982 THE COLLIERY GUARDIAN. Mat 9, 1913. perforations permit the heated products of combustion to pass into the coil K, which they traverse before emerging through the orifices O into the water at the bottom of the calorimeter. The part of the coil containing the orifices 0 is so shaped that the products of combustion will leave the coil on one side only of the calorimeter and rise through the water approximately midway, radially, between the combustion chamber and the outer vessel; the object being to enable the gases to rise as freely as possible and with little resistance from the combustion chamber or the outer vessel. The coil K ensures that the greater part of the heat of combus- tion is communicated to the water before the gases reach the water. The combustion chamber is formed of a glass vessel B, closed at its ends by covers E and F. The ends of the glass vessel butt against rubber rings H, H, the whole being held together by clips or tie-pieces G. The latter are shown in greater detail in fig. 2. The clips G may be attached to the lower cover by pins, as shown in fig. 6. To enable the same clips to be used with slightly- different lengths of glass B or with the ends slightly out of parallel, the clips may be constructed with adjustable or elastic ends, as shown in figs. 4 and 6, but preferably as shown in fig. 5, the helical spring in the latter permitting of considerable automatic adjustment of the length of the clips to suit the glass vessel B. Each of the clips G is constructed with a hook or projection L for the purpose of supporting the lower cover of the combustion chamber during the assembling or disassembling of its parts, or during the process of conducting part of the experiment, as shown in fig. 3. In this position, the crucible C is arranged to be above the water. The-combustion chamber is main- tained approximately in a central position in the outer vessel A by the portions P of the clips. The oxygen tube M is capable of longitudinal adjustment, and water is prevented from gaining access to the combustion chamber through the top cover by the gland IT. To enable any water to escape from the combustion chamber, the projec- tion or boss that holds the perforated tube D is pierced with a small hole N, leading down into the coil K. (Six claims.) NEW PATENTS CONNECTED WITH THE COAL AND IRON TRADES. Applications for Patents. 9893. Electrically-operated drill of the percussion type. T. T. F. Wall. 9909. Process for the wet extraction of copper, silver and other metals from the ore. H. C. Woltereck and J. Moeller. 9910. Process for burning lime. H. C. Woltereck and J. Moeller. 9922. Ambulances. K. Walser-Mbsli. 9923. Method of and apparatus for holding percussive tools and implements. A. L. Haas. 9935. Coating metallic sheets with other metals. S. O. Cowper-Coles. 9938. Reversing gear for multiple expansion steam engines. J. G. Maxwell. 9941. Method of making metal pipes. H. Mayweg. 9946. Portable electric battery lamps. B. Pordes. 9961. Production of coke in gas retorts. H. W. Woodall and A. M. Duckham. 9963. Working combined reciprocating engines and turbines for ships’ propulsion. Swan, Hunter and Wigham Richardson Limited, and M. O. Warl. 9988. Carbonisation of coal. V. B. Lewes. 9997. Steam or gas turbine plant with combined hydraulic and mechanical gears. H. Fottinger. 10011. Exhaust arrangements of certain steam engines. W. Eastwood, C. Becker, and Newton, Bean and Mitchell. 10035. Water-tube boilers. E. C. R. Marks. (Diamond Power Specialty Company, United States.) 10036. Apparatus for the direct conversion of heat into electricity. J. Gyuris. 10040. Manufacture of products from mineral oil. New Oil Refining Process Limited, and E. L. Lomax. 10048. Rotary pumps or blowers. J. Robertson. 10066. Apparatus for washing or scrubbing gas. P. E. Williams. 10073. Electrically operated drills. H. W. Darby and F. J. West. 10092. Percussive tools. W. J. Mellersh-Jackson. (Ingersoll- Rand Company, United States ) 10110. Apparatus relating to the withdrawal of air and water from steam condensers. D. B. Morison. 10114. Fuel saver and smoke consumer for retorts, boiler furnaces, and the like.. H. Ormerod. 10123. Self-discharging hopper truck for conveying coal, gravel, and the like, and regulating its automatic discharge. W. J. S. Perkins. 10128. Arrangements for automatically stopping pneumatic tools. Soc. Anon, des Ateliers Leonard Rooour. 10136. Steam generator, condenser, and like tube-stopping means. R. Houston. 10139. Drilling and boring apparatus. W. G. Bambridge. 10151. Conveying apparatus. F. B. Clark and A. Warman. 10156. Treatment of coal tar or its products for the removal of the properties therein tending to induce pitch cancer. H. W. Robinson. 