428 THE COLLIERY GUARDIAN. February 20, 1914. may ba attached to workman’s trousers, and lightly holds up strap D3, preventing strap D3 from sliding down the worker’s leg if he should stoop to pick up tools or for other purposes. The strap C3 is passed down through the ring or link R9, its lower end is riveted to have loophole (fig. 7) around B and R , as at figs. 1, 2, and 7. The lower end of C3 (fig. 2) forms part of the strap D‘, whose upper end loops around B, in which position it is riveted. The upper part of D‘ is bent and fixed around the front part of R9, as at figs. 6 and 7. (One claim.) 28973 (1912). Improvements in the Conversion of Coal Tar, Petroleum Residues, Creosote, Schist Oils and the like into Pitch. J. Rosen, of Apollo Lodge, Maplesbury-road, London, N.W. (Societe Anonyme des Combustibles Industriels, of 75, rue de Maubeuge, Paris, France.—Relates to improvements of the process described in the Specification of prior Letters Patent No. 8712 of 1912, granted to the Societe Anonyme des Combustibles Industriels, for converting coal tar into pitch, and consists in converting a part only of the constituents of the raw material into pitch, the other constituents being left in the form of oils. The process is carried out as explained in the before-mentioned specifica- tion, by using an apparatus comprising several columns, but the vapours or gases that escape from these columns at different temperatures are condensed and collected separately. Those constituents that are to be completely converted into pitch are passed back into the mass of raw material under treatment by returning the same to one of the following columns, whereas the other constituents are left in the condition in which they are collected. When it is desired to convert all the constituents of the material except, for instance, one or two into pitch, the coal tar or tar oils are heated and treated with air until these con- stituents have been completely separated off from the others that are to be converted into pitch, whereupon the vapours that continue to be given off are returned to the mass of tar and passed into a subsequent column for renewed treatment. The whole operation is preferably carried out in columns that measure 6 to 10 metres in height and 2 to 3 metres in diameter. (One claim.) HEW PATENTS COHHECTED WITH THE COAL AHD IRON TRADES. Applications for Patents. 3330. Grabs for loading and unloading coal, ballast, and the like. J. W. Archer and W. Smoothy. 3331. Air-coolers for air-compressors. H. E. MacCamy. 3339. Furnaces for the heat treatment of metals. W. A. Russell and J. Lord. 3341. Pumping plant. C. W. Bryant and Peter Brother- hood Limited. 3361. Coke ovens permitting of the use of horizontal recuperating ovens with vertical flues, as ovens for recuperating by-products. Soc. Franco-Beige de Fours a Coke. 3461. Method of ascertaining disturbances in the frost wall when sinking shafts, according to the shaft-freezing method. G. Leimbaoh. 3465. Steam or gas turbines. Soc. Anon, pour 1’Exploita- tion des Procedes Westinghouse-Leblanc. 3466. Steam turbines. Soc. Anon, pour 1’Exploitation des Procedes Westinghouse-Leblanc. 3498. Governing or regulating air-compressors and the like. T. A. Walker, E. R. Walker, and G. L. Walker. 3517. Bearings for the axles of colliery trucks, light wagons, and the like. A. Dootson. 3542. Boring-bits. S. W. Morgan. 3558. Means for supporting and operating mining drills. A. L. Onslow and T. Miller. 3563. Cradles for hammer drills or percussion drills. H. C. Jenkins. 3578. Automatic tipping-apparatus for mine or other like trucks. G. E. Mackenzie - Skues. (F. W. Mackenzie-Skues, Transvaal.) 3579. Percussive hammer drills. W. R. Tindall. 3580. Device for preventing pulsations of pressure in rotary fluid-compressors and the like. G. M. Clark. (Soc. d’Exploitation des Appareils Rateau, France.) 3595. Centrifugal pumps. British Thomson - Houston Company Limited. (General Electric Co., U.S.) 3597. Process of smelting iron waste. B. E. D. Kilburn. (Karl Schaefer, Germany.) 3620. Shear blades for use in tin-plate works, sheet-steel works, or the like. E. G. Charles. 3626. Centrifugal fans. P. W, Allday and T. H. Plummer. 