Statutory Rules and Orders, 1916 : No. 188, Unemploy- ment Insurance Regulations, IJd.; No. 196, Prohibition of Imports, No. 4, Proclamation, l|d.; No. 213, Trading with the Enemy, Vesting and Application of Property Amendment Rules, l|d. National Health Insurance : Injuries in War, Compensa- tion Regulations, Provisional, ljd.; Draft, ljd. Gas Undertakings : Return for 1913, Is. 2d.; Local Authorities for 1913-14, 8-i-d. Boiler Explosion Reports : No. 2407, at Messrs. Frazer Brothers, Azork-street, Leeds, 2Jd.; No. 2408, at Heaton Works, Newcastle-on-Tyne, 2Jd. Customs : Form No. 112, lid. per quire; No. 113, lid. per quire. PUBLICATIONS RECEIVED. Report of the Department of Mines of Western Australia for 1914”; China Number of Manchester Guardian, April 18; “Transactions of the Institution of Mining Engineers,” (Vol. 50, Part 4), price 6s. Hull Coal Exports.—The official return of the exports of coal from Hull to foreign countries for the week ended April 11, is as follows:—Amsterdam, 551 tons; Buenos Ayres, 3,376; Dieppe, 2,163; Genoa, 7,541; Dunkirk, 583; Gothenburg, 204; Harlingen, 1,200; Marseilles, 3,885; Naples, 2,005; Portland (M.), 541; Rouen, 3,619; Rotterdam, 958; Stockholm, 1,842—total, 28,468 tons. Corresponding period April 1915—total, 52,886 tons. These figures do not include bunker coal, shipments for the British Admiralty, or the Allies’ Governments. German Coal Liable to Seizure.—The following notice is communicated by the Foreign Office for publication in the Press :—In order to avoid misapprehension, his Majesty’s Government desire to warn neutral ship owners that all coal of German origin, whether cargo or . bunkers, carried by neutral ships is liable to seizure and detention in the same manner as other goods under the Order in Council of March 11, 1915. Masters of neutral ships will therefore in future be well advised to ensure that the coal supplied to them as bunkers is not of German origin, and to provide them- selves with certificates from his Majesty’s consular officers proving that the bunker coal carried on their vessels is sup- plied with the consent of his Majesty’s consul at the port of bunkering.