916 THE COLLIERY GUARDIAN. May 11, 1917. The central spans are supported on the circulation lubes 7, and the wings are supported from the inside side sheets 3a and the outermost circulation tubes 7. The central spans are made up from one form of brick f, which has a sub- stantially flat face on one side, and on the opposite side the portions intermediate the ends of the brick are cham- fered from about the middle of said face toward the edges of the bricks to a point beyond the median line of the F/G I .JP. s / / 4 J rp I I jlll.l'lli l[ Il 'll W mAuL MIEt HIM® brick. At one end of the brick, and in each side of the median plane, the corner portions are cut away to provide the supporting seats. At the opposite end, and also on both sides of the median plane of the brick, the corner portions are ribbed, such ribs being preferably formed on the radius of a circle. The wings are comprised of bricks g, which are wedge-shaped, with the large end adapted to be supported on the outermost circulation tubes. At the thinner end the bricks g are rounded on both faces to pro- vide a single point of support, adapted to rest against a side sheet and support the brick either face up. At the opposite, or tube engaging end, are two curved seats, one located, on each side of the median plane of the brick. Intermediate the faces of the brick, these curved portions are depended so .that the brick will engage a circulation tube only in the curved sockets on the ends. The arch A is formed by placing the bricks / constituting the central spans in alternate reversed relation on the circulation tubes 7, and when the bricks are thus assembled, because of the fact that the chamfered portions extend beyond the median plane of the brick, oppositely directed channels h are pro- vided, such channels extending through the arch. The wing bricks g are also assembled in alternately reversed relation, thereby providing similar channels h1 in the wings. The bricks are placed in such a manner that the apertures on opposite sides of any given supporting tube will occur in staggered relation. (Eight claims.) ,105132. Improvements in Links for Chain Crate Stokers and the like. W. J. Cole, of Aberaman-gardens, Abera- man, Aberdare, South Wales.—Relates to links for chain grate stokers and the like. Fig. 1 is a plan looking from the underside; and fig. 2 is a perspective view of a com- plete link. The link comprises a plate A having a flat upper surface A1 adapted to receive the fuel in the fur- nace. At one end of this flat plate is a lug B, extending downwards and centrally situated with respect to the width of the plate. This lug is bored transversely at B1 to receive a joint pin, and extends beyond the end of the plate A. It is formed of a circular shape, the circle being such that the upper surface A1 of the plate A is tangential to it. The plate A is cut away at A2 on its under side to continue the circle of the lug B, and accommodate the lugs on the next link, as hereinafter described. At the other end of the plate A there are provided two lugs C D, one These C1 D1 at each side of the plate and opposite one another, lugs are circular, like the lug B, and are bored at respectively to receive a joint pin. The lugs C and D are spaced apart, to provide a gap E between them, into which the single central lug B of the next link can enter. A central flange F depends from the under side of the plate A in line with the lug B, and preferably it is of the same thickness as this lug. This flange F ex- tends along the under side of the plate A, and is pro- vided with side extensions F1 F2, which connect it to the lugs C and D respec- tively. The lower edge F3 ^7. of the flange F is curved inwards, meeting the circular contours of the lug at each end smoothly, so as to provide a bearing surface which will fit on a cylindrical carrying drum mounted at each end of the grate. When a number of links are assembled to form a chain, the central lug B of any one link has the two side lugs C D of the next link situated one on each side of it. The ends C2 of these side lugs constitute an end wall of a pocket on the under side of the link. The other walls of the pocket are constituted by the vertical flange