1210 THE COLLIERY GUARDIAN. May 29, 1914. 16318 (1913). Improvements in and relating to Ovens for Generating Gas and Producing Coke. H. Koppers, of 29, Moltkestrasse, Essen-Ruhr, Germany.—Relates to vertical retorts having in their walls horizontal heating flues com- municating with regenerators, by means of vertically dis- tributed ports, the gases flowing horizontally through said flues, and regenerators. The invention essentially consists in providing at each end of the flues a regenerator chamber which is traversed alternately by hot gases and cold gases, that is to say a so-called reversible regenerator, which regenerator may be provided with horizontal partitions dividing them into independent units through which the gases flow to and from the ports of the flues, in a manner known in connection with retorts of the type to which the invention relates. The regenerators may be arranged at opposite sides of the retort or oven, the heating flues forming short straight passages between them, or they may be arranged at one side only, the heating flues passing around the oven chambers, receiving gas and air from hot regenerator chambers, and delivering the products of com- bustion to cold regenerator chambers on the same side. In both cases the ports distributed over the whole height of the oven, between the heating flues and the regenerators ensure that the latter are fully utilised, and the interposition of the reversible regenerators in the path of the gases ensures that a horizontal direction of flow is maintained at the ends of the flues, as well as in the latter, the path of least resistance through the regenerators being a horizontal one, and the gases having therefore less tendency to take diagonal paths from and to the main inlet and outlet ports respectively. In order to provide for obtaining different heat zones, the regenerators in one modification are divided at different heights into separate compartments by horizontal partitions, each compartment being capable of being independently con- trolled. This control is preferably effected by slides by which the quantity of air admitted from a chamber common to all the vertically disposed compartments, or the exit of the waste gases, can be accurately regulated. With this arrangement it is possible to heat certain compartments more intensely than others, by outside adjustment. The sides of the oven chamber may be given a greater inclination at the top than at the bottom, with the result that the adherence of the coke,due to certain levels of the chamber being more intensely heated than others, is avoided. The oven or retort may be constructed for intermittent or continuous operation, and the whole arrangement is very compact and easily inspected, particularly as regards the heating flues ; the space under- neath the oven is entirely free; the loss of heat by radiation very small. Two forms of construction according to the invention are shown in the accompanying drawings in which figs. 1 and 2 are a vertical and horizontal section respectively of a bank of ovens with the regenerators arranged on the left and right hand side of the oven chambers, and figs. 3 and 4 are similar views of a con- struction wherein the regenerators are all at one side, some being used for absorbing heat from the waste gases while the others are heating the fresh gas and air supplied. (Three claims.) 27977 (1913). Improvements in Tanks for Separating Combustible Liquids and Solid Matters from Waste Water. —A. Kutzer, of Thielmannstrasse, 20c, Leipzig-Stunz, Germany.—Relates to tanks for separating oil, benzine and other inflammable liquids from waste water prior to discharge of the water into sewers, and for retaining solid matters. For the separation of the inflammable liquids, the tank is provided with a discharge conduit or receptacle whereof the intake end lies above the level of an orifice through which the waste water overflows from the tank, and over the said conduit is placed a bell which dips into the liquid in the tank. A strainer is placed over this bell, and is accordingly easily accessible, for cleansing purposes. Two forms of /zy. 7 A< 9 b construction are shown in vertical section, in figs. 1 and 2 respectively. The liquids entering the tank take a course as indicated in the drawing by arrows. The oil rises to the surface under the bell, and overflows into the pipe h. Undue pressure due to vapours under the bell, and to air entering the same in the form of bubbles, is prevented by the fact that such vapours and air can freely escape through the pipes h and i. In the construction shown in fig. 2, an oil receptacle h11 is substituted for the overflow pipe h, the rim h111 of this receptacle being above the level of the part d1. (Five claims.) NEW PATENTS CONNECTED WITH THE COAL AND IRON TRADES. Applications for Patents. 12190. Turbine engines. A. E. Buck. 12198. Means for distilling and gasifying solid carbonaceous matter and recovering gaseous products there- from. G. P. Lewis. 