10163. Automatic apparatus for spraying or watering coal in transit in coalmines. W. W. Good and G. Goch. 10164. Flexible electric conductors. Western Electric Company Limited. (Western Electric Co., United States.) 10180. Clinometer. W. West. 10201. Grabs. Stothert and Pitt Limited and G. T. Peters. 10207. Screw or worm conveyors with special reference to the charging of rotary reduction furnaces. A. E. Bourcoud. 10213. Process of and apparatus for distilling and crocking heavy and light hydrocarbon residues. A. F. G. C. P. J. von Groeling. 10214. Stoking-devices for pulverulent fuel. K. H. V. von Porat. 10225. Method of cleaning and coating inside and outside of tubes with metals or alloys by electro-deposition with the aid of mechanical devices. C. Haythorpe. 10234. Means for promoting combustion in boiler furnaces. G. Stewart. 10236. Portable drilling-machine. W. Holdhusen and W. R. H. Holdhusen. 10246. Composition for boiler covering and other heat- retaining purposes. W. C. Woods. 10249. Apparatus for sintering ores. J. E. Green wait. 10253. Regenerator coke ovens. E. Lecoeq. 10265. Process for separating zinc and other metals oxidisable by the means of steam at an elevated temperature from other metals in the ore. H. C. Woltereck and J. Moeller. 10266. Exhaust steam heat economisers. Fried. Krupp Akt.-Ges. 10281. Process for treating fusible domestic and commercial refuse. H. Backer and H. Ungar. 10308. Extraction of metals. W. E. Gibbs. 10341. Apparatus for and process of purifying blastfurnace and other gases including air and freeing them from dust particles. A. H. Smith and D. Bagley, trading as Smith and Bagley,'and M. E. Feilmann. 10413. Means for removing scrap from sheet metal stampings. S. Timings. 10424. Vertical retorts for the continuous manufacture of gas. H. J. Toogood and R. Dempster and Sons Limited. 10471. Percussive hammer drills and like tools. J. F. Ovenden. 10482. Centrifugal machine for the manufacture of foundry cores. M. Fauquet. Complete Specifications Accepted. To be published on Hay 22. 1912. 2637. Means for feeding work-pieces in pilger rolling mills. Weiser and British Mannesmann Tube Company. 9773. Steam-superheaters for tubular boilers. Hughes. 9975. Turbines. Josse and Christlein. 10295. Railway-wagon coupling. Taylor and Aldrich. 10324. Clamping devices for supports such as mining props or the like. Gorissen. 10343. Sheet piling. Upson. 10653. Pumping arrangements. Submersible and J.-L Motors Limited and Poynder. 10654. Electric motors. Submersible and J.-L. Motors Limited and Cooper. 10655. Dynamo-electric machines Submersible and J.-L Motors Limited and Poynder. 12327. Means for securing galvanised iron sheets and for analogous purposes. Mitchell and Gell. 12542. Composition of matter for treating cast iron and steel. Marsh. 12795. Pneumatic percussive apparatus such as ore stamps and the like, and the method of operating same. Fraser and Chalmers Limited and Behr. 12968. Self-discharging bucket. Russell. 13229. Fuel-feeding apparatus for gas producers. Pineau. 15092. Traversers for overhead runways. Herbert Morris Limited and Haslam. 15966. Method of hardening iron and steel. Boyd. 16153. Electric cable sheath. Western Electric Company. (Western Electric Company.) 16373. Circular gas or water-tight covers. Callender’s Cable and Construction Company and Anderson. 16802. Turbines. Dunn and Dunn. 16809. Balancing of rotating masses. Soc. Anon, pour L’Exploitaticn des Procedes Westinghouse Leblanc. 17279. Means of carrying ambulance stretchers in mines and the like. Hibberd. 17680. Protective devices for electric circuits. British Thomson-Houston Company (General Electric Company). 18770. Combined power cutting-table and pusher for brick- making and the like. Sayer and Needham. 18870. Lubrication of and bearings of cutter discs of cutter machines for use in mining coal and other minerals. Mavor and Coulson Limited and Moore. 19508. Rock drills. Gilman. 21923. Furnaces. Hill. 22867. Safety-couplings for colliery trams and similar wagons. Alford, Rees, and Jones. 23439. Furnaces. Hill. 23582. Process for making ribbed sheet metal. White. 25097. Screening apparatus. Compagnie des Transporteurs, Simplex, and Fouohy. 26526. Rotary blowers, rotary pumps, and the like. Shepherd and Hayes. 26527. Fans or air propellers. Shepherd and Hayes. 28072. Direct recoveryfof ammonia from the products of the destructive distillation of coal or the like. Carl Still (firm of). 28906. Rotary pumps. Siemens Brothers Dynamo Works (Siemens Schuckertwerke Ges.). 1913. 62. Dampers for use in connection with steam super- heaters. Bolton. 