564 THE COLLIERY GUARDIAN. March 14, 1913. 4 per cent, of sulphur, satisfactory results may be obtained by employing about 1 part to 2 parts of slacked lime to 16 parts of crushed shale, by weight. The quantity of water necessary to cause adhesion of the slacked lime as a completely enveloping coating will depend upon the quan- tity of slacked lime and may be readily determined in practice. In the example aforesaid, about 1 oz. of water to 1 lb. of crushed shale gives satisfactory results. In lieu of or in addition to using water, the sludge from the distilled oil may be employed in similar manner to form a liquid coating for causing the slacked lime to adhere to the granules of shales as a completely enveloping coating. In this way, the advantage of redistilling the sludge is obtained. In lieu of water or sludge, crude oil or the like may be used. By gradually feeding the thus lime-coated shale granules into the retort and working them down from ledge to ledge, the shale granules are prevented from clotting together and the escape of the volatile constituents is facilitated. The preferred construction of retort for use in carrying out the invention is described and illustrated in the Specification of Patent No. 18334 dated August 9, 1909. (Two claims.) 22217 (1912). Improvements in Conveyor Shoots or Shaker Channels. W. E. Kreiss, of 46, Hofweg, Hamburg.—This invention relates to conveyor shoots |or shaker trays or channels, which are reciprocated in a known manner to convey material fed to the same at one end. According to the invention, horizontal elastic or flexible elements are used, to which the shoot or its posts are connected, and which are fastened in a suitable manner. By these means the shoot does not require so much head room, the flexible elements increase the durability, and the supports may be arranged at a greater distance apart than heretofore. Fig. 1 shows an elevation and fig. 2 a cross-section of a recipro- cating shoot supported according to the present invention. (Three claims.) Electrical Plant in the North of England.—-The New- castle-upon-Tyne Electric Supply Company are installing new screening plant at the Cramlington Coal Company’s Hartford pit. The 100-horse power motor, supplied by Messrs. J. H. Holmes and Co. Limited, is of the slip ring type with a speed of 300 revolutions per minute, and a voltage of 2,650, whilst the controllers are of the Allen- West type. At the same pit a three-throw ram pump has recently been installed, the motor being of Crompton’s slip ring type, 180-horse power and 2,750 volts. At the Cramlington Company’s Dudley pit a new 90-horse power electric haulage is shortly to be installed. At the Rising Sun pit of the Wallsend and Hebburn Coal Company two new compressor plants have been completed, and the Supply Company are also installing at the same pit a new 100-horse power electrical haulage and a 15-horse power electric pump. For the Jane pit of the Walker Company Limited a 110-horse power underground electric haulage has been completed, and at the Seghill pit two new electric pumps of 90 and 15-horse power respectivey are being installed by the Newcastle-upon-Tyne Electric Supply Company for Messrs. Laycock. At the Burradon and Coxlodge Coal Company’s brickworks a brick-making machine, 60-horse power, 500 revolutions per minute, 480 volts, driven on the D.C. system, has been installed, and at the same colliery com- pany’s Burradon pit a new electric winder, of an average of 176-horse power and a capacity of 2,650 volts, has been completed. At the same pit two new electric sinking pumps, each having a capacity of 60,000 gallons per hour, have been completed, and two compressor plants, each of 100-horse power, of the Alley and McLellan type, have been erected for the same company’s Westscade pit and Burradon pit, and at the last-mentioned place an electric fan of the Capell type has also recently been installed. GOVERHSaEHT PUBLICATIONS. Any of the following publications may be obtained on application to this office at the price named post free. Weights and Measures : Report for 1912, 7|d. Railways Bill: Lords’ Amendments, Id. Trade Unions : Lord’s Amendments, Id. I Statistical Abstract for the British Empire, 1897 to 1911 I [Cd. 6622], Is. 7d. Factory and Workshop : Cases of Industrial Poisoning I for 1912 [Cd. 6646], IJd. COAL MINES : Safety Lamps Order [No. 69], 2|d. National Health Insurance : Subsidiary Employments Order No. 1 [No. 193], l|d. PUBLICATIONS RECEIVED. Electrical Trades Directory and Handbook, 1913. 