438 THE COLLIERY GUARDIAN. August 21. 1914. drical casing 1 being provided and adapted to slide longi- tudinally thereon, the construction and arrangement being such that in one extreme position of the outer cylinder or sleeve 10 the said hole 7 in the lamp chamber 5 is effectively closed, and the said hole 8 in the generator chamber 6 uncovered, or the generator handle itself uncovered, so that the generator may be operated, but that in any other posi- tion of the outer cylinder or sleeve 10 the said hole 8 in the generator chamber 6, or the generator handle, is closed or covered by the said outer cylinder or sleeve 10, and opera- tion of the generator 9 is thus prevented. The cylindrical casing is arranged vertically as shown, the upper portion thereof forming the lamp chamber, the lower portion the generator chamber. The generator may be a magneto apparatus. Anti-explosion passages, governed by suitable non-retum valves, may be provided if desired, said passages and valves being such that should an excess of pressure obtain in the lamp chamber the valves will open and permit the pressure to escape through the said passage. In a suit- able position on the apparatus there may be provided a brush over and in contact with which the bottom of the lamp may be passed to remove coal dust or the like there- from before the lamp is placed in the apparatus, and such brush is preferably a wire brush 19, detachably secured to the upper end or top of the apparatus. If the above- described brush 19 be provided, and its base plate 20 cover the recess 15 in the top plate 2 of the lamp chamber, a series of radial passages 21 are drilled in said plate to connect said recess 15 with the atmosphere. The dimen- sions and position of the hole 7 in the lamp chamber 5, and the dimensions of the outer cylinder or sleeve, or of the imperforate part thereof, are such that with the latter in position closing the said hole 7, the metal of the cylinder or sleeve 10 overlaps the metal surrounding said hole 7 in the inner cylinder 1 to an extent sufficient to effectively prevent a spark or flame from the interior of the lamp chamber passing outside the apparatus, and the engaging faces of the inner and outer cylinders may be oiled or greased to render the “ joint ” more gas tight. (Thirteen claims.) 17877 (1913). Improvements in Treating Illuminating and Heating Gases for Purifying them and Obtaining useful Products therefrom. The Firm “ Athion ” Gesellschaft m.m.H., of Mannheim-Waldhof, Germany.—Has for its object to provide a process of purifying ordinary illumi- nating gas obtained by the dry distillation of coal, by which process the carbonic acid gas is practically completely removed from such gases and utilised for useful purposes. According to the invention the practically complete removal of carbonic acid from the illuminating gas is first effected by bringing the gas, which has been freed from ammonia and hydrogen sulphide, into intimate contact with a solu- tion of alkali carbonate (for instance, potassium carbonate lye), in any suitable and efficient absorption apparatus at not too high a temperature. The carbonic acid is thus absorbed from the gas and bicarbonate of the alkali is formed. The carbonic acid absorbed is then expelled from the alkali carbonate lye by heating the lye in any suitable apparatus, while the remaining lye can be used again for the absorption of carbonic acid from further quantities of gas. The carbonic acid obtained in this way can be used for any purpose required, for example, it may be liquefied, after previous purification, for use as liquid car- bonic acid, or it can be supplied, in an unpurified state, to retorts, or gas generators, for the purpose of producing carbon monoxide. (One claim.) 19072 (1913). Improvements in and relating to Portable Closets or Commodes for use in Mines and the like. C. W. Roberts and D. W. Cooper, trading as The Wollescote Galvanizing Company, of Brierley Hill.—Relates to portable commodes of the type comprising a receptacle having a fixed or removable flange around the upper edge to form a seat for the user. According to the invention there is provided, in connection with such a commode, a stand comprised of or involving a ring adapted to embrace or encircle the receptacle, said ring being adapted to bear against or be disposed upon the receptacle. Advantageously the said ring is separable from the receptacle and adapted to occupy a position below an external enlargement disposed at or near the upper edge of the receptacle, in which case the said ring is secured to legs which extend downwardly beyond the bottom of the commode and rest upon the ground, con- veniently in tripod formation, the legs being advantageously connected together at a level suitably below that of the ring, by connecting members, which with the ring and legs form a rigid stand capable of satisfactorily supporting the receptacle while in use. The accompanying drawing shows two forms. (Three claims.) 