12210. Electric fuse devices, safety cartridges, or the like. Siemens Brothers Dynamo Works Limited, (Siemens-Schuckertwerke G. m. b. H., Germany.) 12217. Mechanical shears. M. Kipper. 12224. Pumps. H. Davey. 12254. Retorts for the distillation of shale. J. W. Fell. 12256. Process of regulating the temperature of combustion. A. G. Glasgow. (J. M. Rusby and J. H. Taussig, United States.) 12257. Process of controlling combustion. A. G. Glasgow. (J. M. Rusby, United States.) 12296. Chain-grate stokers. H. Flinn. 12323. Moulds for the moulding of clay and the like materials. T. Sutcliffe. 12351. Mills or apparatus for crushing ore and other materials. G. A. Robertson and D. Robertson. 12352. Stacking, drying, and discharging bricks or blocks, especially peat blocks. J. Phillimore. 12376. Safety braking devices for colliery tubs, railway wagons, and the like. G. E. Young. 12400. Gas producers. T. R. Wollaston. 12401. Pedestal bearings for colliery corves. J. IT. Potter, F. C. Moorwood, and J. A. Potter. 12413. Carbonating apparatus for water softening plant. G. W. Bemrose. 12417. Gas supply for armoured diving suits. Neufeldt and Kuhnke. 12419. Diving devices. Neufeldt and Kuhnke. 12420. Hand member for divers’ armour. Neufeldt and Kuhnke. 12421. Divers’ or submarine armour. W. P. Thompson. (Neufeldt and Kuhnke.) 12422. Water and pressure tight ball joints. W. P. Thomp- son. (Neufeldt and Kuhnke.) 12425. Formation of metal ingots and the like. J. H. Darby. 12426. Oil extraction process. H. Edwards and R. Garvey. 12449. Heat accumulators. H. Wade. (Maschinenbau Akt.-Ges. Balcke, Germany.) 12454. Absorbent medium for carbonic acid gas. J. Cadman. 12457. Lifts, elevators, travelling conveyors, and the like. H. C. Parker. 12463. Process of purifying gas. A. G. Glasgow. (C. J. O’Donnell and A. F. Kunberger, United States.) 12479. Electric welding. Allgemeine Elektricitats-Ges. 12493. Method of controlling the attachment of lump iron to suspended electro-magnets. J. D. Latimer. 12503. Brake apparatus for railway wagons or like vehicles. C. Hopkins. 12513. Respiration apparatus for use in atmosphere contain- ing noxious gases. Sir W. E. Garforth. 12546. Ingot moulds. E. Lewis. 12547 and 12548. Pumps or compressors. E. W. H. McMichael and R. G. Williams. 12563. Valve for percussive rock drills. W. R. Tindall. 12567. Methods of and apparatus for utilising exhaust steam. W. W. Freeman. 12568. Supply nozzles arranged at the admission of the lower tube of Belleville elements. Soc. Anon, des Etablissements Delaunay-Belleville. 12572. Manufacture of steel. K. Canaris. 12578. Coke-heated annealing and hardening furnaces. J. King, I. R. Burnett, and Richmond Gas Stove and Meter Company Limited. 12580. Kilns for burning bricks, tiles, and other fictile pro- ducts. J. W. Redfern and C. Dean. 12582. Fire grates for gas-producer furnaces. W. P. Gib- bons and C. J. McEwen. 12598. Manufacture of chilled-iron wheels and other cast- ings. Miller and Company Limited, and J. White. 12599. Fittings for metallic conduit systems for housing electrical conductors. Simplex Conduits Limited, and L. M. Waterhouse. 12612. Chill rolls. W. H. Davies and W. J. Richards. 12622. Marine geared turbine installations. Hon. Sir C. A. Parsons, A. Q. Carnegie, and S. S. Cook. 12623. Condensing plant. Hon. Sir C. A. Parsons, S. S. Cook, and R. Howe. 12640. Method of smokeless combustion with a supply of secondary air. E. Enke. 12646. Process for the reduction of metal from ores. T. Scott. 12653. Cracking oil. O. H. Valpy and O. D. Lucas. 12664. Furnace doors. G. E. Waterston. 12680. Process for the extraction of sulphur from the dis- tillation gases of coal. E. Ciselet and C. Deguide. 12697. Signalling appliances for collieries and the like. R. Robertson and J. Bowman. 12708. Shackles for use with colliery and other trucks. J. A. Noel. 12711. Valve seats. L. F. Norrie and I. Hopkinson and Company Limited. 12713. Principle of signalling for mines and the like. A. G. Price. 12721. Electrical signalling apparatus. W. A. Heyes and L. O. Heyes. 12733. Railway rolling stock. N. H. Babson and A. F. Pittee.' 12741. Self-contained breathing apparatus. R. H. Davis. 12752. Automatic tipping buckets. W. J. S. Perkins. 12753. Stirring or agitating devices for use in connection with metallurgical furnaces, crucibles, and the like. C. H. Ivinson and E. Le Bas. 12759. Manufacture of bricks and the like. J. F. Leger. 12762. Method of making steel. W. G. Nichols. Complete Specifications Accepted. To be published June 11. 1913. 4105. Mechanism for effecting the discharging or charging of retorts used in the manufacture of gas and for like purposes. Drakes Dimited, and Dobson. 4292. Treatment of Iron. Dismore. 6530. Process for the production of cast iron. Gregory. 9354. Centrifugal pumps. Siemens-Schuckertwerke Ges. 11406. Hutches for use in collieries and the like. Reid. 11554. Machines for use in mining minerals, particularly adapted for use in mining coal and the like. Mavor and Coulson Limited, and Mavor. 