1032 THE COLLIERY GUARDIAN. May 16, 1913. expiratory side of the breathing |bag j which contains the absorbent of COa. The said inner chamber is also provided with a screw-threaded nozzle connected to the expiratory valve which is attached to the mouthpiece of the apparatus by means of a tube. The two chambers are jointed together by means of a screwed nipple at the bottomland the space between them may be filled with lint or other absorbent 7^7 c material saturated with water or water and methylated spirit, or other volatile liquid, for the purpose of further cooling the air passing through the inner chamber. Fig. 1 is a sectional elevation of our combined saliva trap and cooler, and fig. 2 is a plan view thereof. (Two claims.) 22625 (1912). Improvemsnfs in Priming Devices for Centri" .fugal Pumps. The firm M iffei- Sahwartzkopff Werke Gesellschaft mit beschrankter Hafcung, of No. 23, Chaussee- strasse, Berlin, Germany.—This invention relates to priming devices for centrifugal pumps of the type in which the priming device is brought into operation when the centri- fugal pump is set in motion, and is automatically put out of operation as soon as the centrifugal pump is filled with water and creates pressure in its own casing. The invention consists in controlling the operation of the priming device in a pump of the type referred to by means of an axial motion of the pump rotor. In carrying the invention into * effect, a small piston pump, an exhauster of the rotary type, a centrifugal air pump, ejector or the like is employed for the priming—i.e., the removal of air from the pump. Such an auxiliary device may be actuated from the centrifugal water pump shaft or by a separate source of power, but in any case is so arranged that the axial motion of the rotor of the water pump when the said pump creates pressure in its casing interrupts the operation of the priming device. In the accompanying drawing one method of carrying the invention into effect is shown. (Three claims.) NEW PATENTS CONNECTED WITH THE COAL AND IRON TRADES. Applications for Patents. 10504. Rotary engines, pumps, compressors, and the like. F. Gaos. 10511. Check-feed valve for marine and other boilers. J. Green. 10514. Reversing and controlling gear for electric motors, specially applicable to electric motors for operating lifts. Etchells, Congdon, and Muir Limited, and F. Muir. 10516. Apparatus for generating steam. J. Johnson and Co. (Bolton) Limited and W. Lile. 10526. Means for securing rail spikes and the like in wooden sleepers, and the like. T. Kurz. 10539. Means for automatically regulating the admission of air to electrical machines. G. A. Mower, K. O. Hale, and J. Christie. 10566. Drills, bits, and like appliances for boring in earth, rock, and the like. W. H. Wakfer and S. Peck. 10594. Buffers for railway trucks, or the like. J. McEntyre. 10609. Device for the automatic maintenance of phase- equality of the currents of parallel connected alternating-current machines. Allgemeine Elek- tricitats Ges. 10619. Haulage endless clip. J. P. Sampson. 10636. Construction of kilns and the like. T. W. Twyford. 10641. Metal rolling mills. C. G. Atha and O. C. Morgan. 10651. Means for delivering fluids from pumps and the like. W. H. Knowles and W. F. Goreham. 10669. Pressing and forging machines. J. B. Scriven and J. Scriven. : 10674. Means for securing together angularly arranged wires, ropes, rods, or the like at their place of juncture. F. A. Bullivant and G. M. Selby. 10678. Fluid compressors or pumps. G. M. Richards. 10684. Coke ovens. Dr. C. Otto and Co., G.m.b.H. 10686. Rail-bending apparatus. L. Vojacek. 10691. Method of agglomerating ores or other mixtures. A. G. Andersson. 10708. Furnaces particularly applicable to the reduction of tin ores. R. W. E. Madvor and Metals Extraction Corporation Limited. 10723. Appliances for consuming smoke and economising fuel in steam boiler furnaces. J R. Brunton. 10731. Explosive alarm devices. B. E. Turner, C. Lockwood and G. T. Holroyd. 10743. Chucks or sockets for rock boring drills and the like. H. Smith and H. Wood. 10784. Scale scrapers for boiler tubes. J. B. Nirascon. 10794. Brake mechanism suitable for railway vehicles. G. B. Bowles. 10808. Solidification of oils. H. R. Riches. 10809. Manufacture of fuel. H. R. Riches. 