410 THE COLLIERY GUARDIAN. February 21, 1913, shaft. The system followed is especially applicable to the sinking of mine shafts, and consists in excavating in firm ground, at a suitable depth below the bed of loose sand, a gallery for the reception of the piping for the congealing apparatus, and from which extend upward a number of tubes serving as guides for the boring tools and provided with outlets for the removal of debris and water. Fig. 1 is a section through the bed of loose sand and the circular gallery; and fig. 2 is a detail drawing of a portion of one of the guide tubes for the boring tool. (Two claims.) Colliery Developments in West Cumberland.—The busy hive of industry recently created at Great Clifton, near Workington, by the Allerdale Coal Company's introduction of the by-product ovens is to be further augmented by the sinking of another shaft for their present colliery at Great Clifton. The contract for the sinking of the shaft has already been let, and the first sod was cut on Saturday. The work is to be pushed forward as speedily as possible, in order to cope with the ever-increasing demands for coal to keep the coke ovens in full swing. The shaft is to be sunk to the company's seams, and will also join the seams at present being worked. By means of another shaft the company will be able to put on an additional shift of men, and also to utilise one of the shafts for the almost constant drawing of coal. This will give employment to a large number of additional men, and will come as welcome news to Workington, where, owing to the lack of houses in Great Clifton and district, most of the men employed at the by-product works reside. There is a great want of houses in the village, and the colliery company, it is stated, contemplate the erection of a new block of property near the present workmen's dwellings at Great Clifton. HEW PATENTS COHHECTED WITH THE COAL AHD IRON TRADES. Applications for Patents. 3354. Cast iron and process of producing same. B. Anderson. 3356. Weighing machines. G. Poore and H. A. Harvey and Co. Limited. 3360. Tipping trucks. J. E. Purdy and F. Nasmith. 3368. Stokers. W. H. H. Stineman. 3375. Construction of coke ovens. J. Moeller and H. C. Woltereck. 3391. Derricks. T. S. McLendon. 3408. Pump. G. Constantinescu. 3409. Sand blast apparatus. E. C. B. Marks. 3419. Pneumatic-power hammers. J. M. Boss. 3426. Clutch coupling or brake. H. J. Thomson and Thomas Transmission Limited. 3453. Pumping systems. H. F. Bosencrans. 3472. Device for automatically replacing derailed railway wagons, colliery trains and the like whilst in motion. W. F. P. Smith and D. T. Bees. 3476. Suction gas producers. F. H. Livens. 3518. Suction pumps. O. Haase. 3542. Pumps. W. S. Franklin. 3567. Lubrication of the wheels and axles of railway, tramway, and the like vehicles. J. Abbott. 3586. Bock drills. W. L. Smith. 3613. Bricks or quarries for use in the bottoms of ovens and kilns, but applicable also for other purposes. C. T. H. Phillips. 3615. Spray-producers. J. B. Parker. 3621. Jigs, classifiers and jig-classifiers for ores, coal, and the like. W. A. Harris. 3653. Pumps. B. C. Joy. 3658. Guards for air propellers or fans. Pintsch's Electric Manufacturing Company Limited and C. H. Vidal. 3672. Process and apparatus for the gasification of fuels containing volatile constituents. F. C. W. Timm. 3673. Process and apparatus for the gasification of frag- mentary, gritty, or powdery fuels. F. C. W. Timm. 3681. Superheating systems for water-tube boilers. Vulcan- Werke Hamburg und Stettiner Akt.-Ges. 3753. Process for obtaining adhesive coatings of copper upon iron and steel. S. O. Cowper-Coles. 3754. Process for coating metallic articles with brats. S. O. Cowper-Coles. 3755. Process for coating metallic articles with lead. S. O. Cowper-Coles. 