776 THE COLLIERY GUARDIAN. April 9, 1915. 5001. Electric motor controllers. Igranip Electric Company Limited. (Cutler-Hammer Manufacturing Com- pany, U.S.A.) 5012. Scourer for rolling mills. J. B. Baird. 5018. Fuel. E. R. Sutcliffe and Pure Coal Briquettes Limited. 5019. Method of briquetting. E. B. Sutcliffe and Pure Coal Briquetting Limited. 5026. Conveyor chains. G. S. Baker. 5029. Device for cutting wire, cables, or the like. P. H. Deacon and E. Owen. 5041. Instrument for recording percentage volumes of con- stituent gases. W. W. Croswell er. 5046. Covering for steam pipes, 'boilers, and the like. J. H. Green and B. C. Green. 5051. Heading machine for stone, coal, and the like. B. Jackson. 5052. Securing compressed air pipes and other fixtures in pit shafts. B. Jackson. 5057. Construction of boiler seatings. E. Shackleton. 5058. Plunger pumip. P. Kestner. 5059. Steam generators and the like. P. Kestner. 5104. Electric'motor controllers. Igranic Electric Company Limited. (Cutler-Hammer Manufacturing Com- pany, U.S.A.) 5109. Shaft and axle bearings. A. Carlborg and -G. Nyman. 5111. Discharge shoots for filling skips, buckets, and the like. Strachan and Henshaw Limited, and T. Sargent. 5112. Machines for cutting metal bars and the like.. T. Lumsden. 5120. Blowing devices. Midland Electric Bctary Blowing Company Limited, and J. Page. 5139. Metal melting furnaces and-the like. I. Hall. 5140. Bock cutting apparatus. F. Lobnitz. 5144. Furnace bridges. W. H. Gould. 5147. Apparatus for neutralising effect of expansion and contraction in ropes or like connections for trans- mitting intermittent motion. H. Armstrong and J. W. Thompson. 5148. Mechanical signalling apparatus for use in mines and other places. H. Armstrong and J. W. Thomp- son. Complete Specifications Accepted. (To be published on April 22.) 1914. 7452. Manufacture of hollow steel bars. Harden. 7635. Crucible and melting pot furnaces. Tooth. 7738. Combined pump and filtei’ for benzol-and like liquids. Smith. 8199. Water 'tube steam generators. Perkins and Kitchen. 8249. Bogies for railway and the like vehicles. Spencer. 8270. Alloys of nickel, copper, and aluminium with or ■without steel. Joyce. 8362. Construction of joints for flexible rails, conveyor chains, and the like. Casteran. 8466. Pumping plants. Davey. 9180. Panels for building walls of ovens, drying stoves, fuel economisers, water, air, or gas heaters, and the like. Wheeler, and Samuel Wheeler Limited. 11246. Purification of gas. Smith. 12721. Electrical signalling apparatus. Heyes and Heyes. 13138. Safety explosives. Metcalfe, Pearcy, and Curtis’s and Harvey Limited. 15647. Crushing machines. Symons. 18791. Apparatus for the 'settlement, or settlement and classi- fication, of finely-divided ore or other solid sub- stance suspended in a liquid. Wright. 19167. Mechanical stokers for furnaces. Johnson. (American Engineering Company.) 20232. Furnaces for supplying heated air and gas employed in drying processes. Staveley Coal and Iron Company, and Markham. 24781. Steam superheaters. Sugden and Fielding. Complete Specifications Open to Public Inspection Before Acceptance. 1914. 10478. Connecting device for the leads from portable secondary batteries. Bobert Bosch (firm of). 191’5. 3832. Axial flow steam or gas turbine. Akt.-Ges. der Masch.inenfabr.iken Escher, Wyss et de. 4080. Befractory material and the production thereof. Just. THE ACQUISITION OF ENEMY PATENT RIGHTS. The following list of British Patents, which have been granted in favour of residents of Germany, Austria, or Hungary, is furnished in view of the new Patents Acts, which empower the Board of Trade to confer upon British subjects the right to manufacture under enemy patents, which right, when acquired, can be retained after the war, and is specially compiled for the Colliery Guardian by Lewis Wm. Goold, Chartered Patent Agent, 5, Corporation- street, Birmingham. It is desirable in the first instance to obtain the latest particulars upon the Patents Begister. If any patent listed has been assigned to a non-enemy proprietor, the law does not apply. ■ 16024/12. Dynamo electric machines; dynamos, driving. L. Krebs, Berlin. 16073/12. Mine props. Telescopic mine props, in which the upper members are supported on filling material contained in the lower members, are provided with bottom plugs having wedge- shaped upper ends to split the filling material into streams, which escape through openings formed in the lower ends of the members, and adjusted by sliding sleeves. P. Schulte, Ger- many. 16436/12. Furnaces; roasting furnaces. Metallbank und Metallurgische Ges., Germany. 