10813. Process and apparatus for the production of gas from coal, brown coal, peat and wood. G. Roubzoff. 10821. Ingot moulds. W. D. Bradford. 10847. Utilisation of exhaust steam from locomotive engines for heating purposes. G. Lindsay. 10853. Regenerative open-hearth furnaces. T. B. Rogerson. 10878. Cooling iron or steel bars preparatory to rolling into sheets. G. Morgan and J. Davies. 10879. Process for increasing the yield of chromium in the alumino-thermic production of carbon free ferro- chromium from chrome iron ore. Th. Goldschmidt Akt.-Ges. 10881. Automatic cut-off valves. P. Karamus. 10901. Arrangement for the regulation of machines for multiple wire drawing and the like. Soo. Anon, des Forges et Acieries de Huta Bankowa. 10913. Jig conveyors. A. Eiokhoff. 10936. Automatic process for recovering tin or other ores from rivers, waste sands and the like. W. J. Hocking. 10938. Process for the manufacture of spirit for use in internal-combustion or explosive engines and by-products. H. Walker. 10945. Adjustable wire-drawing plate. G. Lammel. 10948. Apparatus and appliances for controlling winding engines. E B. Stead. 10950. Regenerative furnaces or the like. H. Walsh and A. Priestley, trading as Standard Furnace and Setting Company. 10953. Detachable hose or socket for wire ropes. E. King. 10968. Distribution for pneumatic piston and percussion tools. J. Descours and P. Labitte. 10974. Oil furnaces for steam boilers. Fried. Krupp Akt.- Ges. Germaniawerft. 10978. Construction of coking oven and coking coal. J. Moeller and H. C. Woltereck. 10981. Working of by-product recovery gas producers. T. Rigby, G. W. Andrew and Wetcarbonizing Limited. 10984. Adjustable guide wheels for centrifugal pumps, turbine pumps and compressors or the like. O. Neufeldt and W. Zurovec. 10997. Furnace fire bridges. A. W. Prim. 10998. Steam turbine installation. A. F. Yarrow. 11007. Flywheel storage arrangements such as used in the electrical driving of haulingor winding machinery. Siemens-Schuckertwerke G. m. b. H. 11017. Treatment, of metals or alloys to render them ductile and malleable. Westinghouse Metallfaden Gluh- lampenfabrik G. m. b. H. 11052. Link or coupling. D. Ross. 11071. Process for the combustion of powdered fuel. S. M. Udale. 11073. Method and means for preventing the formation of carbon monoxide in shaft furnacee. E. Schur- mann. 11077. Manufacture of metal tubes. M. Ruthenburg. 11085. Process and apparatus for sinking boreholes. C. R. D. von Stein. 11094. Forging, hardening, tempering, annealing, and similar furnaces. Fletcher, Russell and Co. Limited and T. W. Fletcher. 11095. Solvent process for the recovery of metals. H. E. Moore, R. Boyle, and Refractory Ores Limited. 11119. Tube mills. W. Fennell. 11132. Treatment of peat. T. Rigby, G. W. Andrew, and Wetcarbonizing Limited. 11133. Utilisation of peat. T. Rigby and Wetcarbonizing Limited. Complete Specifications Accepted. To be published on May 29. 1912. 3221. Manufacture of bar and tube shaped articles from molten metal. Pehrson. 10747. Weighing machines. Clark. 11023. Grease separator for use in tinplate mills. Young. 11174. Deep boring rock drills. Harker and Allcock. 11318. Grates and firebars for steam boiler and other furnaces, and arrangements for operating the same. Carnegie and Milliken. 11576. Couplings for all kinds of vehicles. Donat. 11681. Devices for setting the selective controlling appa- ratus on a moving automatic goods conveyor or trucker from a fixed station. Rottenburg and New Transport Company. 12544. Process of burning fuel in furnaces. Grieve. 12720. Illuminating, coke oven and other gases. Davidson. 13246. Rock drills. Rud. Meyer Akt.-Ges fur Maschinen und Bergbau. 14294. Tools for scaling condenser tubes and other tubes. Gilman and Clements. 14464. Calcining or roasting furnaces. Prager. 14816. Buffers of railway wagons and the like. Davie. 15342. Leading-in conductors for sealing into electrical apparatus. British Thomson-Houston Company. (General Electric Company.) 16566. Manufacture of dog spikes and the like. Sinclair, Howat and Russell. 17268. Rotary tool-holders. Pieper. 17724. Kilns or furnaces employed for calcining or roasting ore, limestone or other materials. Leigh. 17836. Electrolytes for use in electro-metallurgy. Dekker. 17888. Controlling gear for winding and hauling engines. Melling. 