3762. Feed-pumps. W. Hildebrand and Knorr-Bremse Akt.-Ges. 3778. Steam-superheaters. G. V. V. Hutchinson and E. E. L. Maunsell. 3784. Appliance for consuming coaldust and similar fuels of domestic hearths. C. G Moor. 3785. Means of effecting more perfect combustion of fuel and prevention of smoke from boiler and other furnaces. A. Storey. 3814. Becovery of nickel from its ores. H. L. Sulman, H. F. K. Picard, and A. E. Boberts. 3819. Manufacture of coke for metallurgical and other purposes and its application in the blastfurnace process of smelting iron. M. Lugowzoff. 3835. Method of constructing and fitting composite zinc and carbon plates for prevention of pitting and corrosion inside steam boilers. C. Haythorpe. 3871. Turbo-blower. T. H. C. Homersham and H. T. White. 3973. Miners' safety or like lamps. E. A. Hailwood. Complete Specifications Accepted. To be published on March 6. 1912. 210. Means for imparting rotation to a shaft or the like. Halls worth. 3367. Method of extracting the natural moisture from bog peat. Elborne and Godpal. 3368. Method of extracting iron from what are commonly known as iron sands. Elbourne and Godsal. 3507. Hydraulic rams, fitting them to serve as air- compressors. Hill, Hill, and Hill. 5000. Steam boilers and other like furnaces. Groves and Dalrymple. 6520. Devices for detecting incomplete combustion or black smoke in the furnaces of boilers. Carr. 9098. Steam superheaters for marine and like tubular boilers. Bobinson. 9623. Apparatus for use in the analysis of gases. Harger. 11752. Weighing machines. Booth and Southerton. 12204. Automatic weighing apparatus. Gibbs and Johnson. 17771. Safety valves of diving apparatus. Dragerwerk Heinr. and Bernh. Drager. 18680. Fusible plugs for air compressors. Hodges and McCaffrey. 19097. Betort furnaces or the like having upwardly tapering vertical retorts. Stettiner Chamotte-Fabrik Akt.- Ges. vorm. Didier. 21441. Distillation of slate and other bituminous substances. Noad. 21534. Steam generators. Steinmuller. 22217. Conveyor shoots or shaker channels. Kreiss. 24440. Process for the production of tool steel and other high-grade steels. Dellwik-Fleischer Wassergas Ges. 25482. Metallic packing for piston and like rods. Copeland. Complete Specifications open to Public Inspection before Acceptance. 1912. 18598. Treating ores. Kerr. 28197. Centrifugal pumps and compressors or the like. Akt.-Ges. der Maschinenfabriken Escher Wyss et Cie. 1913. 3102. Explosive compositions. Soc. L'Air Liquide. 3262. Separators. Fredrickson. Boring operations have been commenced about mid-way between St. Helens No. 2 Colliery and St. Helens No. 3 Colliery at Siddick, near Workington. The work is being carried out by a Glasgow firm of borers for the St. Helens Colliery Company, the object being to prove some virgin ground between the two pits. THE GAS WORLD of Saturday next (March ist), and subsequently on the first Saturday of every month, will contain a special Supplement, consisting of at least 16 pages, written by practical experts, dealing with COKING AND BY-PRODUCTS Next Saturday’s Supplement will contain articles on the Rise and Development of By-Product Coking—Types of Modern Coke Ovens: (i) The Coppee Installation at Hardwick Colliery, Heath—Utilisation of Surplus Energy from Coke Oven Plants—Labour Economy on Recently Constructed By-Product Coke Oven Plant, by A. Thau—Notes on Progress and Prospects—New Coke Oven Charging Lorries —Benzol as a Petrol Substitute—Gas and Ammonia Plant in China—Sulphate of Ammonia in Japan and U.S.A.—and many other items of considerable interest. “The Gas World,” which has THE LARGEST CIRCULATION of any gas paper in the World, can be ordered from any newsagent or bookstall, price 4d., or by post from this office 4|d. JOHN ALLAN & CO., 8, Bouverie Street, London, E.C.