1110 THE COLLIERY GUARDIAN. June 9, 1916. to or above atmospheric. The object of the invention is to provide an improved apparatus wherein a solid may be successfully introduced into the pipe line by gravity. In the drawing, 1 indicates >a suitable source of fluid under pressure, as a centrifugal . compressor, connected with a pipe line 2 through which the solid is con- veyed.* Arranged in the pipe line is a Venturi tube . having a throat 3, an up-stream 4, and a down- section 5. ____ with the throat of the Venturi a suitable hopper h the is If the in Con- section, section stream nected section tube is 6 through which solid to be conveyed fed into the pipe line, it be assumed that .pipe line is 7 in. diameter and that a pressure-of 20 lb. absolute i_ ’in order to overcome the friction of the pipe line and the static head agaiinst which the solid must be discharged, this will mean (assuming a loss of 25 per cent, in the Venturi section) that an initial pressure of about 22 lb. .absolute will be required. For a flow of 2,500 cu. ft. min. in the pipe line a throat diameter of about 3| in. will give a throat pressure of about 15 lb. absolute (atmospheric) which Would allow the ready introduction of- the solid to be conveyed. By increasing the flow to 2,900 cu. ft. min., all pressure and dimensions remaining as above,, a suction of about 51b. below atmosphere may be established in the throat, so that the material can be fed into the system even against gravity. (Four ^claims.) is required 7387 (1915). Improvements in Internal Combustion Engines. BE. Mensforth, of Hawthorn Lea, Langham-road, Bowdon, in Chester.—Relates to internal combustion engines using gas of high calorific value, in particular gas containing a large portion of hydrogen, and is intended to prevent pre- ignition. With this object, exhaust or other inert gases are mixed with the fuel gas supply to the engine, thus reducing the calorific value of the gas supplied to the engine, with the result that the size of the gas'valves is increased, thus render- ing it more easy to govern and adjust said valves. One 43- form of the invention is represented diagrammatically in the drawing, in which 1 is the gas engine and 2, 3, 4, 5 the cylinders. The gas inlet pipe is shown at 6, and the air inlet pipe at 7, -the amount of gas and air admitted to the engine cylinders being controlled by a valve 8 in the usual way. 9 is the exhaust pipe for conveying the products of combustion from the cylinders to the exhaust silencer 10. A portion of the exhaust gases is abstracted from the silencer 10 and passed through cooling pipes 11 and admitted through the pipe 12 into the gas supply pipe 6 the amount of gases so admitted being regulated by a valve 13. (One claim.) 1053'8 (1915). Improvements in Devices for securing Wire Ropes Together. F. A. Bullivant, of 72, Mark Lane, in the City of London; and G. M. Selby, of West Ferry- road, Milwall, London.—Relates to devices for securing wire ropes together, and its object is to overcome the objection which applies to the devices hitherto made on account of the small bearing surface which the inner side of the bend of the staple has upon the rope. An extended piece is provided which affords an additional bearing for the loop, or bend, of the staple on the rope at the part opposite the saddle-piece. The said extended piece may be in one with the staple, or a separate piece, in which case its outer side .should be formed with a groove, or channel, to receive the bend of the staple. To give a still further extended bearing surface upon the rope, at each side two or more such devices may be used side by side, and the additional bearing pieces may be formed on or fixed to the saddle-pieces of the respective devices, so that the surfaces extend sideways from each saddle-piece and receive on, or in a groove formed in, the exterior of the said extension pieces, the bend of the staple of the adjacent device. For instance the device may be duplex, as illustrated in figs. 1 and 2. The device is made up of two saddle- pieces A, A2, each with an extension.a, a2, from one of its sides, the inner side of each extension constituting a con- tinuation of the bearing surface of the respective saddle- pieces A A2, and the other side of each extension being grooved to receive the loop, or bend, of the respective staples (B, B2), whose ends are passed through the opposite saddle-piece and secured and tightened up by the nuts c, c2, screwed on their ends so as to clamp the ropes D E securely together. (Three claims.) NEW PATENTS CONNECTED WITH THE COAL AND IRON TRADES. Applications for Patents. [Note.