16440/12. Preventing explosions ’in mines. The spreading of coal dust, etc., explosions is prevented by the action of the pressure created by a blasting shot or explosion upon a disc, which releases a switch device held under tension, and sets a spraying apparatus into action to produce a water zone. G. Kahler, K. Junker, Germany (dated August 17, 1911). 16441/12. Preventing explosions in mines. Apparatus of the kind claimed in the parent specification is connected to the device for firing the blasting charge so that the apparatus is set into opera-, tion immediately before the explosion. G. Kahler, K. Junker^ Germany (dated November 16, 1911). 16864/12. Washing coal, etc. A jigger for separating coarse and fine granular materials, such as coal and ores, etc., by means of an oscillating pendulum-like blade, which is of a radius to correspond, to the lower semi-circular portion of the washing trough. K. Hintz and A. Krahe, Germany (dated September 23, 1911). 17042/12. Preserving wood, etc. Wood is preserved and fireproofed by impregnation with a solution of an anaphthalene mono-sulphonate, such as the zinc or magnesium salt, and salts of ammonium and magnesium, such as sulphates, chlorides, or phosphates, or double saltg, such "as sodium magnesium sulphate. Grubenholz-Impragnier- ung Ges., Berlin. 17349/12. Cranes. Comprises a combination of slueing jib and overhead travelling cranes, especially applicable for loading and unloading ships’ cargoes at wharves and like places. Deutsche Ma schinenfabrik Akt. - Ges., Germa ny. 17557/12. Mine props. Two parts of wbod are formed with inclined abutting ends, and secured together by clamping bands, Which are tightened by bolts and nuts or by wedges. H. Heidlamp, Ger- many. 17748/12. Coke ovens. Coke oven doors are provided with slots cut inwards from the outer edge of the frame in order to prevent warping. Wrought iron protectors are arranged so as to cover the ends of the slots’, and are set back from the front edge of the door to prevent burning. H. Keppers, Germany (dated August 15, 1911). *** Copies of any of the above specifications can be supplied at the price of Is. post free. GOVERNMENT PUBLICATIONS. *** Any of the following publications may be obtained on application to this office at the price named post free. Statistical Abstract for the British Empire, 1899 to 1913, Is. 7d. Bail way and Canal Commission Beport for 1914, 4£d. Boyal Commission on Sewage Disposal : Final Beport, 4d.; ditto, Vol. 2, Evidence, Is. 8d.; ditto, 9th Beport, 2s. Id. Pauperism Statement for February, ljd. Boiler Explosion Report : No. 2350, Steam Beceiver at Bias‘Power, 2Jd. Statutory Bules and Orders : (No. 205), Contraband of War, March 11, 1915, l£d.; (No. 232), Legal Proceedings Against Enemies Bules, ljd. British Meteorological and Magnetic Year Book, 1913, Part 1, Weekly Weather Beport, Appendix 4, 2s. 7d. Immingham Coal Exports.—Betu-m-s for the week ending April 1 show that the coal exported from Immingham con- sisted of the following :—Foreign : To Amsterdam, 4,699 tons; Boulogne, 1,097; Copenhagen, 1,550; Helsingborg, 2,051; Narvik, 4,335 ; Nakskov, 525; Oxelosund, 2,195; and Botiterdam, 1,651 tons—total, 18,103 tons foreign; compared with 44,006 tons foreign and 3,440 tons coastwise during the corresponding period of last year. Grimsby Coal Exports. — Beturns for the .week' ending April 1 show that the coal exported from Grimsby, was as follows :—Foreign : To Dieppe, 784 tons; Helsingborg, 2 006; Oxelosund, 1,957; Bonneby, 1,186; and Stockholm, 2,307 tons. Coastwise : To Colchester, 280; Bye, 172; and Hayle, 780; tons making a total of 8,240 tons foreign, and 1,283 tons coastwise, compared with 22,982 tons foreign and 1.083 tons coastwise during the corresponding period of last year. BOOK NOTICES. The “ Practical Engineer" Pocket Book and Diary and Electrical Pocket Book and Diary are such old friends that they need no further commendation at our hands. Both contain over 600 pp., and the cost of each is Is. 3d. (cloth) or Is. 9d. (peltine) post free. The publishers are the Technical Publishing Company Limited, 55 and 56, Chancery-lane, W.