424 THE COLLIERY GUARDIAN September 1, 1916. vided with guide plates, angle pieces, or the like 9 in any suitable position thereon to engage the insides of the side pieces c. Similar angle guides may be formed by carrying the top strap h right beyond the side pieces and returning the ends h1 towards the front, so forming return angle guides to engage the outer edges of the vertical pieces. (Three claims.) 12618 (1915). Improvements in Furnace Grates. P. Comet and F. Coulon, both of Bagneres de Bigorre (Hautes Pyrenees, France).—Relates to endless grate conveyors of the kind in which a series of movable elements are loosely mounted on transverse bars or carriers secured to endless chains to form a continuous furnace or grate, the elements being so mounted as to be capable of up and down motion. The parts are so constructed that the vertical movement or play of the various elements varies so as to produce different relative displacements of the elements with regard to one another. Figs. 1 and 2 are a vertical section and a plan of the bars and elements respectively; figs. 3 and 4 are eleva- tions of a separate element; and fig. 5 is an elevation of another element. Fig. 6 is a vertical section showing an element mounted on two bars, and fig. 7 is a vertical section of the front portion of the endless grate. 1 designates a flat bar having flanged edges 2 so as to present a T-shaped cross section. This bar is secured at its ends to endless chains which actuate the whole of the grate. Threaded upon these bars are T-shaped elements, of which the tail 3 is cut out correspondingly, so as to comprise a narrow recess 4 and a wider recess 5. The height of this recess 5 varies in different elements; for certain elements a the height is only slightly more than the thickness of the flanges 2, so that when the bar is reversed these elements are not materially displaced’ with regard thereto. In the elements b and b1 the recess 5 is deeper, and it is deeper still in the elements c, so that when the bar is reversed these elements drop downwardly with regard to the bar to different extents. It, therefore, suffices that the elements a, b or b1, c are arranged alternately in order that the successive elements are displaced with regard to one another in a desired manner, in order to ensure the clearing of the open- ings for the passage of air between the elements. The transverse portions or wings 6 of the ele- ments are preferably of triangular shape, and in transverse section drawn in towards the bottom; they may form an angle as is indicated in the elements a and b (fig. 2) or be arranged in the same plane as indicated in the ele- ments b1 and c, which plane may be at right angles or oblique to that of the bar. The elements at the ends of the bars are preferably stronger than the others, and of a convenient shape, so that the whole of the bars provided with its elements may constitute a rectangular portion of the surface of the grate. On the wings of the elements may be arranged small projections 7 adapted to maintain the correct distance between the elements and their parallelism. Although,' generally the action of gravity alone will suffice to ensure the return of the elements to their seats when they ‘arrive at the upper portion of the grate, provision may be made at the, commencement of the latter of a roller arranged horizontally and mounted in vertical or inclined bearings, or, by prefer- ence, acted upon by springs, or in other ways adapted to force the elements to resume their normal position before they are charged afresh with coal. In fig. 7 a roller 11 is shown vertically movable in bearings 12, a spring 13 being provided to press the roller downwards, the roller acting on each element as it comes forward and pressing it down to its normal position. Instead of arranging > each element to be supported by one single bar, it may be made a little longer and be supported near its extremities by two bars, as indi- cated, for example, in fig. 6. (Five claims.) Hull Coal Exports.—The official return of the exports of coal from Hull to foreign countries for the week ending August 22, 1916, is as follows:—Amsterdam, 301 tons; Alexandria, 793; Alderney, 135; Blaye, 3,472; Dunkirk, 98; Gothenburg, 2,095; Genoa, 7,144; Gravelines, 186; Guern- sey, 675; Harnas, 2,010; Naples, 974; Nantefe, 1,437; Rouen, 10,731; Rotterdam, 695; Stockholm, 1,629 — total, 32,375 tong. Corresponding period August 1915—total, 37,975 tons; corresponding period August 1914—total, 24,190 tons. These figures do not include bunker coal, shipments for the British Admiralty, nor the Allies’ Governments. 