1128 THE COLLIERY GUARDIAN. December 8, 1916. round at a relatively small radius into another tangential surface at right angles to the first-mentioned, so that the part of the rolling member to which these surfaces pertain is pear-shaped. The other bearing surface of the rolling member (of similar shape) is arranged with the protuber- ance projecting in a direction opposite to that of the protuberance of the first bearing surface. The bearing sur- faces of the rolling member may be flanges cast integrally with the member, which latter may be mounted upon a shaft k, by which it is coupled to the con esponding rolling member on the other side of the trough. (Two claims.) 101947. Improvements in Liquid Fuel Furnaces. W. A. White, of 601, Washington-street, New York.—Relates to a system of liquid fuel burning in furnaces, wherein regulated quantities of liquid fuel are to be atomised in conjunction with suitable proportions of air, within the furnace, the air being initially pre-heated within the furnace front, which is hollow. Fig. 1 is a front view, partly in section, of the furnace front fitted to a Howden draught furnace; and fig. 2 is a vertical section on the line 2—2 of fig. 1. The furnace 1 is provided with an end frame 2, which forms a partial closure, and supports other elements of the hollow front. Said frame 2 is circular in form, and provided with openings for remov- able covering members. Secured to frame 2 are removable members, comprising a wall separating the furnace interior from the hollow front. The member 3 is an angular plate, reinforced with a flange 3% which lies across the opening in the lower portion of plate 2. The edges of the members 3 and 4, together with the furnace base, surround a space between the lower members, covered by a heating plate 6, removable by latches 7, lodged in socket pieces 8 on the mem- bers. The plate 6 is provided with a series of curvilinear ribs 6", whose inclination is tangential relatively to the longitudinal axis of the furnace. The lower members sup- port on their top edges the upper member or plate 5, and said members have on their top edges ledges, e.g., 4 b. Plate 5 is provided, on its inner surface, with a flange 11, and curvilinear ribs 5% inclined tangentially to the longitudinal axis of the furnace, to co-act with the ribs 6a, in imparting circular direction to the entering air. A seat describing part T wTh * ,;^-i oq ~ To* I ,L 455--[ft of a circle is formed in the upper edge of the member 3, to receive and support an air inlet tube 12, whose upper portion is embraced by the member 5, whose lower edge describes the remainder of a circle, to co-ordinate 3 and 5 in providing an annular enclosing seat for said tube. The tube 12, which is constricted centrally, and outwardly flaring at both ends, has a radial flange 13, which abuts against the members 3 and 5, said flange being provided with extending lugs, having bolt holes by which it may be bolted to said members. Thus the tube 12, which is of Venturi character, comprises the passage or inlet whereby air of combustion enters the furnace from the hollow front. The outer wall of the hollow front includes an upper cover plate 15 and a lower door 16 mounted on hinges 17. Also in the upper portion of the cover plate 15 is a door 18, hinged at 18 S and closed by latches 19. The cover plate 15 carries, on its inner surface, a tubular jacket 20, to receive a fuel burner, the support for said jacket having a bushing 21, which centres the burner within the jacket, leaving an annular clearance, and said jacket has air inlets 22, in order that a hollow column of air may issue about the fuel jet. A bell-shaped deflector 23 is slidably adjustable over jacket 20, and, with the jacket, lies centrally within the inlet tube 12. The deflector 23 is adjustable by means of a rod 24 and handle 25. Also slidably adjustable upon jacket 20 is a conoidal valve 26, to regulate the quantity of air admitted to inlet tube 12. When the furnace is to be operated under natural draught, the ports 27 and checks 32 are closed, and the doors 16 and 18 are opened; but when forced draught is to be used, then the doors 16 and 18 are closed, and the ports 27 and checks 32 are opened.