644 THE COLLIERY GUARDIAN. March 30, 1917. area of the stream cm, dill, /ll, ell, is greater than the area ell, dll, /l, el, to allow for the still further addition from the washer 5, and so on. By this means it is possible., to obtain a bed of the grains of higher specific gravity, of uniform thickness, which is essential for a good classifica- tion. (Two claims.) 104137. Improvements in Feed Water Heating and Dis- tributing Devices for Multi-sectional Steam Generators. J. Howden and Company Limited and J. H. Hume, both of '195, Scotland-street, Glasgow.—Relates to improvements in multi-sectional steam generators such as described, for example, in Patents Nos. 26330 of 1908, 27449 of 1910, and 5383 of 1912. The drawing is a vertical section. The generator comprises lower water drums 1 connected to upper water and steam drums 2 by upright tubes 3 fitted into the lube plates 4 and 5/connected respectively to the drums 1 and 2. The drums 1 are mounted above and extend rear- wardly of the grates, the drums 2 projecting rearwardly? of the drums 1 and roofing combustion chambers situated rear- wardly of the upright tubes 3., 6 denotes a steam collecting drum of large diameter disposed transversely of the drums 2 coupled thereto, by coupling pieces 7. Within the drum 6 is a water container 8 on one side of the axis of the idrum, and secured to the drum shell preferably about midway of its length where it? has a valved connection to the feed water supply. Led from the upper part of the container 8.to the drums 2 are branch pipes 9 passed through coupling;pieces 7 and terminating below the water level in the drum 2i. The container 8 also functions as a surface heater, for th'e feed water, the. water condensing on its outer surface being free to pass to the drums 2. It. may also, be traversed by one or more tubes to afford increased heating surface. 10 denotes a drain cock by which the contents of the vessel 8 may be drained off, or sediment blown out. .(Two claims.) 104294. Improvements in the Production of Means for Preventing Fur from Depositing in Boilers and the like. 0. L. K. Andersen, of Struer, Jutland, Denmark.—Relates to agents for preventing boiler .incrustations, said agents comprising, in addition to sodium [^f&pxide, cutch, and grated or pulverised potatoes or. potaJ^Mjibr, that is to say, water in which potatoes have beei/ifipiled. By heating a mixture of these substances, the teipj^afture of the mixture rises considerably above the boiling,’%int of water,, and causes a reaction between the cutch and the sodium hydroxide whereby 'a great part of the catechu is transformed into catechu tannin which, like the tannin already present, forms sodium. salt in solution, while unaffected and undissolved parts of the catechu float on the top. 5 The liquor, which con- tains free alkali, is the substance ; ultimately useL A tvpica 1 mixture consists of : 50 parts (by weight) of cutch, . 25 parts sodium hydroxide, and 25 parts raw, ground, or orated potatoes, mixed and heated. On reaction, there is*5 formed a thick liauid, in 'which sodium hydroxide and ^atechu are dissolved. ; This liquor is suitable for stationary boilers.; Tn other boilers, the quantity of potatoes should be diminished, and the quantity of cutch should be increased. (One claim.) _____________________________ Tempering ’ Coal-Cutting Machine Bits.—A writer in Coal Age has found that a solution of cheap laundry soap and water gives good results at little expense. One cake of soap is used to 25 gals, of water, washing powder being added where the water is too hard, to lather freely. At the begin- ning of the shift this mixture is healed to the boiling point, and the sharpened bits while at a cherry-red heat are thrown into the tempering tub, the hot bits keeping the mixture boiling, ensuring a slowly cooled and evenly tempered'bit. The object is to furnish each machine with plenty of bits, and thus encourage the runner to change them before they become dull.enough to load the machine, believing that it is cheaper to sharpen, bits frequently than to keep< them dull, thus burning out armatures and wearing out cutter chains. __________________________________________________ MEW PATENTS CONNECTED WITH THE COAL AND IRON TRADES. Applications for Patents. [Note.