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.] Aitken, T. W. (11828). Crucible furnaces for melting metals. Ay ton, R. (11962). Internal combustion engines. Bark, W. T. (11830). Means for effecting removal of carbon deposit from retorts. Bell, F. G., and Davey, W. C. (11972). Mine signalling keys. Bird, T. G. (11831). Boiler tube expander. Brooke, H. L. (11952). Automatic pulley and shaft governor. Chambers, E. V., Hammond, G. C., and Richardson, C. K. (11937). Process for obtaining sulphite of ammonia from coal gas. Cherry, W. (11881). Heaters for oil fuel, feed water, steam drying, and superheating, etc. Chesterman, W. (12018). Manufacture of steel and its alloys. Davis, G. K. (11964). Gas washers, etc. Denton, J. J. (11844). Producing and controlling high tem- peratures in furnaces. (Deutsche Babcock- und Wilcox- Dampfkessel-Werke Akt.- Ges.) (12114). Water tube boilers. Du Pont de Nemours and Company, E. I. (12069). Drill- ing apparatus. Dyson, S. (11813). Liquid fuel, and method of manufac- turing same. Forwood, G. F. (12027). Treatment of hydrocarbons. Graham, W., and Honeywood, D. (11841). Machinery for crushing or grinding ore, rock, cement, etc. Greer, D. (11958). Automatic combined boiler feed and feed HalkZtTRh€(12O37). Liquid fuel burner. Harris, J. H. (11887). Internal combustion turbine engines. Helps, G. (12011). Utilisation and combustion of fuel. Hurst Limited, C. (12089). Internal combustion engines. Hutson, T. W. (12104). Rotary internal combustion and steam engine. Keith, G. and J. (11853). Art of lining crucible furnaces Kelly, T. D. (11847). Fuel. King, A. (12055). Internal combustion engines. Marvin, C. J. (11973). Generating gas. Morrison, W. (11823). Rotary motor. Paterson, T. W. (11818). Liquid fuej for internal combus- tion engines. Patton, A. M. (12089). Internal combustion engines. Lavlides, P. (11869). Construction and arrangement of tur- bine machinery. Reynolds, B. G. (12009). Steam distribution valves. Ricardo, H. R. (11912). Internal combustion engines. Ricardo, H. R. (11977). Fuel supply pumps. Ross and Company, R. L. (11858). Safety valves for boilers. Sanders, G. A., and Steele, C. C. D. (12050). Substitute for petrol. Sterling Telephone and Electric Company (11972). Mine signalling keys. Torbinia Engineering Company (12055). Internal combus- tion engines. Walker, E. O. (11918). Internal combustion engines. Weller, J. (12054). Valve mechanism. Complete Specifications Accepted. (To be published on September 14.) 1915. 7506. Pneumatic, cleaning or conveying plant. Bennis. 7535. Process and apparatus for cracking hydrocarbons and separating resulting products. Lewis. 10679. Method of and apparatus for obtaining oils, spirits, and gases from peat or other materials or sub- stances. Macnicol. 11911. Firebrick chequer work used in regenerative chambers and the like. Gibbons Brothers Limited, and Clark. 12349. Automatic traps or dischargers for draining oil separators, condensers, exhaust pipes, and the like. Baker, and Bakers (Leeds) Limited. 12821. Method of operation for internal combustion engines. Dumanois. 13248. Devices for controlling the furnaces of low-pressure steam boilers, etc. Mellersh-Jackson (Ware Coup- ling and Nipple Company). 13677. Rotary piston internal combustion engine. Wheatley. 16204. Reducing valves, particularly adapted for use in con- nection with breathing apparatus. Hanseatische Apparatebau-Ges. vorm.'L. von Bremen and Com- pany. 17724. Internal combustion engines. Samain. 18185. Controllers for colliery tubs, tipping trucks, and the like. Neil. 1916. [Note.—The numbers following the application are those which the application will finally bear.] 345. Air compressors. Reavell, W., and Jones, E. W. 100146 870. Manufacture of compressed fuel. Hani, J. 100166 2529. Means for supplying air to furnaces, stoves, and the like. Brown, W. H. 101172 3045. Pistons. Chedru, G. E. 101174 4605. Water tube boilers. Noble, E. E. 101184 8533. Electric furnaces of the electrode type. Kitchen, H. J., and Balmforth and Company, T. 101201 Complete Specifications Open to Public Inspection Before Acceptance. 1916. [Note.