F and the lateral extensions F1 F2 of the flange and the top plate A. The surface F4 of the side flange F1 constitutes one wall of the pocket of the link, and the under surface A3 of the plate A constitutes another wall. The vertical sides of the link are grooved or fluted as at G, to provide the requisite passages for the admission of air to the fuel on top of the grate. A hole F5 may be provided in the flange F of each link to permit lateral displacement of any coal which may fall on the chain when inverted • the teeth of the sprockets whereby the chain is driven will then displace such coal laterally, and binding of the teeth by such collections of coal is thus prevented. (Six claims.) Donetz Basin Mine Chart.—The council of the Congress of South Russian Mining Industrialists has decided, says a Petrograd paper, to proceed during the current year with the preparation of a 6-verst mining map of the Donetz basin. It is proposed to insert in the map geological data showing the productive series, boundary limestone, the principal thrusts, and the qualities of volatile substances in the coal. Besides this, the chart will show existing con- cessions. The council has asked all managers of coal, anthracite, and iron mines of the Donetz basin to send as soon as possible the most accurate possible plans of their concessions, showing the adjacent properties, with other, data for marking the concessions on the chart. Such plans should show the chief seams, and state the percentage of volatile substances, or, at all events, the distribution of the coal series according to the Latygin classification, and also their situation. HEW PATEHTS CONNECTED WITH THE COAL AHD IROH TRADES. Applications for Patents. [Note.—Applications; arranged alphabetically under the names of the applicants (communicators in parentheses). A new number will be given on acceptance, which will replace the application number.] Alston, C. H. T. Internal combustion engines. (6170) Antoine, T. Internal combustion engines. (6322) Ayers, P. C. Means for promoting circulation of water in locomotive, etc., steam boilers. (6382) Bailey, C. Tipping or discharging wagons. (6079) Beardmore, Sir W. Formation of fluid-tight joints for engine cylinders, etc. (6368) Bradshaw, G. E. Cooling appliances for engines and dynamos. (6334) Briggs, H. Electrical apparatus for detecting, measur- ing, indicating, or recording deviation of boreholes. (6344) British Thomson-Houston Company (General Electric Com- pany). Elastic fluid turbines. (6225) British Thomson-Houston Company (General Electric Com- pany). Centrifugal compressors. (6366) Brookfield, D. Smelting furnaces, etc. (6093) Cook, S. S. Condensing plant. (6297) Dallison, G. J. Rotary internal combustion engines. (6292) Davies, D. Appliances used in manufacture of tin-plates, etc. (6207) ■ Dornan, J. Superheaters for boilers of water tube type. (6432) Dowson and Mason Gas Plant Company, Mawby, E. W., and Wright, A. A. Gas heated annealing, etc., fur- naces. (6351) Dowson and Mason Gas Planl) Company, Mawby, E. W., and Wright, A. A. Doors of gas heated annealing, etc., furnaces. (6353) Dragerwerk H. and B. Drager. Inhaling devices. (6444, 6445) Forth Engine and Motor Works. Means for heating steam generators, boilers, etc. (6160) Gaunt, J. Smelting furnaces, etc. (6093) Hadfield, Sir R. A. Manganese steel. (6272) Hall, I. Melting furnaces. (6126) Harris, A. E. Belts for conveying, driving, etc. (6337) Heane, A. Gas compression plants for refrigeration, etc. (6373) Howe, R. Condensing plant. (6297) Hyland, C. Rotary piston valveless engine. (6189) Ingoldby, M. K. Hydraulic pumps and motors. (6436) Jack, F. B. Rotary pumps, compressors, exhausters, etc.. (6431) Johnson, G. Method of moulding and making ferro-con- crete substitutes for mine, etc., props. (6138) Jones, D. Appliances used in manufacture of tin-plates, etc. (6207) Josling, H. W. E. Means for promoting circulation of water in locomotive, etc., steam boilers. (6382) King, S. H. Means for raising liquids. (6380) Leyland Motors. Limited. Power transmission. (6265) Major, J. L. Manufacture of slag bricks. (6121) Major, J. L. Cooling, solidification, and delivery of pitch. (6314) Mather and