120 THE COLLIERY GUARDIAN January 16, 1914. THE KOPPERS’ PATENT BYE-PRODUCT COKE OVENS AND NEW SYSTEM OF RECOVERING THE BYE-PRODUCTS GIVE RESULTS WHICH HAVE HEVER BEER EQUALLED BY ANY OTHER SYSTEM. See large advertisement appearing in alternate issues of this Journal. All communications to be addressed to— The Hoppers' Coke Oven A Bye-Product Co., 301, Glossop Road, Sheffield. Tel. No. 1935. Tel. Address—** Kochs, Sheffield.” Don't Wait for Trouble. Apply Cling-Surface Now. The absence of slip after Cling-Surface treatment invariably enables a belt to pull a greater load with smaller bearing friction loss, and by rendering initial tension unnecessary, relieves pulleys, bearings, shafting and even the engine to an extent that means much in reduced repairs, labour, lubrication and fuel consumption. Giving your belts the serious attention they deserve involves at least a trial of Cling-Surface. Ask for our liberal trial offer. Photos of Belts and Ropes running SLACK in the most important works in England sent on application to— THOMAS & BISHOP, Sole European Agents, Head Office—119-125, Finsbury Pavement, London, E.C. Merryweathers’ Patent “HATFIELD PUMP MERRY WEATHFJS LONDON For Fire Protection, Boiler Feeding, Draining, &c. COMPACT. LIGHT. ECONOMICAL. 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, ^DLoTwAoCRE' HAULING ENGINES (Own Manufacture). Three, Six, & Six REPEAT ORDERS from different Collieries for this type of Engine. This Photo is taken from 8 in. x 12 in. stroke double cyls. “G” type, single drum, 2 ft. 6 in. dia. x 15 in. wide, flanges 9 in. deep. Double drum, each drum being 2 ft. 6 in. x 12 in. wide between flanges, flanges 9 in. deep with Helical Steel Gearing. Steel side frames. Friction-Driven Winding Gear (Own Manufacture). The motive power is taken through a friction ■coupling, and can be coupled either to Steam, Diesel, Oil, or Gas En- gine. The drums are also operated by heavy friction clutches put in and out of gear by quick screw and lever attach- ment. Photo is taken from 25—30 b.h.p. Gear work- ng off a Diesel Engine Alien’s Special Plant for making STONE DUST Read the following note on the use of Stone Dust for preventing Colliery Explosions :— It is strange indeed to find how great a difficulty many colliery officials have had, and have, of grasping the ease of application of this preventive. They have no difficulty whatever in coming to an understanding about water, but with dust it seems quite another thing, whereas in principle the two may be looked upon in exactly the same light. If, mentally, incombustible dust is substituted for water, and regarded as a quencher, the whole difficulty disappears. Pour a stream of water upon a fire, and the flame is put out. Pour also a stream of dust upon it, and the same result follows. Moisten coal-dust with water, and it cannot be inflamed. Do so with incombustible dust, and there is the same effect - with this important difference, however : coal-dust wetted with water will dry again ; but when “ wetted ’’ with incombustible dust it will be safe for ever. By the rapid absorption of heat both water and incombustible dust become quenching agents, and act as oxygen excluders. The use of water depends on the continued care of human agency, which may, and does fail, but the guarding care of incombustible dust is automatically constant. Let every cranny and ledge in both roof and sides therefore contain incombustible dust rather than coal-dust, and when once the first-named is in place, there will be no room for the latter ; it will remain always on guard, a perpetual watcher against the miners’ fiery enemy.— Mr. W. C. Blackett, Inst. Mining Engineers, April I2th, 1913. Don’t delay, write at once for full particulars I and hauling at the rate of 8 ft. per second. Two drums each 2 ft. 6 in. dia. x 12 in. wide, 9 in. depth of flange, running on heavy gunmetal bushes. Powerful foot brakes. Built on w.i. girders 6 in. x 14 in. section, and braced together with ■cast iron distance pieces. CHARLES D. PHILLIPS, Emlyn and Central Engineering Works and Foundry, NEWPORT, MON., England. THE ORIGINAL FIRM—ESTABLISHED 1867. Edgar Allen & Co. Limited, IMPERIAL STEEL WORKS, SHEFFIELD. OLLIER Y WIT ■ /A • * ■ Av WST ICiTOHS vfiiIV-Tto A ■ -I /&&&£- Coal Bunkers, Bentley Colliery, Doncaster, for Messrs. Barber, Walker & Co. Capacity, 400 tons. THE YORKSHIRE HENNEBIQUE CONTRACTING Co. Ltd., Viaduct Works, Kirkstall Road, LEEDS. ’Grams—“Ferro, Leeds’' ’Phone—4457 Leeds (two lines}. HENNEBIOUE FERRO-CONCRETE The best construction for all buildings and Engineering work. Used by the Admiralty, War Office, H.M. Office of Works, and the leading Corporations and Companies.