—The numbers following the application are those which the application will finally bear.] 10169. Rotary compressors. Algrin, R. 101210 11202. Process for the production of ammonia from coke. Aarts, J. G. 101154 11203. Carbonising or reducing furnaces. Aarts, J. G. 101215 11574. Method for preventing the choking up of gas plant. Riedel, A. 101219 11575. Method for operating gas generators. Riedel, A. 101220 GOVERNMENT PUBLICATIONS. ***Any of the following publications may be obtained on application at this office at the price named post free. Trading with Enemy : Prohibited Firms (Black List No. 7), l|d. Merchant Shipping Salvage Act, Id. Correspondence re Swedish Detention of Mail to Russia (Cd. 8322), 4£d. PUBLICATIONS RECEIVED. “ Explosibility of Gases from Mine Fires,” by G. A. Burrell and G. G. Oberfell (Bureau of Mines, U.S.A.); ‘‘Some Properties of the Water in Coal,” by H. C. Porter and O. C. Ralston (Bureau of Mines, U.S.A.); ‘‘ Coal Mine Fatalities in the United States, 1915,” by A. H. Fay (Bureau of Mines, U.S.A.); ‘‘Journal of the Western Society of Engineers ” (Vol. 21, No. 2); “ Annual Report of the Melbourne Chamber of Commerce, 1915-16”; “ Transactions of the Institution of Mining Engineers ” (Vol. 51, Part 4); “ How to Claim Repayment of Income- Tax for 1916-17,” published by F. C. Mathieson and Sons, price Is. Fuel Economy and Smoke Prevention.—An interim report prepared by the Committee on Fuel Economy and Smoke Prevention will be presented and discussed at a joint meet- ing of the Chemical and Engineering sections of the British Association at Newcastle-on-Tyne on Friday, September 8. The Fuel Economy Committee was appointed, under the chairmanship of Prof. William A. Bone, at the Manchester meeting of the British Association a year ago; and the follow- ing committee, representative of the chemical and engineer^ ing industries of the country, has since been got together :— Prof. W. A. Bone, Imperial College of Science and Tech- nology, London; Prof. H. B. Dixon, University, Man- chester; Prof. E. F. Bedson, Armstrong College, Newcastle; Prof. T. Gray, Royal Technical College, Glasgow; Prof. L. T. O’Shea, University, Sheffield; Prof. W. P. Wynne, University, Sheffield; Prof. R. Threlfall, Birmingham; Dr. G. T. Beil'by, F.R.S., E. Bury, Esq., Dr. J. T. Stead, F. R.S., Dr. Hele-Shaw, F.R.S., Sir R. Hadfield, F.R.S., Dr-. D. Clerk, F.R.S., H. J. Yates, Esq., R. Mond, Esq., C. H. Merz, Esq., Dr. J. T. Dunn, G. Blake Walker, Esq., T. Y. Greener, Esq., Dr. W. Galloway, Dr. J. W. Mellor, Lord Allerton, Dr. A. Strahan, F.R.S., Sir R. Redmayne, Hon. Sir C. A. Parsons, Prof. Ripper, University, Sheffield; G. Jones, Esq., Dr. R. V. Wheeler, Prof. W. W. H. Gee, R. Armitage, Esq., J. A. F. Aspinall, Esq., Sir H. Bell, A. H. Barker, Esq., L. Z. de Ferranti, Esq., D. H. Helps, Esq., W. W. Lackie, Esq., M. Longridge, Esq., B. Moore, Esq., Dr. L. Hill, R. P. Sloane, Esq., C. E. Stromeyer, Esq., B. Talbot, Esq., W. B. Woodhouse, Esq., Prof. J. O. Arnold, and Mr. Winder. The field of enquiry has been divided up among the following five sub-committees :—(1) Chemical and statistical; (2) powder and st-eam raising; (3) metallurgical, ceramic, and refractory material industries; (4) carbonisation of coal; (5) domestic consumption and smoke prevention. Each sub-committee has prepared an interim report, indicating the lines on which it proposes to work towards the preparation of a final report. In order that the discussion may be organised on the best possible lines in the time available, it is requested that any person wishing to take part therein should communicate with Mr. E. D. Simon, 20, Mount-street, Manchester, stating the particular aspect of the subject upon which he wishes to speak. THOMPSON & CO., -------------- WIGAN, ------------ Iron Merchants, Metal and Mineral Agents. RAILS OF EVERY DESCRIPTION, WITH FITTINGS COMPLETE, FOR COLLIERIES, CONTRACTORS, &o. SOLE AGENTS IN THE DISTRICT FOR THE SALE OF Wigan Coal & Iron Co.’s Siemens Steel Billets, Blooms, Bars, Angles, Bails, &c. SPECIALITY: STEEL FOR WAGON COUPLINGS. K. H. FORGE, FOUNDRY & DASIC PIG IRON. Also Spiegeleisen, Ferro-Manganese & Silico Spiegel. Nobol’s c Gelignite, Potarite, Dynobel, Ajax Powder, Monobel No. 1, Cambrlte, Victor Powder and Oo. ftrfftAI Monobel; also Detonators, Electric Detonator Fuses, and all Blasting Appliances. H aggie Brothers Ld. Wire & Hemp Ropes. POOLEY’S PATENT WEIGHING MACHINES. Telegraphic Address—“SPIEGEL, WIGAN.” OF TUBES June 27th, from £ in. to 4 in. Black Gas 72 miles Red Steam 65 „ Galvanised Gas 45 „ Galvanised Steam 40 „ TOTAL STOCK 222 miles Send Specification for Prices. Warehouses : Leeds, and Trafford Park, Manchester. S. DIXON & SON LD., Swinegate, LEEDS. Telegrams—‘‘Brass, Leeds.” Phone—3600 (3 lines).