* (Seven claims.) Partnership Dissolved.—The London Gazette announces dissolution of the partnership of W. Walker and J. Larking, trading as A. and R. Brown and Company, engineers, brass founders, etc., Regent-road, Liverpool. Australian Coal Strike Settled. — The Australian miners have secured an eight hours day, bank to bank. The owners will be compensated for any loss. The settlement has caused intense satisfaction throughout the Commonwealth, as indus- trial chaos seemed imminent. It does not relieve the situa- tion immediately. The Commonwealth still controls distri- bution, until the coal output becomes normal. The announce- ment of the settlement w’as loudly cheered in the Federal and State Parliaments. The coal mines have also been conceded the abolition of the double shift system. Owners will be compensated by an increase in the selling price. Industrial Research .and Fuel Economy.—The Government has decided to establish a separate Department of Scientific and Industrial Research for Great Britain and Ireland under the Lord President of the Council, with the President of the Board of Education as vice-president. Subject to the con- sent of Parliament, a large sum of money will be placed at the disposal of the new Department, to be used as a fund for the conduct of research for the benefit of the national industries on a co-operative basis. Mr. H. Frank Heath, C.B.', has been appointed permanent secretary of the new Department. Lord Crewe informed a deputation that he understood the Advisory Council and the Coal Committee had agreed upon the beginning of a series of researches which were designed to start and to establish a scientific basis for the introduction of a systematic economy in the use of fuel. The intention was to begin with an economic survey of all the various coal measures in the United Kingdom, to examine and experiment on the behaviour of different strata of coal under various furnace tests, and the suitability of different kinds of coal to different processes of coking, and so on. MEW PATENTS CONNECTED WITH THE COAL AND IRON 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.] Acieries et Fonderies d’Art de Haine-St.-Pierre et Metal- lurgique Lilloise Soc. Anon. (17153). Ramming devices for moulding. Avery, W. and T. (17105). Automatic weighing apparatus. Banks, M. G. (17299). Pulley blocks or tackle. Barrett, M. (17304). Porous mineral product. Berriman, A. E. (16985, 17008). Internal combustion engines. Bjornstad, J. (17015). Turbine centrifugal pumps. Blakeborough, R. A., and Broadhead, J. B. (17259). Pres- sure regulating or reduction valves. British Goke Ovens Limited (17269). Chimney stacks or shafts. Buchanan, J. (17248). Pistons for internal combustion engines. Bullivant’s Aerial Ropeways Limited (17145). Rope run- ways. Butcher, 0. A. (17024). Valve gear of internal combustion engines. Chance, T. M. (16994). Safety lamp. Chemical and Mechanical Processes Company, Harvey, J., and Hulme, F. A. (16955). Utilisation of air currents for power purposes. Cherry, L. B. (17250). Synthetic production of hydrocarbon compounds. Conner, S. J. (17083). Apparatus for heating and distri- buting air for w’arming workshops, rooms, etc. Constantinesco, G. (17130). Mechanical wave transmission of power. Coombes, W. (16971). Toothed and chain gearing. Cooper, T. L. R. (17292). Electric motors. Crenshaw, H. B. (17002). Regenerator. Donaldson, J. (17191). Apparatus for handling ore, etc., in bulk. Douglass, A. E. (16962). Apparatus for making briquettes. Edwards, M. (17301). Pumps. Enzer, J. (16986). Internal combustion engines. Frewen, E. J. (17177). Apparatus for converting hydraulic pressure into energy. Frewer, S. H. (16983). Apparatus for inserting detonators in fuses, etc. Frewer, S. H. (16984). Drop test machine for fuses. Furse, A. D. (17318). Disintegrating