3629. Appliance for spraying incombustible preparations or compositions into coaldust for rendering same non-explosive in coalmines. J. Arnott and J. Bland. 3637. Treatment of fuels for obtaining by-products there- from. W. Antrobus. 3703. Mine-door closers. T. Ramsay and J. T. Tongue. 3708. Rotary blowing-machines. British Thomson-Houston Company Limited. (General Electric Co., U.S.) 3718. Truck-pushing conveyors. E. Pocher. 3737. Machine tool for the manufacture of notched or serrated bars or rods. S. A. Daniell Limited and J. Bodington. 3779 Feed mechanism for drilling machines and the like. A. Herbert and P. V. Vernon. 3787. Miners’ safety lamps. O. Bailly. 3814. Apparatus for feeding finely-divided fuel to furnaces. J. Fisher. 3835. Electric furnaces. Soc. Electro-Metallurgique de St. Beron. 3855. Non-automatic couplings for railway vehicles. J. Darling. 3857. Detonators and the art of producing the same. Nobel’s Explosives Company Limited, D. Corrie, and C. M. W. Grieb. 3861. Signalling appliance of the electrical type for use in connection with colliery winding-engines. A. J. Routledge. 3874. Detonators and percussion caps and the art of pro- ducing the same. Nobel’s Explosives Company Limited, D. Corrie, and C. M. W. Grieb. 3886. Vertical coking retorts, carbonising chambers, or the like. B. Cochrane and R. Peel. 3888. Utilisation of peat. M. A. Adam and Wet- carbonising Limited. 3893. Regulation of turbines. Akt.-Ges. Brown, Boveri et Cie. 3920. Concrete mining props. F. Riiokrich. Complete Specifications Accepted. To be published on March 5. 1912. 28781. Safety apparatus for arresting pit cages, hoists and like carriages. Hanley. 1913. 788. Method of and means for effecting the efficient transmission of electric signalling impulses through cables. Williams. 2785. Manufacture of chains with welded links. Bindel. 3059. Piston valves for pumps. Duverger. 3175. Jumper or drill for drilling holes in rock. Whitby. 3271 and 3566. Manufacture of a material suitable for electrical insulation and other purposes. British Thomson-Houston Company (General Electric Company). 3354. Cast iron and process for producing same. Anderson. 3613. Bricks or quarries for use in the bottoms of ovens and kilns, but applicable also for other purposes. Phillips. 4006. Production of gaseous fuel. Southey. 4092. Elastic fluid turbines. Warwick Machinery Com- pany (1908) (General Electric Company). 4661. Centrifugal pump or fan. Johnston and Globe Pneumatic Engineering Company. 6057. Explosive priming compositions. Claessen. 7492. Centrifugal fans. Hancock. 9499. Manufacture of ammonia and other by-products in gas producers. Wade (“ Montania ” Brenn- stoffverwertung Ges.). 11314. Centrifugal pumps. Mond (Verein Chemiseher Fabriken-Mannheim). 11900. Retort furnaces. Londress and Worley. 14637. Rock drills. Meyer. 28048. Reheating furnaces. Siemens. 29517. Regenerative coke ovens. Schuster. 29958. Apparatus for locking the discharging doors of dumping receptacles. Fried. Krupp Akt.-Ges. Complete|SpecificationB open to Public Inspection before Acceptance. 1914. 2186. Rope railways. Thunhart. 2930. Device for extinguishing flame in firedamp or coal- dust explosions. Maximilian. Grimsby Coal Exports.—The exports of coal from Grimsby shown by the official return for the week ending Friday, 13th inst., totalled 18,890 tons to foreign destina- tions and 187 tons in the coastal trade, as compared with 14,281 tons foreign during the corresponding week last year. The shipments were as follow :—Foreign : To Barce- lona, 1,204 tons; Christiania, 3,122 and 209 tons coke; Esbjerg, 508; Dieppe, 712; Gothenborg, 1,201; Hamburg, 381; Helsingborg, 2,744; Korsoer, 921; Malmo, 2,636 ; Odense, 1,412; Rotterdam, 520; Skien, 1,627 ; and Ystad, 2,262. Coastal: To London, 187 tons. G0VERHHEHT PUBLICATIONS. Any of the following publications may be obtained on application to thia office at the price named post free. Report on Fencing and Safety Precautions for Transmis- sion Machinery, 8d. Consular Report : Persia, Trade of Bushire, 1912-13, 7d. Trade and Navigation Returns for January, Is. 2d. Boiler Explosion Report at Normanby Park Steelworks 2Jd. Statistical Abstract for the British Empire, 1898 to 1912, Is. 7d. Labour