77. Method of and apparatus for recovering iron and steel from waste enamelled articles. De Back. 1700. Apparatus for loading and screening coke. Coppee. 5073. Portable electric battery lamps. Joel. 5417. Rotary pumps and similar rotary machines. Klinger. 6265. Operating compound steam turbines. Bergmann Elektricitats- Werke Akt.-Ges. Complete Specifications open to Public Inspection before Acceptance. 1913. 6248. Apparatus for regulating the superheating tempera- ture of steam. F. Krupp Akt.-Ges. Germania Werft. 9354. Centrifugal pumps. Siemens-Schuckertwerke. 9448. Coal-cutting machine. Scharf. 9575. Machines applicable for use in taping articles such as cables. F. Krupp Akt.-Ges. Grusonwerk. GOVERNMENT PUBLICATIONS. Any of the following publications may be obtained on application to this office at the price named post free. Statutory Rules and Orders, 1913: Workmen’s Compensa- tion Rules, Ijd. ; Workmen’s Compensation Memorandum, l)d. ; National Insurance, Unemployed Insurance Regula- tions, January 8, 1913 (387), ltd. Bills, 1913.- Directors of Public Companies and Govern- ment Contracts, Id.; Children, Employment Abroad, l$d. ; Smoke Abatement, 2d. ; Trade Boards Act Provisional Orders, l|d. Census of England and Wales, 1911: Vol. 5, Buildings of Various Kinds, 3s. 5d. Industrial and Provident Societies : Amendment, 2d. National Insurance Handbook of Approved Societies, 5Jd. Boiler Explosion Report (No. 2,212) : Steam-heated Oven at Leeds, 4Jd. Board of Education : Table of Summer Courses, IJd. PUBLICATIONS RECEIVED. Oil and Petroleum Manual for 1913. By W. R. Skinner. Fourth edition. London : W. R. Skinner. Price 4s. net. Butterworth’s Workmen’s Compensation Cases : Vol. VI, Quarterly Advance Sheets (Part I., 1913). By Douglas Knocker. London: Butterworth and Co. Price 7s. 6d. Biggar’s Contracting World Directory, 1913. By C. W. Biggar. London: Contractors’ and Engineers’ Publica- tions Limited. Price 10s. 6d. Law and Practice in the Railway Commissioners’ Court. By E. E. G. Williams. London: Butterworth and Co. Limited. Price 12s. 6d. net. Reorganisation and Costings. By Harvey Preen. London: Simpkin Marshall. Price 2s. 6d. net. Hull as a Coal Port. By H. E. C. Newham. Hull: H. E. C. Newham. Price 2s. 6d. “ Trade Openings ’’ (Oportunidades de Negooios para Casas Sud y Central Americanus), 1913; “ British Chamber of Commerce of Turkey, Report for the Year 1912, presented at the 25th Annual General Meeting held on April 26, 1913 ”; “ Trade of the U nion of South Africa, Southern and Northern Rhodesia, and British South Africa, for the Month of February 1913,” price 3s. 6d.; “ Le Mois Scientifique et Industriel” (No. 164), April, price 2fr. “OXYNALER” OXYGEN REVIVING APPARATUS. The Safest and Most Reliable Means of reviving persons apparently asphyxiated is to administer Oxygen by a simple form of apparatus, as shown, and at the same time use the Schafer method of resuscitation which is known to all St. John Ambulance and Red Cross Students. Automatic Appliances for Exhausting the Lungs are an Unknown Quantity ASK THOSE BEST QUALIFIED TO GIVE AN OPINION. Why p.y X20 when you can do the same work with an apparatus costing only £4, 12s. 6d. ? Great Mining Machinery Exhibition, ROYAL AGRICULTURAL HALL, LONDON, Thursday, MAY 29, to Saturday, JUNE 7. Will be opened by The Rt. Hon. the EARL OF ELLESMERE. Previoui Exhibitions under same management were held a’ the Royal Agricultural Hall, 1903. 1904, 1906, and at Olympia in 1908. H. ORE VILLE MONTGOMERY, Offices : 43, Essex Street, London. HUGH C. MONTGOM SRY, Directors. 27, Brasenose St., Manchester. ALSO MAKERS OF THE “Proto” Rescue Apparatus (Fleuss-Davis Patents) FOR RESCUE AND RECOVERY WORK IN MINES. Adopted by nearly 100 Mines in this country alone. Self-Contained Diving Apparatus (No Air Pumps or PROFIT with SAFETY in Pit Shafts NEEDS HANLEY’S SAFETY BELT on each Shaft Worker, and NEEDS HANLEY’S CAGE GUARDIAN on EACH CAGE. A. HANLEY, 21, Alpha Rd., Bristol. Tubes) for Flooded Mines and other difficult situations where the use of air pumps and tubes would be impracticable. SIEBE, GORMAN & CO. LTD“ Neptune ” Works, LONDON, S.E. Telegrams—" Siebe, London.” Telephone No.—251 Hop. R. HEBER RADFORD, SON, & SQUIRE, Engineering, Iron and Steel Works ------------------ VALUERS, ---------------- Consulting Engineers, Referees, Arbitrators & Patent Agents. ----- ESTABLISHED OVER 40 YEARS. --- (Senior partner, R. Heber Radford, Mem. Inst. Mechanical Engineers, Mem. Inst. Naval Architects, Mem. Iron and Steel Institute, Fellow Chartered Institute of Patent Agents.) IS, St. Ja,nxe8 Ro'w, Sheffield. Telegrams—*4 Radford. Sheffield.” Telephone—425.