31st edition. London: Electrician Printing and Publishing Company Limited. Price, 15s. “ The Journal of the South African Institution of Engineers ” (vol. 11, No. 7), February, price 2s.; “Revue :Universelle des Mines de la Metallurgie ” (tome 1, No. 2), February ; “ Bulletin et Comptes Rendus Mensuels de la Societe de 1’Industrie Minerale,” (tome 3, No. 2), February ; “ Bulletin de la Societe d’Encouragement pour 1’Industrie Nationale” (tome 119, No. 1), January ; “ The I.C.S. Student” (vol. 5, No. 3), March, price 2d. NEW PATENTS CONNECTED WITH THE COAL AND IRON TRADES. Applications for Patents. 5279. Safety brakes for mine cages or the like. D. Wilson. 5283. Blasting operations. J. Leighton. 5992. Method for the discovery of minerals. A. Williams. 5320. Boring or excavating apparatus. E. F. Estes. 5340. Method of and means for preventing air-locks in pipes, tubes, and the like. W. Conan. 5342. Coke screens. A. G. Glasgow. 5358. Brushes for cleaning boiler tubes. S. G. Bladh. [5368. Condensing apparatus for vapours of benzine and other solvents. W. Schmidt. 5376. Controlling gear for colliery winding engines and the like. W. Hamilton. 5406. Treatment of peat. H. Keeble. 5407. Switchgear for overhead runways and the like. A. F. Mackay, W. R. Darling, and J. Grindlay. 5415. Removal or prevention of scale such as forms in steam boilers and the like and the application of liquid or semi-liquid agents for this purpose. D. G. Martens. 5416. Process for converting coal and carbonaceous waste materials into briquettes or fuel blocks. J. Wetter. 5417. Rotary pumps and similar rotary machines. R. Klinger. 5429. Locomotive and like boilers. [Addition to 28019/11.] F. H. Trevethick. 5442. Apparatus for washing and separating china clay. W. J. Gee and M. Coulson and Co. Limited. 5446. Internal - combustion percussive machine. L. L. Scott. 5449. Ropeways. C. H. Donald. 5450. Means for measuring the flow of a fluid through a pipe. W. G. Kent. 5452. Process and apparatus for smelting turnings and other cast iron scrap. W. Wagner. 5464. Railway sleepers and means for fastening rails thereto. T. Baughman. 5467. Detectors of combustible gases. A. Philip and L. J. Steele. 5474. Crushing, pulverising and disintegrating machines. H. T. Tovey. 5493. Hammers actuated by air or fluid. W. S. Lang. 5499. Fuses. W. Conan. 5504. Treatment of iron or steel for the prevention of rust. T. W. Coslett. 5519. Apparatus for washing coal and other minerals. [Addition to 22655/12.] P. Habetsand A. France. 5527. Centrifugal fans. S. C. Davidson. 5528. Centrifugal fans. S. C. Davidson. 5537. Electric signalling systems. Sir A. T. Dawson and G. T. Buckham. 5541. Process for the manufacture of a binding medium from waste sulphite lyes. P. G. Muller. 5568. Gas-detecting apparatus for portable electric hand- lamps. G. J. Ralph. 5572. Scotch for the wheels of colliery tubs, boxes, or corves. J. H. Brierley. 5612. Dust collectors for use with rock drills. A. W. Daw and Z. W. Daw. 5613. Valves for pneumatic hammers, pneumatic hammer drills, percussive drills, direct-acting pumps and engines. A. W. Daw and Z. W. Daw. 5619. Journal bearings. Hon. Sir C. A. Parsons. 5651. Miners’ cartridge safety box. A. Kornowski. 5663. Safety helmet. W. T. Warren. 5691. Fastening or securing means for wagon and like sheets or coverings. J. Jackson and R. Jackson. 5700. Apparatus for charging and levelling the charge in coke-ovens and for other purposes. J. J. Allen. 5725. Apparatus for making moulds for pig iron. H. Aumund. 5760. Appliances or a combination of appliances applicable to machinery for the improved disintegrating, screening, and blending of artificial manures, minerals, clays, chemicals, and various articles of manufacture. G. M. Tyler. 5790. Wagon and like couplings. R. Smellie. 5800. Explosives. Nobel’s Explosives Company Limited, Sir F. L. Nathan, W. Rintoul, and J. Thorburn. 5810. Manufacture of briquettes. A. G. Bloxam. 5813. Manufacture of iron and steel under direct processes. W. S. Simpson and H. Oviatt. 5823. Diving apparatus. C. Petit. Complete Specifications Accepted. To be published on March 27. 1912. 2407. Explosives. Fairweather. 5039. Apparatus for automatically analysing a gas, or gaseous mixture, volumetrically and recording the same. Woodroffe and Boultbee. 5170. Portable electric battery lamps. Joel. 5199. Jigs for washing coal, ores, and other materials. Munby. 5343. Apparatus for distilling wood, peat, and other substances. Tattersail and Archbold. 5423. Pit and shaft sinking. Walker and Liddell. 5613. Safety appliances for conveyors. Ward and Lash. 5827. “ Either-side ” brake mechanism for railway wagons and the like. Adams and Bythway. 