-C. Mathiesons ’ Highest and Lowest Prices gives the extreme range of business for 1914 of every security officially quoted on the Stock Exchange; the highest and lowest business monthly for 12 months and yearly, for the past six years of the principal stocks; dividends paid for the past six years, etc. The price is 2s. 6d., and the publishers Messrs. C. Mathieson and Sons, 16, Copthall-avenue, E.C. A reminder of the growing importance of the mineral industries of Western Canada is the appearance of a new fortnightly, entitled the Mine, Quarry, and Derrickr with headquarters at Calgary, Alberta. The editor is Mr. J. C. Murray, with whom are associated Mr. W. C. McGinnis and Mr. B. W. Coulthard. A hearty welcome will be given to Mr. Murray on his return to journalism by those who remember his able conduct of the Canadian Mining Journal. The issues that have reached us give great promise of a useful future, which should certainly lie before Mr. Murray’s new venture. Mr. Eugene B. Wilson has retired from the editorship of the Colliery Engineer, but will continue to act in a consulting and advisory capacity. The post will be filled by Mr. C. M. Young. Mr. T. A. Rickard, editor of the Mining: Magazine, and Mr. H. Foster Bain, of the Mining Press of San Francisco, are exchanging places for a few months. In view of the increasing importance of trade with Russia, the issue of information regarding the somewhat complicated Russian 'weights and measures, and especi- ally of equivalent tables permitting of instant conversion of "British weights, measures, and money into Russian and vice versa is of considerable interest to the trading community. The Central Translations Institute Limited (Danes Inn House, 265, Strand, London, W.C.) have compiled from official figures a set of tables covering all ordinary commercial requirements, at the popular price of Is. net. PUBLICATIONS RECEIVED. The Journal of the South African Institution of Engi- neers ” (Vol. 13, No. 8), March, price 2s.; “ The Flying Machine from an Engineering Standpoint,” by F. W. Lanchester (Excerpt'Minutes of Proceedings of the Insti- tution of Civil Engineers); ‘‘Transactions of the Man- chester Geological and Mining Society ” (Vol. 34, Part 2)r “ How to Pay for the War : The Need for a Board of Industry,” by Wilfrid Stokes (published by the British Engineers’ Association); . “The Iowa Engineer,”' February, “ Anglo-Norwegian Trade Journal ” (Vol. 1,. No. 3), March; “ The 49th Annual Report of the Cardiff Incorporated Chamber of Commerce, 1914,” price Is. ; “ Cardiff Chamber of Commerce Report on Proposed Alterations of the Law Respecting Limitations of Ship- owners’ Liability and Maritime Mortgages and Liens, and on a Proposed Freight Code ” ; “ Gassier’s Engineer- ing Monthly ” (Vol. 47, No. 4), April, price Is. Institution of Civil Engineers.—At an ordinary meeting on Tuesday, April 13, at 8 p.m., the 'following paper is to be read and discussed : “ On Impact Coefficients for Railway Girders,” by Mr. Charles William Anderson, M.Inslt.C.E., Mining Institute of Scotland.—The 38th annual meeting of the Mining Institute of Scotland will be held in the- •rooms of the institute, 39, Elmlbank-crescent, Glasgow, on Saturday, April 10, at 3 p.m. Mr. David M. Mowat will deliver his presidential address. Mr. G. S. Cooper’s paper on “ Modern Development in By-Product Coking,” Mr. Robert W. Damn’s paper on “ The Training of Mining- Engineers,” and Mr. John Gibson’s paper on “ Some Notes, on the Education of the Colliery Manager,” will be discussed. Hull Coal Exports.—The official return of the exports of coal from Hull abroad for the week ending Tuesday, March 30, 1915, is as follows:—Alexandria, 3,388 tons ; Brindisi, 3,526; Buenos Ayres, 4,400; Calais, 649; Copen- hagen, 1,660; Dunkirk, 776; Halmsltad, 553; Hauges and,. 128; Honfleur, 541; Malmo, 1,450; Oxelosund, 1,517; Reykjavik, 760; Ronneby, 2,213; Rouen, 31,802; Rotter- dam, 308—total, 53,671 tons. The above figures do not. include bunker coal, shipments for the British Admiraltyr nor the Allies’ Governments. Corresponding period March. 1914—‘total, 61,274 tons. 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. SIEBE, GORMAN & CO. LTD., “Neptune” Works, LONDON, S.E. Telegrams—” Siebe, Lamb, London.” Telephone No. 251 Hop. Agent for North America and Mexico—H. N. [ELMER, 1140, Monadnoch Block, Chicago. Driving Chains & Wheels Conveyors, Elevators, Screening Plant, Tipplers, &c., &c. on war office and admiralty lists. HANS REN OLD LTD., Pillsbury, MANCHESTER. ALFRED ALLEN & SON Makers of and COLLIERY TUBS In IRON, STEEL and WOOD. Lower Gornal, nr. Dudley. Telegrams—” Allen, Lower Gornal.” Telephone—106 Dudley.