1148 THE COLLIERY GUARDIAN. May 22 1914 11916. Means for indicating movement of the walls, roof, or floors of mines, tunnels, and the like. G-. D. Hodges and D. Smith. 11919. Suspension devices particularly for rolling stock. Soc. Anon. Brevetti Caldaie a Vapore. 11935. Shackles for coupling colliery trams and for other purposes. J. Williams. 11940. Electric signalling installations. Siemens Brothers and Company Limited. (Siemens and Halske Akt.-Ges., Germany.) 11955. Centrifugal pumps. P. Jerusalem. 12032. Testing insulation. Evershed and Vignoles Limited, and S. Evershed. 12035. Control or regulation of motors. Vulcan-Werke Hamburg und Stettin Akt.-Ges. 12037. Extraction of oil and other products from shales, bituminous rocks, and the like. C. White. 12038. Propellers, rotary fans, pumps, and the like. W. E. Proctor. 12048. Control or regulation of motors. Vulcan-Werke Hamburg und Stettin Akt.-Ges. 12049. Process for the extraction of sulphur from the dis- tillation gases of coal. E. Ciselet and C. Deguide. 12052. Means for conveying and otherwise dealing with materials in bulk. P. R. Allen. 12065. Ingot moulds. W. J. Mellersh-Jackson (Manganese Steel Rail Company, United States.) 12066. Manufacture of gas. F. P. Peterson. 12082. Explosives. Sir H. F. Donaldson and C. J. Newton. 12095. Machines and the cutter bars therefor for use in mining coal and the like. Mavor and Coulson Limited and G. M. Buchanan. 12099. Reversible dumpers for chain grate stokers on Bab- cock and Wilcox boilers. G. Newby. 12116. Compressors. C. H. Leinert. 12121. Pumping engines. H. Davey. 12142. Continuous distilling apparatus. A. L. Obrador. 12145. Purification and preparation of metal. F. R. Pope. 12153. Method of an appartus for coking coal briquettes. B. Gratz. Complete Specifications Accepted. To be published June 4, 1914. 1913. 6358. Respiratory apparatus. Drager. 11337. Automatic coupling gear for railway cars. Garankin. 11370. Steel manufacture. British Thomson-Houston Com- pany (General Electric Company). 11386. Muffle and similar furnaces. August’s Muffle Fur- naces Limited and August. 11730. Wire rope-ways. Conrad. 11775. Ore concentrating tables. Holman and Holman. 12764. Means for automatically controlling and regulating winding-engines or the like. Butterley Company and Drabble. 14221. Machines for pulverising clay and similar substances and separating stones and the like therefrom. Cammiss and Hutchinson. 16565. Manufacture of electrolytic iron. Soc. Anon. “ Le Fer. ” 16838. Briquettes of coke dust alone or mixed with wood waste. Alexander. 18214. Safety suspending-devices for mine cages. Pearson. 20079. Chain grate furnaces. Bennis. 20872. Socket or capping for attaching to the end of ropes. Haggie and Haggie. 21290. Process for the immediate fractional recovery of the by-products obtained in the production of illumin- ating town gas and coke. Fischer. 22141. Reversing gearing for cranes. Babcock and Willcox Limited and Hollick. 28526. Sand-moulding machines. Oetling. Complete Specifications open to Public Inspection before Acceptance. 1913. 18937. Ore concentration. Chapman 1914. 2044. Fluid-pressure turbines. Westinghouse. 2790. Wire rope couplings. Sunderland. 4242. Method of treating the gas liquor in small gasworks. Berlin Anhaltische Maschinenbau Ges. 4244. Grips for cables, ropes, chains and the like. De Carteret. 4574. Manufacture of light hydrocarbons from heavy hydro- carbons. Bergius. 7462. Method of and apparatus for indicating or signalling the rise of water level. Vertriebs Ges. Magnet Elektrischer Apparate. 9344. Method of tracing or determining admixtures or variations in the composition of gases. Haber and another. 11071. Process for extracting tin from tin plate waste. Chemische Fabrik von der Linde Ges. 11094. Desiccation of air or gases. Soc. L’Air Liquide (Soc. Anon, pour 1’Etude et 1’Exploitation des Procedes Georges Claude). 11219. Apparatus for making preliminarily bent chain links. Wilke. 11286. Method of increasing the rate of transmission of heat in furnaces. Pfoser and others. 11420. Process and apparatus for converting heavy hydro- carbons into light hydrocarbons. Porges and others. CATALOGUES AND PRICE LISTS RECEIVED. The May date-card issued by Messrs. Mavor and Coulson Limited (47, King-street, Mile-end, Glasgow) gives parti- culars relating to the employment of a Pick-quick electric coal cutter in steep seam. Messrs. Yeritys Limited (28, King-street, Covent Garden, W.C.), issue lists relating to the “ Aston ” automatic light- ing sets, desk and ceiling fans, and interpole dynamos. The latter are supplied in two types, one having two bearings and standard pulley, the other with one bearing and J-coup- ling for direct coupling to engine. Three-bearing machines are also supplied. Messrs. Davy Brothers Limited (Park Iron Works, Shef- field) send us a catalogue dealing with steam hammers for smith’s work, forging, etc. These are made in several types. One, type A, has an overhung frame