23387 (1913). Improvements in and connected with Drawbar Cradles for Wagons. P. A. Hyde, of Clutha Works, McLellan-street, Glasgow, Scotland.—Relates to improvements in and connected with drawbar cradles for wagons, and has for its object to construct these whereby they will have a much longer life than the existing types ana owing to the principle of their construction, they will be much lighter than those hitherto in use. According to the invention, the drawbar cradle is constructed of two stamped or cast steel ends and two steel straight side bars, and in such a manner as to form a locking arrangement situated in the stamped ends and sides. The cradle with its locking device is designed to suit the direct and natural stresses to which such cradles are subjected, and the possibility of complicated stresses is thereby eliminated. The four pieces forming the cradles are simply connected together by rivets or such like. The sides can be of the ordinary quality of steel or of high tensile steel, and when the latter is adopted the weight can be still further reduced. The ends are so arranged that efficient steel castings can be produced and used in place of the drop forgings as occasion requires. The cradles can be made with parallel or tapered sides as may be found most convenient. Fig. 1 is a side elevation of a drawbar cradle for wagons having slightly tapered sides and made in accordance with and embodying the invention; fig. 2 is a front view of the rear or spring end of the cradle, showing the side bars in section; fig. 3 is a similar view of the front or draw end of the cradle, also showing the side bars in section, which as illus- trated are at right angles to the position shown in the last named figure; fig. 4 is a perspective view of the end J'-pTTl— c' c ^7 illustrated in fig. 2, showing one of the side bars detached from the end in order to indicate its formation as well as that portion of the end constituting the seat for detached end. (Three claims.) 25204 (1913). Improvements in or relating to Driving Mechanism for Well Boring and like Appliances. J. Wells, of Cross Keys House, 56, Moorgate-street, London.—Relates to improvements in driving mechanism of that type which is used for well boring and like appliances, and which com- prises a rotary driving head adapted to drive a rotary tool carrier, a worm wheel rigidly connected to the said head, and a driving worm meshing with the worm wheel. It is an object of the invention to simplify the design of and reduce the number of parts in such driving mechanism in order to cheapen the cost of manufacture and improve the reliability during working. According therefore to the pre- sent invention there is provided driving mechanism of the type specified in which the worm wheel is integral with the driving head, and in which the said head is mounted for rotation on and surrounded by a base plate, which also forms a housing for the worm. Preferably the base plate will be formed as a retainer for oil to lubricate the worm and the worm wheel. According to the invention a cover plate or plates will be attached to the base plate, and will have a free edge located in a circumferential recess in the driving head, so that the gearing is totally enclosed and consequently adequately protected. Fig. 1 is a sectional elevation on the line 1—1 of fig. 3; fig. 2 is a sectional elevation on the line 2—2 in fig. 3; and fig. 3 is a plan of a driving mechanism according to this invention. (Four claims.) MEW PATENTS CONNECTED WITH THE COAL AND IRON TRADES. Applications for Patents. 18481. Cancelling devices for winding signal gear in col- lieries and mines. J. G. Lmneker and J. Adams. 18487. Detonators for blasting cartridge. Nobel’s Explo- sives Company Limited, D. Corrie, and C. M. W. Greib. 18489. Smokeless fuel. D. Williams. 18490. Production of light oils from carbonaceous substances and residues. A. Rollason. 18495. Means for measuring and regulating temperature. J. C. Wilson and H. W. Packard. 18534. Device or apparatus for indicating the weight of goods or the like contained in a lorry, truck, or the like. C. Terry. 18540. Weighing machines. S. Ashworth. 18553. Governing devices for automatically controlling the supply of feed water to steam boilers and for like purposes. A. R. Trist. 18558. Ammonia compounds. T. Rigby and Wet- carbonizing Limited. 18559. By-product recovery from gases. T. Rigby and Wet- carbonizing Limited. 18560. Means for testing electric circuits. H. G. Burford. (F. J. Agabeg, India.) 18575. Lighting box for flexible system in collieries. R. Povey and H. Green. 18576. Process for the distillation of carbonaceous materials and apparatus therefor. H. G. Hills and R. W. Thom. 18578. Ambulance stretchers and the like. P. A. Craven. 18581. Treatment of fuels for obtaining by-products there- from. W. Antrobus. 18582. Safety curbed extension shoots. D. Walker. 