Gazette, February, 2Jd. PUBLICATIONS RECEIVED. “ Manchester Chamber of Commerce, ‘ Reply to Council of the Chartered Institute of Patent Agents regarding Section 27 (Compulsory Working of Patents) of the Patents and Designs Act, 1907 ’ ”; “ The Homeland ” (the Central Land and Housing Council) (No. 1), February, price Id.; “Transactions of the Mining Institute of Scotland ” (Vol. 36, Part 2) ; “ Bradford and the Metric System, an Address by Mr. Alex Siemens” (the Decimal Association), price 3d.; “ Transactions of the Manchester Geological and Mining Society ” (Vol. 33, Part 9); “ Transactions of the Institution of Engineers and Shipbuilders in Scotland” (Vol. 57, Part 4) ; “The Journal of the Franklin Institute” (Vol. 177, No. 2), February, price 50 cents ; “ International Review of Commerce and Industry” (Vol. 1, No. 3), February, price 2s.; “ Annales des Mines” (tome 4, No. 12); “ Report of the Board of Governors of the Public Library, Museum and Art Gallery of South Australia for 1912-13 ”; “ Bulletin (No. 70) of the United States Bureau of Mines, ‘ A Preliminary Report on Uranium, Radium and Vana- dium,”’ by R B. Moore and Karl L. Kithil; “Journal of the Chemical, Metallurgical and Mining Society of South Africa” (Vol. 14, No. 6), December, price 3s.; “The Mining Magazine ” (Vol. 10, No. 2), February, price Is.; “The Journal of the Western Society of Engineers” (Vol. 18, No. 10), December, price 50 cents; “ Bulletin of the Canadian Mining Institute ” (No. 23); “ The Engineering Magazine” (Vol. 46, No. 5), February, price Is. Scheme to Improve Freights.—At the annual general meeting in Newcastle of the Cairn Line of Steamships Limited, on the 13th inst., Mr. W. J. Noble (chairman) said he was satisfied that the present deplorable condition of the freight markets was altogether unwarranted, and out of all proportion to the trifling shrinkage of trade. The causes were mainly connected with matters of finance, and in his judgment were largely of a transient nature. Shipowners, unfortunately, did not appear to realise their power. The difficulties of combining for mutual protection in a trade of such world-wide dimensions and varied interests as the carrying trade were great, but not insuperable. Combina- tion had been successful in the past, and could be successful again. For the first time in the history of shipping they had now close working arrangements between British and Continental shipowners. In addition, they had an Inter- national Shipping Federation, comprising 18,500,000 gross register tons of shipping. In 1911, owing to a temporary shortage of sailors and firemen, the Shipping Federation, comprising 12,000,000 tons of shipping, organised a scheme for laying up a certain amount of tonnage to relieve the situation. As a result, 115 vessels were laid up—in most cases for a month, but in some cases for rather less. To compensate these owners who thus laid up, a levy was made amounting to practically £40,000, which represented something less than Id. per gross register ton upon the steamers contributing. The effect of this temporary laying-up not only achieved its primary object, but had an immediate stimulating effect upon the freight markets of the world. The amount of compensation paid was recovered many times over by the contributors by the immediate rise in freights. He had recently placed these figures before a body of shipowners representing no less than 11 nationalities, and they were so much impressed by them that they have appointed a deputation to interview the president and executive committee of the International Shipping Federa- tion, with the object of organising a similar scheme, but on a larger scale, so as to embrace not only Great Britain, as in 1911, but also those countries represented by the Baltic and White Sea Conference. One penny per ton on the shipping of the International Shipping Federation would produce £75,000, and this he calculated would be sufficient to compensate 1,000,000 tons for lying up for one month, or what would be more effective, half-a-millions tons for two months. GEORGE FLETCHER & CO. LTD„ MASSON & ATLAS WORKS, DERBY, are now the Sole Licensees THE Capell & Makers of ENQUIRIES PROMPTLY DEALT WITH. 900. AN