machines. Gazeley, W. (17094). Pit prop. Graesser, N. H. (17328). Drying picric acid. Graesser, N. H. (17329). Process for separation or recovery of picric acid. Gray, A. O. (17145). Rope runways. Gray, R. (17147). Steel making, etc., furnaces or mixers. Gray, T. F. (17128). Steam superheaters. .Hall, I. (16961). Means for casting. Howies, F. (17332). Nitrogen fixation furnaces. Jackson, F. (17320). Device for facilitating drilling of shot- holes in tunnelling. James, H. V. (17011). Automatic control apparatus for electric motors. Johnston, H. B. (17234). Crank gear for engines, etc. Jupe, E. J. (17128). Steam superheaters. Kagan, M. L. (17075). Pistons and their appurtenances. Kershaw, J. (17280). Furnace for treatment of spent oxide. Kynoch Arklow Limited (16989). Explosives. Lecesne, N. (17289). Manufacture of refractory materials, and their use in manufacture. Lester, G. W. (16982). Safety appliances for pit cages, lifts, etc. Mather, E. (17329). Process for separation or recovery of picric acid. Mabthewman, W. (17086). Internal combustion engines. Michelson, C. (17134). Power transmission apparatus. Moss, W. E. (17173). Expansible packing rings for piston valves, etc. Parker, T., and Parkers Inventions Limited (17053). Pul- verising or grinding machines. Parker, T., and Parkers Inventions Limited (17054). Pul- verising machines. Pirmez, L. H. (16989). Explosives. Pulsometer Engineering Company (17015). Turbine centri- fugal pumps. Purchase, A. W. (17216). Eduction pipe for air lift pumps. Rimmer, G. (17284). Coal-cutting machines. Scott, E. K. (17332). Nitrogen fixation furnaces. Semmler, C. (17029). Internal combustion engines. Sifton, W. B. (17224). Chimney for miners’ lamps. Simon, E. D., and Simon Limited, H. (16953). Suction nozzles for pneumatic apparatus for transporting grain, etc. Smith, D. V. H. (17083). Apparatus for heating and distri- buting air for warming workshops, rooms, etc. Smith, H. (17174). Means for economising fuel and con- suming smoke in steam boiler furnaces. Thomas, T. J. (17158). Apparatus for detecting firedamp in mines. Wellman, Seaver, and Head (17147). Steel making, etc., furnaces or mixers. Williams, E. (17328). Drying picric acid. Wilson, G. A. (17119). Manufacture of steel ingots. Yarrow, H. E. (17217). Air valve for furnaces using liquid fuel. Young, C. (17126). Internal combustion engines. Complete Specifications Accepted. (To be published on December 21.) 1915. 16493. Valve mechanism of internal combustion engines. Chorlton and Livens. 16526. Manipulating mechanism for coal gas generating apparatus. White (Riter-Conley Manufacturing Company). 16581. Heating of feed water for steam generators. Gowans. 16658. Treatment of peat for manurial and other purposes. Bottomley. 16686. Feeding of steam generators. Watson. 16830. Processes and apparatus for converting heavier oils into lighter oils. Lamplough. 17405. Steam condensing plant. Morison. 17902. Crucible furnaces, and the art of firing the same. Keith and Keith. 1916. [Note.—The numbers following the application are those which the application will finally bear.] 495. Furnaces heated by oil fuel for melting metals. Ward, J., Townsend, A. P., and Forgham, R. G. 102278 1170. Steam superheaters. Smith, V. 102282 1’515. Multi-cylinder internal combustion engines. Craig, A. 102286 1757. Apparatus for cleaning the tubes of steam boilers. Reiter and Gruenwald. 102287 3831. Boring and drilling tools. Allen, W. G. 102303 3909. Transporting apparatus, more especially intended for charging articles into furnaces and withdrawing them therefrom. Smith, J. 102304 3970. Disc valves. Key, T. D. 102306 5212. Pig iron breaking machines. Winterbottom, T. 102317 5333. Furnaces. Yates, H. J., Brayshaw, S. N., and Brayshaw, E. R. 102318 7205. Miners’ lamps. Findlay, M. 102327 9574. Device for connecting and disconnecting burner tubes of liquid fuel furnaces. Richards, C., and Richards, A. 102346 9867. Water tube boilers fitted with superheaters. Babcock and Wilcox (Babcock and Wilcox Company). 