—Applications arranged alphabetically under the names of the applicants (communicators given in italics). A new number will be given on acceptance, which will replace the application number.] Baxter, C. (7703). Internal combustion engines. Bowen, R. (7900). Means for securing railway rails in chairs. Bradbury and Company (7578). Mechanism for controlling clutches, etc. British Thomson Houston Company (General Electric Com- pany) (7652). Electric motor control systems. British Thomson-Houston Company (General Electric Com- pany) (7790). Piston packings. Burt, L. S. (Retuerto) (7683). Apparatus for detection of leakages in water jackets of blast furnaces. Davies, D., and Deer, G. G. (7614). Miners’ lamps. Davis, J. C. (7805). Casting processes and apparatus. Dawson, C. E. (7655). Internal combustion engines. Day, B. I. (7705). One-way friction clutch. Fleck, R. (7881). Machine for cutting peat. Gaiwley, G. J. (7791). Utilisation of atmospheric air for production of riiotive power. Gibbs, G. J. (7768). Apparatus for water softening. Gilchrist, A. L. N. (7624). Internal combustion engines. Goold, L. W. (Jones) (7883). Elastic fluid engines. Hall, I. (7830). Casting metal, etc. Harris, J. H. (7679). Friction sparking appliance for igniting gas in gas engines. Higgins, T. G. (7885). Draw-bar couplings of railway vehicles, etc. Higgs,, C. W. (7842). Internal combustion engines. Hovland, H. B. (7601, 7661). Apparatus for treating ores, etc. Hugh, P. G. (7842). Internal combustion engines. Imray, O. (Werner) (7717). Internal combustion engines. James, C. (7671). Piston rings. Johnson, F. G. L. (7857). Manufacture of explosives. Johnson, T. (7826). Compression release mechanism for internal combustion engines. Jones, P. J. (7883). Elastic fluid engines. Jung, A. J. (7839). Internal combustion or explosion ’ engines or motors. ' _ Kershaw, P. B. W. (7723). Internal combustion motors. Klyne, C. H. (7850). Internal combustion engines. Leadbetter, T. A. N. (7624). Internal combustion engines. Lees, T. (7578). Mechanism for controlling clutches, etc. McCanlis, G. E. (7703). Internal combustion engines. Miles,- J. O. (7723). Internal combustion motors. Moller, V. (7765). Diaphragm pumps. Pensabene, N. (7708). Dynamo electric machines. Perchlorate Safety Explosives Limited (7857). Manufacture of explosives. Prichard, J. H. (7853). - Means for raising water from depths. Quarmby, F. and F.W. (7875). Means for enabling internal combustion engines to be started. Reavell and Company, and W. Reavell (7667). Air com- - pressors. Ritchie, F. (7616).. Electric signalling apparatus. Roberts, D. (7671). Piston rings. Roughan, T. J. (7690). Furnace bar, Rowe, A. (7861). Spring knocker for signalling to journey engine in underground work. Scammell and Nephew, G. (7842). Internal combustion engines. Smith and Sons, S., and Smith, R. A. (7622). Internal combustion engines. Smith, T. A. (7691). Fastener for driving belt, etc. Stonehouse Works Company, and Tailby, N. (7722). Means for bundling steel, etc., scrap. Tate, W. H. (7624). Internal combustion engines. Taylor, P. B. (7606). Apparatus for branning or cleaning tin-plates, etc. Thiele, R. (7662). Furnaces and kilns. Thoresen, H. C. (7793). Device for automatically changing alternative fuel of internal combustion engines. Truscott, E. F. (7626). Valveless steam or compressed air engine. Tugwood, R. J. (Jeffrey Manufacturing Company) (7846). Portable elevating and sacking machines. Webb, C. R. (7862). Parallel slide stop valve,for steam, gas, or liquids. Werner, L. A. (7717). Internal combustion engines. Whitfield, C. (7759). Gas producer plant. Wilkinson, F. A. (7779). Using paraffin, etc., in internal combustion engines. Complete Specifications Accepted. (To be published on June 22.) 