—Applications arranged alphabetically under the names of the applicants (communicators in parentheses). A new number will be given on acceptance, which will replace the application number.] - Aldridge, J. G. W. Apparatus for .screening coal, coke, etc. (4064) . Aldridge and Ranken. Apparatus for screening coal, coke, etc. (4064) Bailes, T. F. Switch for overhead runways. (3939) Bald, C. Self-registering clinometer. (4019) .Barbey, C. /Pistons and cylinders of engines and pumps. (4232) Beswick, J. D. Pumps for liquids. (4214) .Boin, R. Continuous current electric generators. (4174) Brown, J. H. Gas-fired coke ovens and muffle, etc., fur- naces. (4255) Browne, P. Hooks for haulage. (4029) Brundrit, J. Steam generators. (3977) Calvert, G. Centrifugal separators and filters. (3981) Castleman, F. M. Retarder and controller for railway wagons, mining corves, etc. (4018) Clare, T. A. Apparatus- for screening coal, coke, etc. . (4064) . Coley, H. E. Treatment of basic slag. (4004) Durville, P. H. G. Casting ingots of metals and alloys. (4125) Evans, J. L. Closing end or door for colliery trams or corves. (4252) ' Gill, H. A.: .(Jobbins). Process for treating aluminium skimmings, screenings, dross, slags, etc. (4208) Goldstone, M.'H. Electrical cables, flexible cords, etc. (4162) Graham, W. Machinery for crushing or grinding ore, rock, cement, etc. (4039) Gresham, F. J. Brake mechanism for railway, etc., : vehicles. (4154) Guy, T. Coal cutters. (4093) . Hamilton, W. B. Manufacture of grey cast iron. (4112) Harris, E. Strip and tube casters’ ingot moulds. (4086) Herring; E. Boilers for heating by hot water or steam.. (4109) Honegger, G. Expansion valve gear for duplex steam pumps. : (4191) ’ Honey wood, D. Machinery for crushing or grinding ore, rock, cement, etc. (4039) Jackson,: W. J. Mellersh- (Soc. C. M. Stein et Cie.). Blast furnaces. (4292) Johnston, J. Rotary compressors or exhausters. (4289) Kiernan, G. Brake mechanism for railway, etc., vehicles. (4154) Kilburn, B. E. D. (Sulzer Frferes Soc. Anon.). Apparatus fhr heating fuel for combustion engines. (4245) Lambourne, R. Miners’ lamps. (4293) Macleod, A. W. Self-measuring pumps. (4100) Palmer, M. Conveyors. (4117) Ranken, A. W. Apparatus for screening coal, coke, etc. (4064) ' Rannie, G. A. Rope or cord grip or belt buckle. (4254) (Reilly, P. C.). Distilling coal tar, ejc. (3948) Ritte, A. Gas producers. (4124) Sahlin, A. Gas producers. (3988) Simon-Carves Limited. Gas-fired coke ovens and muffle, etc., furnaces. (4255) • , Soc. Anon, des Ateliers de Constructions M^caniques, Escher, Wyss et Cie. Cooling devices in multi-stage centrifugal compressors. (4133) (Soc. C. M. Stein et Cie.). Blast furnaces. (4292) (Sulzer Freres Soc. Anon.).' Apparatus for heating fuel for combustion engines. (4245) Thompson, W. P. (Reilly) Distilling coal tar, etc. (3948) Warner, E. M. Pumps for liquids. (4214) . __ . , Warner and Sons, J. Pumps for liquids. (4214) Wilbraham, E. C. B. Treatment of basic slag. (4004) Wollaston, T. R. Gas generators. (3962) Wollaston, T. R. Gas producers. (3963, 3964) Complete Specifications Accepted. (To be published on April 12.) 1915. 13253. Wellington. Apparatus for discharging coke. 1916. [Note.—The number following the application is that which the specification will finally bear.] 2145. Bennis, A. W. Conveyors, transporters, and the like. (104701) . - 3929. Shill, tA. E., and Vallely, J. Coal-saving and smoke prevention device for steam boilers. (104738) » 4711. Sackett, J., and Cobbett, S. A. . Furnaces. (104766) ___________________________________________________________ 5982. Roy, N. B. Driving belts. (104780) 7251. Hall, I. Furnacef*for melting metals, and for other purposes. (104792) , 7405. Strong, E. G. Belt fasteners. (104794) 12410. Forster, J. P.