5883. Apparatus for use in the coaling of ships or like operations. Robertson. 5936. Steam generators. Bone and McCourt. 5954. Process for avoiding shrinkage cavity or pipe in ingots. Hoyle and Brearley. 6114. Twin bricks and the manufacture thereof. Dorns. >,7321. Turbines, turbine pumps, or turbine compressors. Gill. 7570. Apparatus for loading and trimming vessels. Boult. 8863. Apparatus for compressing air or other gas. Stokes. 10206 Pulverising mills. Allison. 13373. Explosives. Adde. 17074. Grinding mills. Bausman. 17313. Axle guards or horn plates for railway rolling stock and the like. Craddock. 18736. Manufacture of fuel briquettes, ovoids and the like from waste products. Furse. 20835. Turbines. Bergmann Elektricitats-Werke Akt.-Ges. 21215. Movable sleeve devices to facilitate the inspection of wires in electric cables. Williams. 25860. Kiln. Cole. 26128. Gas producers. Crossley and Fielden. 28441. Metallurgical furnaces. Greenawalt. 29696. Explosive and method of manufacturing the same. Raschig. 1913. 1569. Coke ovens and the like. Hohman. Complete Specifications open to Public Inspection before Acceptance. 1913. 4486. Process for the distillation of fuels. Timm. 4687. Process and apparatus for manufacturing ammonia salts from ammoniacal substances. La Suburbaine (Soc. Anon.). 4843. Gas pressure regulators. Apparate-Vertriebs Ges. 4909. Manufacture of artificial fuel. Blumberg. Hull Contract Case.—In the Nisi Prius Court, at the West Riding Assizes, Mr. Justice Rowlatt heard a case in which Messrs. Major and Co. Limited, tar distillers and manufacturers, of Hull and Wolverhampton, sought damages for breach of contract from Messrs. John Watt and Co. Limited, coal merchants, of Hull. The allegation of the plaintiffs was that in October 1911 the defendants contracted to supply them with 7,800 tons of Mansfield rough nutty slack coal for monthly delivery in quantities of 650 tons at 7s. 9d. per ton. Only 257 tons were delivered in November and 275 in December. In November the defendants delivered a quantity of Bentley slack which was worth 6d. per ton less than Mansfield slack and a quantity of Kiveton slack, valued at Is. 6d. per ton less. Some Kiveton slack of very bad quality was delivered in December. The plaintiffs alleged damage to their business in conse- quence of having to use inferior coal, and that they had to buy coal at an advanced price. His lordship said there was a tacit arrangement that the Bentley and Kiveton slack should be taken and not rejected, and he could not find that the plaintiffs had made good their claim to these consequen- tial damages. He had come to the conclusion, however, that the “ cancellation clause ” could not be applied to the November account. The defendants failed to deliver the Mansfield slack, and knew they were breaking their contract. He gave judgment for the plaintiffs for £920 6s., with costs. THE “PROTO (FLPATENTAS,S) RESCUE APPARATUS ---------------------------------- IS THE -- 9 SAFEST APPARATUS NO INJECTOR EMPLOYED. ALWAYS UNDER POSITIVE PRESSURE, therefore no danger of drawing poisonous air into breathing circuit. All fatalities that have occurred have been with the Injector type. The “PROTO” has saved lives and an immense amount of property. It has never cost a life. Our bulletin of actual work done, sent free on request, will convince you as to its efficiency and reliability. Sole Makers: SIEBE, CORMAN & CO. LTD“ Neptune ” Works, And 187, Westminster Bridge Road. London, S.E. Telegrams, “ SIEBE, LONDON/" Telephone No. 251 Hop. R. HEBER RADFORD, SON, & SQUIRE, Engineering, Iron and Steel Works ------------------ VALUERS, ---------------- Consulting Engineers, Referees, Arbitrators & Patent Agents. ----- ESTABLISHED OVER 40 YEARS. --- (Senior partner, R. Heber Radford, Mem. Inst. Mechanical Engineers, Mem. Inst. Naval Architects, Mem. Iron and Steel Institute, Fellow Chartered Institute of Patent Agents.) 15, St. James Ro-w, SHeffleld. Telegrams—“ Radford, Sheffield.” Telephone—425. SHAFT AND SCAFFOLD WORKERS’ SAFETY BELTS. CACE SAFETY, LANDINC, and HEADGEAR CATCHES. DRE AONOUGMT FILES. A. HANLEY, 21, Alpha Rd., Bristol. Great Mining Machinery Exhibition, ROYAL AGRICULTURAL HALL, LONDON, Thursday, JI AY 29, to Saturday, JUNE 7. Will be opened by The Rt. Hon. the EARL OF ELLESMERE. Previous Exhibitions under same management were held at the Royal Agricultural Hall, 1903- 1904, 1906, and at Olympia in 1908. H. GREVILLE MONTGOMERY, Offices : 43, Essex Street, London. HUGH C. MONTGOMERY, Directors. 27, Brasenose St., Manchester.