18622. Apparatus for feeding ores to stamping batteries and like pulverisers. H. Standen. 18650. Winches, hoists, and the like. A. A. Quick. 18661. Electric signalling systems, particularly for use in mines. Sterling Telephone and Electric Com- pany Limited, and J. W. Dungey. 18674. Apparatus for grinding tramway and like rails. H. W. Laing and S. Butler. 18702. Mine and like signalling apparatus. T. Morton. 18703. Pit props. H. Walker. 18714. Machine for punching holes, slots, notches, and the like in metal plates, as well as in angles, chan- nels, and like sections, and also for cutting angles, channels, and the like. J. Bennie and Sons and R. W. Orr. 18715. Pulverisers. T. Parker. 18716. Mechanical drying apparatus. T. Parker. 18719. Presses for the manufacture of cakes for animal foods or of coal briquettes. F. H. Samulders. Complete Specifications Accepted. (To be published on September 3.) 1913. 11133. Utilisation of peat. Rigby, and Wetcarbonizing Limited. 16144. Feeding means of percussive rock drills, coal cutters, and the like. Simon and Scott. 17887. Vertical coking retorts. Lutz. 17939. Automatically controlling the speed of rolling mills and wire drawing machines. Clark. 18170. Cables for the transmission of electric energy. Cun- liffe and Cunliffe. 18406. Method of and apparatus for obtaining oils and other products from carbonaceous matter or other materials containing hydrocarbons. Wilson. 18542. Combustion of combustible mixtures. McCourt and Bonecourt Surface Combustion Limited. 18643. Local hardening of iron and malleable iron cast- ings. Vickers Limited and Sumpter. 18670. Rotary pumps and motors. Vincent, and Rotoplunge Pump Company. 19884. Multiple chain drives and the like. Johnson. (Link Belt Company.) 19915. Driving means for conveyors, belts, hoisting ropes, and the like. Spence. 21542. Apparatus for estimating the percentage of carbon dioxide in flue gases. Schauli. 23061. Picks, pickaxes, miners’ picks, and all similar tools. Gardiner. 25219. Mechanical telegraphs, particularly adapted for use in connection with coal mines and the like. Meehan and Sons Limited, and Wilkinson. 29624. Process for the production of gas for lighting and heating purposes. Vignon. 1914. 4805. Process for making soil or rocks impervious. Abraham. 6193. Grinding mills. Clark. (Bradley Pulverizer Com- pany.) 7116. Construction of retort for the distillation, carboni- sation, and the like of coal and other carbonaceous materials. Tozer. 12254. Retorts for the distillation of shale. Fell. 12269. Connection with furnace working openings through which hot gases are discharged. Rockwell. 18030. Treatment of peat. Rigby, and Wetcarbonizing Limited. Complete Specifications Open to Public Inspection before Acceptance. 1914. 12049. Process for the extraction of sulphur from the dis- tillation gases of coal. Ciselet and another. 13261. Reheating furnaces. Schmidt. 17587. Rotor wheels for centrifugal machines or the like. Kaplan. 18232. Process of treating coal. Begins. 18404. Coal and rock boring machines. Berner. GOVERNMENT PUBLICATIONS. *#* Any of the following publications may be obtained on application to this office at the price named post fres. Report on Alkali Works, 1913, 9|d. Industrial Directory of United Kingdom for 1914, Is. 6d. Consular and Trade Reports, 1913 : Havre, 4id.; Ceylon, 4|d.; Costa Rica, 2d.; Calais, 2d.; Pakhoi, 2d.; Bermuda, 2d. Factory Forms : No. 72, Register of Children, 7}d.; No. 73, Register of Accidents, 7|d.; No. 79, Register of Lime- washing, 4d. Boiler Explosion Report: Eley Brothers, Edmonton (No. 2305), 2|d. Quarterly Returns of Births, Deaths, and Marriages, No. 262, lOd. Acts : COAL MINES ACT, Id.; Trade Marks, Id.; Patents and Designs, Id.; Patents, Designs, and Trade Marks (Temporary Rules), Id.; Expiring Laws Continu- ance, l|d. Geologist : Board of Education, May 1914, 6}d. PUBLICATIONS RECEIVED. “ Bulletin of the American Institute of Mining Engineers ” (No. 92), August; “The Mining Magazine” (Vol. 11, No. 2), August, price Is.; “ The Journal of the Chemical, Metallurgical, and Mining Society of South Africa ” (Vol. 14, No. 12), June, price 3s.; “ The Journal of the Royal Society of Arts ” (Vol. 62, No. 3219), July 31; “ Trans- actions of the Mining Institute of Scotland ” (Vol. 36, Part 4); “ The Journal of the Royal Statistical Society ” (Vol. 77, Part 8), July, price 2s. 6a. Hull Coal Exports.—The exports of coal from Hull for the week ended Tuesday, August 11, were as follow :— Antwerp, 449 tons; Amsterdam, 121; Bombay, 280; Bremen, 438; Christiania, 736; Copenhagen, 242; Cron- stadt, 4,925; Drontheim, 155; Grenada, 305; Guernsey, 722; Ghent, 1,067; Harlingen, 1,326; Hamburg, 3,814; Kiel, 1,810; Malmo, 504; Monte Video, 5,866; Rotterdam, 3,716; Stockholm, 298; St. Petersburg, 5,899; Rouen, 1,467; Riga, 1,660; and Trelleborg, 1,438—a total of 37,238 tons. For the corresponding period of last year the total was 89,405 tons.