< Means for the control electrically of the signal indicators used in connection with mine ■- J hauling engines, winding engines, and the like. •; (104828) . 15832. Gralla, J. Driving gear or operating arrangements for compressors or air pumps. (102151) 15952. Burdick, C. L. Purifier for compressed air. (104842) Complete Specifications Open to Public Inspection Before Acceptance. [Note.—The number following the application is that which the specification will finally bear.] 1916. 18630. Walker, 0. Process for production of block fuel. (104865) 1917. 1352. Dragerwerk H. and B. Drager. Diving( gear. (104868) . 1772. Menard, H. C. Transmission mechanism for trans- forming continuous into rotary motion. (104869) 3731. Svenska Turbinfabriks Aktiebolaget Ljungstrom. Turbines; (104878) _________________________ PUBLICATIONS RECEIVED. Laxton’s Price Book for Architects, Builders, Engi- neers, and Contractors, 1917. Originally compiled by William Laxton. London : Kelly’s Directories Limited. Price, 4s. The Journal of the Institute of Metals. Vol. 16. Edited by G. Shaw-Scott. London : The Institute of Metals. “ Lehigh Employes’ Magazine,” February; “ The American Mining Congress Journal ” (Vol. 3, No. 3); “ Bulletin of the American Institute of Mining Engineers,” March; “ List of Officers, Members', Rules, etc., of the American Institute of Minin'g Engineers”; “Industrial Manage- x ment,” March, price 25c.; “ Proceedings of the Engineers’ Society of Western Pennsylvania ” (Vol. 32, No. 9), December 1916; “ New Zealand Mine Statements for 1915,” by W. D. S. MacDonald, Minister of Mines, New Zealand; “The Journal of the Chemical, Metallurgical, and Mining Society of South Africa ” (Vol. 17, No. 7), January, price 2s.; “ Trade of the Union of South Africa, Southern and Northern Rhodesia, and British South Africa for December 1916.” _____________________________ Mr. J. Dyer Lewis, H.M. inspector of mines at Swansea, has been promoted to the position of divisional inspector of mines, South Wales division. - The retiring inspector is Dr. W. N. Atkinson. ; Goal Shipped from Ports in the United Kingdom during February.-—The following figures, which have been extracted from the returns issued by the Commissioners of H.M. Customs and Excise, show the quantities of coal shipped from each group of ports in the United Kingdom during the month of February, as compared with the corresponding month last year :— , / Cargo. Total ............ Bunker. Bristol Channel ports _____...... North-western ports ............... North-eastern ports ........... Humber ports ....................... Other east coast ports ... .... Other English ports _________ Ports on east coast of Scotland Ports on west coast of Scotland Bristol Channel ports ......... North-western ports ... -_____ __ North-eastern ports ... ________ Humber ports .................... Other east coast ports __........ .Other English ports ... ....... Ports on east coast of Scotland.. Ports on west coast of Scotland.. Irish ports__............... Total’ _____........... The coal shipped to ports in England and Wales totalled 539,263 tons; to Scotland,- 40,815 tons; and to Ireland, 348,199 tons. . . 4 ' Feb. 1916. Feb. 1917. Tons. Tons. 112,076 . 97,357 194,010 . .. 194,2^3 445,944 . .. 399,888 62,821 . 56,612 4,505 . 510 2,077 .. 4,931 37,518 ., .. 30,917 101,160 .. .. 143,839 960,111 .. 928,277 Feb. 1916. Feb. 1917. Tons. ‘ Tons. 9,475 .. 7,880 44,256 .. 40,467 50,272 .. 19,350 7,809 .. 7,266 11,481 .. 7,235 3,232 .. 2,524 9,981 .. 6,424 14,393 .. 22,747 2,944 .. 3,844 153,843 .. . 117,737 FASHING PLANT We have Specialised in this class of Machinery, and have designed and made more than all other firms combined. References to users are invited. Established 50 Years. Min iv. D bi n D III U;Ut