Platt. Apparatus for pumping liquids. (6066) Middlesbro’ Slag Company. Manufacture of slag bricks. (6121) O’Donnell, J. P. Oil burning, etc., furnaces. (6157) Otto, E. C. F. Internal combustion engines. (6083) Parker, C. H. Chains for transmission of power, etc. (6323) Parsons, Sir C. A. Condensing plant'. *(6297) Paynter, W. L. Means for. heating steam generators, boilers, etc. (6160) . Perfecta Boiler Circulator Limited. Means for promoting circulation of water in locomotive, etc., steam boilers. (6382) Portham, R. S. Superheaters for boilers of water tube type. (6432) Price, J. B. Double-acting internal combustion engine. . (6346) Prioleau, W. L. St. J. Distilling and condensing appar- atus for gases or other volatile vapours. (6281) Pullin, C. G. Operating internal combustion engines. (6282) Pullinger, T. C. W. Formation of fluid-tight joints for engine cylinders, etc. (6368) Remington, A. A. Internal combustion engines. (6266) Ricardo, H. R. Internal combustion engines. (6089, 6090, 6193) Rollason, A. Manufacture of bricks, blocks, etc., from dolomite. (6261) Rowledge, A. J. Internal combustion engines. (6394) Roxburgh, A. B. Means for heating steam generators, boilers, etc. (6160) Schou, P. Pumps. (6217) Shaw, C. Devices for separating impurities from steam, air, or gases. (6273, 6274) Soc. Schneider et Cie. Mechanism for disengaging main governor in steam hoisting engines. (6375) Stanworth, L. Water power systems. (6233) Stuart, F. L. Apparatus for raising and conveying coal, etc. (6244) Taylor, W. H. Devices for separating impurities from steam, air, or gases. (6273,627*4) Thomas, J. G. P. Power transmission. (6265) Thomas, T. Mining tools, etc. (6057) Turner, C. E. G. Doors of fixed overhead bunkers for charging coal, etc., into travelling hoppers, and means for operating said doors. (6359) Veasey, J. H. Rock drills. (6377) Vickers Limited. Hydraulic pumps and motors. (6436) Walker, W. J. Internal combustion engines. (6146) Worthington Pump Company. Rotary pumps, com- pressors, exhausters, etc. (6431) Complete Specifications Accepted. (To be published on May 24.) [Note.—The number following the application is that which the specification will finally bear.] 1916. 5902. Tinsley, W. P., and Nash, J. G. Gas generators. (105788) 6053. Alexander, R. M., and Betts, C. I. Two-stroke internal combustion engines. (105798) 6173. Walker, J. H. Cranes, derricks, and shear legs. (105801) 6757. lonides, A. C. Furnaces. (105810) 7410. Ordell, W. H. Apparatus for washing coke breeze and other similar materials. (105817) 7445. Smallwood, A. Furnaces. (105818) 8301. Gidden, W. T. Purification of gases. (105826) 9009. Hamer, W. Steam generators and the like. (105829) 9394. Fisher, H. Method relative to the discharging and handling of coal and the like from carts, trucks, and loading banks. (105832) 9668. Taylor, W. Apparatus for washing coal, coke, breeze, and other minerals. (105835) 9772. Walton, H. Turbines. (105837) 11262. Wade, H. (Soc. Anon. A. Cerpelli and Company). Pumps. (105851) 15693. Jordan, A. E. Steam generators. (105869) 16852. Anzani, A. Cylinders of internal combustion engines. (102940) 17119. Wilson, G. A. Manufacture of steel ingots. (105875) 17809. Junkers, H., and Arbenz, W. U. Method of and apparatus for cooling mine air. (102730) 17874. Engelsson, J. E. Centrifugal governors. (102949) 1917. 214. Lucore, G. F. Conveyor belts. (105882) 977. Kling, F. E. Filter medium for cleaning furnace gases. ((105884) 1202. Wright, A. L., and Smedley, F. I. Pit tubs. (105885) 2346. Brotherhood Limited, P., Bryant, C. W., and Welch, J. H. Kemp-. Cylinders of internal combustion engines. (105889) Complete Specifications Open to Public Inspection Before Acceptance. [Note.—The number following the application is that which the specification will finally bear.] 1917. 2866. Radcliffe, C. R. Power transmitting apparatus. (105900) 3397. Deutsch-Luxemburgische Bergwerks- mid Hutten Akt.-Ges., and Klinkenberg, A. Process for the manufacture of mild steel and steel. (105902) 3503. Soc. Lorraine des Anciens Etablissements de Die- trich et Cie. de Luneville. Pistons. (105903) 4573. Akt.