18801. Preparation or composition for rendering coal and other dust non-explosive. Arnott and Goodall. 19343. Clinometers. Pfister. 19660. Mechanical stokers. Wood. 19833. Overwinding and speed-controlling gear for winding and haulage engines. Bennett. 20246. Variable mould for casting metals. Coleman. 20310. Automatic controller for winding engines. Harbottle. 20752. Controlling mechanisms for preventing overwinding or running at excessive speeds in winding gears. Black. 21541. Travelling or chain grates for furnaces. Pregardien and Konrad. 21587. Machine for welding tubes. Spranger. 21755. Railway sleepers. Winsail and O’Neill. 21944. Agitators for use in the treatment of ores by solvents and the like. Dorr. 22315. Apparatus for welding the seams of tubes. Vogel. 24120. Chucks for rock drills. Vaught. 26166. Tilting arrangement for metallurgical furnaces. Jossingfjord Manufacturing Company A/S. 1913. 277. Furnaces. James. 866. Electric furnaces for fixing nitrogen from the air. Harker and Scott. Complete Specifications open to Public Inspection before Acceptance. 1912. 19347. Stoking apparatus. Soc. J. and A. Niclausse. 1913. 2220. Drill. Pokorny and Wittekind Maschinenbau Akt.- Ges. 6598. Means for controlling the supply of steam to an engine. Harle et Cie. 9082. Controlling tapped steam turbines. Bergmann Elektricifats-Werke Akt -Ges. 9590. Enclosed electric furnace with upper charging chutes. Helfenstein Elektro-Ofen-Ges. m. b. H. 10367. Swivel jar wire-rope sockets. Prosser. G0VERHHEHT PUBLICATIONS. Any of the following publications may be obtained on application to this office at the price named post free. Board of Trade Commercial and Intelligence Committee Report: March 1910 to March 1913, 9|d. Imports and Exports at Prices of 1900, 4|d. Census of Ireland, 1911: Summary Tables, 8d. National Insurance : Special Employers’ Customs Order No. 1, Id. Trade and Navigation Returns for April, Is. lOd. East India Trade, 1907-8 to 1911-12, Is. 5d. REPORT ON WASHING AND DRYING ACCOMMO- DATION AT MINES, Is. lOd. Bills, 1913: Pawning Industrial Tools, l|d.; Merchant Shipping Certificates, 2d. ; Children, Employment Abroad, Id.; Finance, Id. Statutory Rules and Orders: Burton and Ashby Light Railway (2), l|d. each. COAL MINES ORDER (431), Electric Lamps, Nos. 3 and 4, 2 jd. Special Bule re Registration of Juvenile Applicants in England and Wales Labour Exchanges, l£d. PUBLICATIONS RECEIVED. Nitrate Facts and Figures, 1913. By A. F. Brodie James. Tenth edition. London: By F. C. Mathieson and Sons. Price 2s. 6d. net. Sand Available for Filling Mine Workings in the Northern Anthracite Basin (U.S. Bureau of Mines, Bulletin 45) By N. H. Darton. Washington. Government Printing Office. Accidents from Mine Cars and Locomotives. (United States Bureau of Mines: Miners’ Circular 11). By L. M. Jones. Washington : Government Printing Office. The Cementing Process of Excluding Water from Oil Wells, as Practised in California. (United States Bureau of Mines: Technical Paper 32). By R. Arnold and V. R. Garfias. Washington: Government Printing Office. Second Annual Report of the Director of thi Bureau of Mines. Washington: Government Printing Office. “The Journal of the South African Institution of Engi- neers” (Vol. 11, No. 9), April, price 3s.; “The Journal of the Chemical, Metallurgical and Mining Society of South Africa” (Vol. 13, No. 9), March, price 3s.; “ Annales des Mines” (Tome 3, No. 4); “Zeitschrift fur das Berg-Hutten- u. Salinen Wesen” (Band 61), 1 Heft; “The Journal of the Western Society of Engineers ” (Vol. 18, No. 2), February, price 50 cents; “ Bulletin et Comptes Rendus Mensuels de la Societe de 1’Industrie Minerale ” (Tome 3, No. 4), April; “ Bulletin Mensuel de la Societe IndustrieLe du Nord de la France ” (No. 190), March; “ Bulletin of the American Institute of Mining Engineers ” (No. 76), April. Shipments of Bunker Coals,—During April the quantity of coal, &c., shipped for the use of steamers engaged in the foreign trade reached 1,795,946 tons, as compared with 842,068 tons in April 1912, and 1,467,501 tons in April 1911. The total so shipped during the first four completed months of this year amounted to 6,747,177 tons, as against 4,893,370 tons and 6,169,010 tons in the corresponding periods of 1912 and 1911 respectively.