with slides to support the tup. This type is made in standard sizes from 2 to 30 cwts. In the Rigby pattern (type B) the slides are absent, thus giving more headroom; as a compensation, the cylinder is lengthened, and the rod guided in a long stuffing guide box, whilst a much stiffer rod is employed. Type C hammers are furnished with a double arch frame, in sizes up to 40 cwts., and are built for heavy duties. Type D is specially built for heavy general forge work, and can be worked from front or back; the sizes range from 2J to 12 tons. Type E hammers are designed for steel tilting and plating. Most of these hammers, in the smaller sizes, are equipped with Holmes and Davy’s patent combined self- acting and hand-worked valve gear, by means of which the driver has the hammer under perfect and complete control by the operation of one hand lever. The same lever is used to vary the length of stroke, speed, and force of blow when self-acting, as well as striking hand-worked blows at any moment, without making any alteration or change to the valve gear. Cast steel adjustable V-guides can be fitted to all types of double standard hammers. GOVERNMENT PUBLICATIONS. Any of the following publications may be obtained on application to this office at the price named post free. Bills : Trade Marks, IJd.; Local Government Provisional Order Housing, IJd.; Continuation Schools, IJd.; Profit Sharing with Employees of Local Authorities, Id. Education : Code of Regulations for Continuation Classes, 1914, 3Jd.; Report of Committee of Council, 1913-14, 5d.; Report of Medical Inspection, 1911-12, 7Jd. Agricultural and Trade Development : United Kingdom, Germany, and United States Returns, IJd. Handbook on London Trades’ Commercial Occupations, 2Jd. Statutory Rule and Order : No. 595, Merchandise Marks Regulations, IJd. Boiler Explosion Report : At Beanult Colliery, South Wales, No. 2288, 5Jd. Explosion at Nobel’s Explosives Company Limited at Ardeer, 2d. Census of India, 1911, 5s. 2d. Labour Gazette, May, 2Jd. Factory Form, No. 54, IJd. Commercial Intelligence Return, Id. PUBLICATIONS RECEIVED. South Wales Coal and Iron Companies, 1914. London : The Business Statistics Company Limited. Price Is. Hand Sketching for Mining Students. By G. A. Lodge and N. Harwood. London : Crosby Lockwood and Son. Practical Well Sinking. By B. A. Harrison. London : The Technical Publishing Company Limited. Price Is. 6d. Les Poudres et Explosifs et les Mesubes de Secubitb dans lbs Mines de Houillb (Encyclopedic de Science Chemique Appliquee). By L. Vennin and G. Chesneau. Paris : Librairie Polytechnique, Ch. Beranger, Editeur. Conservation of Coal in Canada (Commission of Conserva- tion, Canada). By W. J. Dick. Toronto : The Bryant Press Limited. “ Le Mois Scientifique et Industriel ” (No. 176), April, price 2 fr. ; “ The Journal of the Chemical, Metallurgical and Mining Society of South Africa ” (Vol. 19, No. 9), March, price 3s.; “The Norwegian Chamber of Com- merce Year Book, 1913’’; “International Review of Commerce and Industry ” (Vol. 1, No. 6), May, price 2s.; “ Zeitschrift fur das Berg-, Hiitten- u. Salinen Wesen ” (Band 62, 2 Heft); “Monthly Circular of the British Chamber of Commerce, Paris"; “Transactions of the Institution of Mining Engineers ” (Vol. 47, Part 2), price 6s.; “ Peru To-day ” (Vol. 5, No. 9), December, 1911, price 5d.; “ The Mining Magazine ” (Vol. 10, No. 5), May, price Is.; “ Annales des Mines de Belgique ” (Toma 19, No. 2). YEADONS* Latest PATENTED BRIQUETTE MACHINERY, For Coal, Coke, Lignite, Iron and other Ores. YEADON, SON & CO., Engineers, LEEDS, Have a World-wide Reputation, They have supplied MORE BRIQUETTE PLANTS and 38 Years’ Experience. than any other firm in this country. the HOPPERS’ PATENT BYE-PRODUCT COKE OVENS ▲ND NEW SYSTEM OF RECOVERING THE BYE-PRODUCTS GIVE RESULTS WHICH HAVE SEVER BEES EQUALLED BY ANY OTHER SYSTEM. See large advertisement appearing in alternate issues of this Journal. All communications to be addressed to— The Rappers' Coke Oven A Bye-Product Co., 301, Glossop Road, Sheffield. Tel. No. 1935. Tel. Address—“ Kochs, Sheffield.” r ■ ’ > V- , i Oxygen Resuscitating 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. BEWARE of Automatic Suction Appliances. — Vide Eminent Physiologists’ REPORTS. ALSO MAKERS OF “Proto” (Fleuss-Davis Patent) Rescue Apparatus. SMOKE HELMETS. RESPIRATORS. GAS ANALYSIS APPARATUS. Merryweathers* Patent “HATFIELD PUMP For Fire Protection, Boiler Feeding, Draining, &c. COMPACT. LIGHT. ECONOMICAL. MERRYWEATHMg LONDON SIEBE, GORMAN & GO. LTD., “Neptune" Works, L0ND9N, S.E. Telegrams—“ Siebe, Lamb, London.” Telephone No.-251 Hop. Agent for North America and Mexico-H. N. ELMER, 1140, Monadnoch Block, Chicago. Can be driven by any motive power. An Engineer writes“ I am pleased to inform you that the ‘ Hatfield > Pump is working splendidly. I have never had the least trouble with it in any way since it was fixed.” WRITE FOR PAMPHLET 193P. MERRYWEATHER & SONS, M.owAc0RE'