-Ges. Brown, Boveri, et Cie. Apparatus for starting engines more particularly heat engines. . (105910) 5168. British Westinghouse Electric and Manufacturing Company. Systems of control for single-phase - commutator motors. (105913) 5463. Tissier, L. E. Process and apparatus for calcining - and roasting certain ores. (105915) 5697. Ravenna, G. Reversible steam turbines. (105919) 5753. Kettering, C. F., and.Chryst, W. A. Engine start- ing systems. (105922) 5891. Maschinenfabrik Oerlikon, and Muller, E. Tubular heat interchangers and surface condensers. (105926) PUBLICATIONS RECEIVED. “The Beama Journal” (Vol. 3, No. 2), April 1917, edited by D. N. Dunlop, price Is. net; “Eleventh Annual Statement of the Trade and Shipping of the Union of South Africa and of Southern and Northern Rhodesia, 1916,” issued by the Department of Customs and Excise, price £1 10s.; “Journal of the South African Institution of Engineers ” (Vol. 15, No. 9), April 1917, price 5s.; “The Russian Market and How to Enter it,” by R. A. Lenski, published by Russo-British Trade Exchange Limited, 16, Regent-street, London, S.W. 1; “Cheap Steam” (Vol. 1, No. 6), May 1917, published by Ed. Bennis and Company; “Journal of the Western Society of Engineers” (Vol. 21, No. 8), October 1916; “Trans- actions of the Manchester Geological and Mining Society” (Vol. 34, Part 8), March 1916; “Transactions of the Manchester Geological and Mining Society ” (Vol. 34, Part 9), April 1916; “Transactions of the Manchester Geological and Mining Society ” (Vol. 34, Part 10), June 1916; “Transactions of the Manchester Geological and Mining Society” (Vol. 34, Part 11), February 1917; “Transactions of the Manchester Geolo- gical and Mining Society” (Vol. 35, Part 1), February 1917; “Concrete and Constructional Engineering” (Vol. 12, No. 5), May 1917, price Is. net. United States Department of Agriculture :—(Bulletin No. 376), “The Flow of Water in Wood Stave Pipe,” by Fred C. Scobey, Irrigation Engineer. United States Geological Survey, Department of the Interior:—(Bulletin 640—B), “Reconnaissance of the Conconully and Ruby Mining Districts, Washington,” by E. L. Jones; (Bulleton 640—D), “Molybdenite and Nickel Ore in San Diego County, California,” papers by F. C. Calkins; (Bulletin 640—E), “Lode Mining in the Quartzburg and Grimes Pass, Porphyry Belt, Boise Basin, Idaho,” by E. L. Jones; (Bulletin 641—B), “The Oil and Gas Geology of the Foraker Quadrangle, Osage County, California,” by K. C. Heald; (Bulletin 641—C), “Possibilities of Oil and Gas in North-Central Mon- tana,” by Eugene Stebinger; (Bulletin 641—D), “Struc- ture of the Vicksburg-Jackson Area, Mississippi, with special reference to Oil and Gas,” by Oliver B. Jackson; (Bulletin 641—E), “ An Anticlinal Fold near Billings, Noble County, Oklahoma,” by A. E. Fath; “Bulletin 627), “The Lignite Field of North-Western South Dakota,” by Dean E. Winchester, C. J. Hares, E. Russell Lloyd, and E. M. Parks; (Bulletin 630), “The Chisana-White River District, Alaska,” by Stephen R. Capps; (Bulletin 635), “Spirit Levelling in Georgia, 1896 to 1914 inclusive,” by R. B. Marshall, Chief Geographer; (Bulletin 636), “Spirit Levelling in Arkansas, 1896 to 1915 inclusive,” by R. B. Marshall; (Bulletin 638), “ Spirit Levelling in New Mexico, 1902 to 1915 inclusive,” by R. B. Marshall; (Bulletin 645), “Bibliography of North American Geology for 1915, with Subject Index,” by John M. Nickles; (Bulletin 649), “Antimony Deposits of Alaska,” by A. H. Brooks; (Water Supply Paper 360), “ Surface Water Supply of the United States, 1913, Part X., the Great Basin,” by Nathan C. Grover, Chief Hydraulic Engineer; (Water Supply Paper 384), “ Surface Water Supply of the United States, 1914, Part IV., St. Lawrence River Basin,” pre- pared by Nathan C. Grover; (Water Supply Paper 387), “Surface Water Supply of the United States, 1914, Part VII., Lower Mississippi River Basin,” by N. C. Grover; (Water Supply Paper 395), “Colorado River and Its Utilisation,” by E. C. La Rue. The French Minister of Public Works has appointed M. E. G. A. Coste, Government Mining Engineer, to the post of Director of Mines at the Central Administration of the Department of Public Works, in succession to M. Frantzen, who has accepted the position of Director of the National Coal Bureau.