102352 9378. Means for varying the stroke of a reciprocating engine. Wilkinson, H. O. 102353 9941. Belt and fixed bucket elevators. Marston, F. 102354 10064. Intercepting valves for compound engines. Davies, H., Mason, P. F., and Wood, A. 102355 12672. Apparatus for raising and forcing liquids by means of compressed air. Chapman, T. S. 102362 13060. Lids or covers for crucible furnaces. Keith, J., and Keith, G. 102365 15878. Grabs. Gillot, H., and Roos, I. 102153 Complete Specification Open to Public Inspection Before Acceptance. 1916. [Note.—The number following the application is that which the application will finally bear.] 16673. Centrifugal compressors. Akt.-Ges. Brov\n, Boveri et Cie. 102382 In the Patents Court, the Controller announced that a recommendation would be made to the Board of Trade that a licence should be granted to Mr. R. Tilden Smith to use the German-owned patents Nos. 17343, 17344, and 25985 of 1907, for blast furnace plant to treat iron ore. The patents were said to have been used before for lead, copper, and zinc con- centrates, not for iron ores. GOVERNMENT PUBLICATIONS. *** Any of the following publications may be obtained on application at this office at the price named post free. General Rules for Factories Licensed under Explosives Acts, 1875 (Poster), 2|d. Trading with the Enemy (Black List No. 13), Nov. 24, lid. Friendly Societies’ Bill, Id. Customs, Form 15 (Sale) Revised, Is. 3d. per quire. Munitions Memo. No. 15 : Effect of Industrial Conditions upon Eyesight, l|d. Statutory Rules and Orders, 1916 : (No. 791), Munitions, l|d.; (No. 797), Locomotive (Scotland), l|d. PUBLICATIONS RECEIVED. Economic Geology. By H. Ries. 4th Edition. London : Chapman and Hall Limited. Price, 17s. net. Mining Mathematics (Senior Course). By S. N. Forrest. London : Edward Arnold. Price, 5s. net/ “ Transactions of the Mining and Geological Institute of India” (Vol. 11, Part 1), October; “Records of the Geological Survey of India ” (Vol. 47, Part 3) (London : Kegan, Paul, Trench, Triibner and Company), price one rupee; “An Investigation of the Coals of Canada, with Reference to their Economical Qualities,” with an extra volume, “ Weathering of Coal,” by J. B. Pcrter (Mines Branch, Canadian Department of Mines); “Bulletin of th British Chamber of Commerce for Italy ” (Vol. 5, No. 4), October; “ Proceedings of the Engineers’ Society of Western Pennsylvania ” (Vol. 32, No. 8), November; “ The American Mining Congress Journal ” (Vol. 2, No. 11), November. CATALOGUES AND PRICE LISTS RECEIVED. Edward Le Bas and Company (Dock House, Biiliter-street, London, E.C.) have forwarded a copy of “ The Combina- tion ” Metric Ready Reckoner, arranged by Mr. C. T. Evennette, an extremely useful arrangement of simple and compound conversion tables from English weights and measures into metric, and vice versa, printed in three colours, so that the items stand out with particular distinctness. A. Hirst and Son Limited (Meadow-lane, Bradford).— Two circulars are devoted to certain well-known productions of the company—the “ Crescent ” electric shot-hole drills and the “ Crescent ” gate-end switchboxes. The latter have been designed primarily for use with the “ Crescent ” coal cutters and drills, and are so arranged that the plug connector from the trailer cable is interchangeable with the one on the machine, thereby permitting a revensal of the cable end for end if necessary. The circular points out that this gear is as nearly foolproof as possible, being simply but efficiently inter- locked throughout. The claim is not likely to be disputed by anyone who has seen the switchbox in operation. Regarding drills, some of these productions have been in use for seven years, and are drilling from 18,000 to 30,000 shot-holes per machine annually, at a moderate cost per hole, one instance mentioning 2-4d. per hole, against Is. for hand boring. Illus- trations are given of the drill with alternating current motor, and another with direct current motor. Both are in extensive use.