11984. Method of and means for removing deleterious sub- stances from tar, tar oils, or pitch. Ross. 12059. Treatment of oils for cracking them, particularly for the manufacture of liquid combustibles. Luck. 12067. Chambers used in the manufacture of sulphuric acid. Mills, Packard, and Edward Packard and Com- pany. 12119. Means for automatically gathering up slack in operating mechanism or gear such as brake operating mechanism used on cars, wagons, and other rolling stock. Metropolitan Carriage, Wagon and Finance Company, Grigg, and Swift. 12191. Apparatus for mixing, washing, and screening materials, and for other purposes. Price. 12233. Production of a fuel. Franke. 12338. Heating of vertical retorts for carbonising coal. Duckham. 12419. Conveyors or screens for coal or other minerals or materials. Berrisford. 12527. Means for indicating or recording, or indicating and recording when a storage battery has been charged or discharged to a desired extent. Rankin and Electrical Power Storage Company. 12756. Machine for compressing or moulding plastic sub- stances. Schueler. 12976. Apparatus for drawing and charging gas retorts. Bird and Ha/ter. 12979. Manufacture and production of ammonium sulphate. Johnson. (Badische Anilin and Soda Fabrik.) 13414. Manufacture of metallic articles, such as gun barrels and turbine blades, which require great power of resistance to corrosion that is against the influences of moist air, water, sea water, and the like (not acids). Basel. 13415. Metal articles, such as vessels, tubes, and parts of machinery, which require great power of resist- ance to attack by acids and great strength. Basel. 13987. Apparatus for washing ore. Brackelsberg. 14439. Mechanism of steam boiler furnaces to be employed for facilitating combustion and the prevention of smoke. Ramsbottom. 15275. Method of and apparatus for strengthening sub- strata. Ferrar. 17519. Manufacture of briquettes. Fohr and Kleinschmidt. 17676. Gas analysis apparatus. Taplay and Abady. 17900. Hose for hydraulic or pneumatic machines. Muskett. 18856. Purifying steel. Humbert. 21817. Detonators. Nobel’s Explosives Company, Corrie, and Ashcroft. 22148. Steam turbines. Mensforth. 24489. Turbines. Knourek. 24839. Explosive substances. Claessen. 28,133. Grab. Ansell. 29494. Coke ovens. Schuster. 1914. 2092. Arrangements for transmitting and receiving signals. Siemens Brothers and Company. (Siemens and Halske Akt.-Ges.) 4420. Automatic coupling for railway cars. Liedtke. Complete Specifications open to Public Inspection before Acceptance. .1913. 25588. Reversing regenerative furnaces. Knox. 1914. 1738. Method of and means for sinking wells and making holes in the ground for piles, posts, and the like. Wilhelmi. 10537. Apparatus for cutting sectional iron. Berliner Erfurter Maschinenfabrik Henry Pels and Com- pany. 10598. furnaces. MacCallum. 11236. Method of tracing or determining admixtures or vari- ations in the composition of gases. Haber and another. 11743. Ore roasting furnaces. Bracq. 11746. Motors for intermittent conveyors. Forster’sche Maschinenbau und Armaturenfabrik Akt.-Ges, 11815 and 11816. Rotary fans, compressors, and pumps. Soc. d’Exploitation des. Appareils Rateau. GOVERNMENT PUBLICATIONS. Any of the following publications may be obtained on application to this office at the price named post free. Inter-Imperial Trade Return, Id. Foreign Trade Return, Id. Foreign Trade Accounts up to May 11, 6d. Board of Education Special Report on School and Employ- ment in the United States, Is. lOd. Board of Education Final Order (No. 120), Id. Report of the Royal Scottish Museum, Edinburgh, 2Jd. Education, Scotland Return, 8d. University of Sheffield Bill Report, Id. Rosy th Housing Return, Id. Railway Accidents Returns during 1913, 5Jd. Bills : Truck, ljd.; Old Age Homes, Id. ; Finance, 4d. Handbook on London Trades : Engineering, 3d. Royal Commission on Railways, 18th and 19th Days’ Evidence, Is. Id. each. Consular and Trade Reports : Brazil, Porto Alegre for 1913, 3d.; Belgium, Antwerp for 1913, 2Jd.; Paraguay Budget for 1914, Id.; Report for Egynt and Sudan,. 9Jd. . Navy Oil, Full Agreement with the Anglo-Persian Oil Company Limited, 8d. Pauperism Statement for April, IJd. PUBLICATIONS RECEIVED. Safety Lamps and the Detection of Firedamp in Mines. By G. Foster. London : G. Routledge and Sons Limited. Price Is. 6d. “ Transactions of the Manchester Geological and Mining Society” (Vol. 33, Parts 10-12); “Proceedings of the South Wales Institute of Engineers ” (Vol. 30, No. 2), price 5s.; “ The Journal of the South African Institute of Engineers” (Vol. 12, No. 10), May, price 2s.; “The Monthly Magazine of the Liverpool Chamber of Com- merce ” (Vol. 12, No. 5), May, price 3d.; “ Bulletin of the American Institute of Mining Engineers ” (No. 89), May; “ Report of the Department of Mines of Penn- sylvania, 1912; Part 1—Anthracite; Part 2—Bituminous.”