1915. 3888. Rotary fluid pressure motors. Bracker. • 4728. Railway and like signalling. Kerr. 5018. Fuel. Sutcliffe, and Pure Coal Briquettes Limited. 5490. Utilisation of compressed air for motive power pur- poses. Angwin. 6199. Collection of fume, flue dust, and other matter sus- pended in gas. Pearce. 6325. Furnaces. Smallwood. 6353. Hot air and the like motive power plant. Neu. 7762. Thermally controlled valves. Paine. 7860. Rotary internal combustion engines. Broman. 8091. Pumps. Southey. 8127. Apparatus for admitting additional air for rotary motors. Clerget, Blin, et Cie., and Clerget. 8318. Mechanism for operating electrically worked tram- way and railway track points. Murray. 8417. Casing for the stators of dynamo electrical machines. Maschinenfabrik Oerlikon. 8025. Weigh cart. Henry Pooley and Son Limited, and Dobson. 9530. Means for casting metal. Hall. 9855. Vacuum brake apparatus for railway and like vehicles. Gresham. 10380. Lifting motions of steam cranes. Hubbard. 10771. Production of metal castings. Paton and Carbin. 10930. Preventing incrustation in steam boilers. Seabrook; ’ 11473. Alternating current motors. British. Thomson- Houston Company (General Electric Company). 11873. Axle or shaft bearings specially applicable for mining corves and other like vehicles. Eames and Clements'. 12269. Coal-cutting machines. Wood. 15615. Lubricators. Robinson. 1'5744. Dpvice for cleaning shafting. Townley. 18123. Fluid pressure regulating valves. Auld and Graham. 1916. [Note.—The numbers following the applications are those which the application will finally bear.] 176. Gas heated crucible furnaces. South Metropolitan Gas Company, and Chandler, D. 100499 803. Packings for pistons and the like. Bay State Pump Company. / 100023 1482. Method of connecting cylinders of explosion motors in which the outer casing for the water jacket is '■ brazed to the cylinders. . Maffei, G. A. 100505 3658 and 3659. Starting mechanism for internal combustion ' engines. British Westinghouse Electric and Manufacturing Company. 100246, 100197 < 4301. Valves and valve gear for rock drills. Rayner, G. H. T. 100524 6422. Radial flow turbines. Svenska Tufbinfabriks Aktie- bolaget Ljungstrom. ' 100484 Complete Specifications Open to Public Inspection Before Acceptance. 1916. [Note.—The numbers following the applications are those which the application will finally bear.] 2313. Rock drilling engines. Nya Aktiebolaget Atlas. 100529 7444. Engine starting systems'. Kettering, C. F., and Chiryst, W. A. 100541 7601. Apparatus for treating ores and other materials under pressure. Hovland, H. B. 100545 GOVERNMENT PUBLICATIONS. *hi<*Any of the following publications may be obtained on application at this office at the price named post free. Gas Standard of Calorific Power Bill, Id. Statutory Rules and Orders, 1916 : No. 320, Statutory List re Trading with the Enemy, 3Jd. Trading with the Enemy : Order in Council, No. 321, ljd. Foreign Trade Accounts up to May 27, 1916, 5Jd. Customs Form No. 20, Is. per quire. Munitions of War Order, IJd. Circular to Local Tribunals : Appeal Tribunals, l|d. Regulations for Tribunals under the Military Service Acts, , 1916, 2d. Hull Coal Exports.—The official return of the exports of coal from Hull to foreign countries for the week ended May 30 is as follows:—Calais, 842 tons; Copenhagen, 1; Dunkirk, 1,457; Gothenburg, 4,443; Genoa, 1,790; Guernsey, 250; Honfleur, 1,010; Harlingen, 421; Leghorn, 594; Limni, 1,676; Naples, 1,808; Port Vecchio, 4,001; Rotterdam, 922; Rouen, 8,474; West Coast Africa, 1,000—total, 28,689 tons. Corresponding period May 191i5—total, 56,760 tons. These figures do not include bunker coal, shipments for the British Admiralty, nor the^Allies’ Governments. “SHELTON” IRON. “ SHELTON ” STEEL <.—) “GRANVILLE” PIG IRON <=“) STEEL PIT GIRDERS & COLLIERY RAILS a Speciality; also High-class RAR IRON for Couplings, && IRON & STEEL BARS, ANGLES, TEES, CHANNELS, GIRDERS, PLATES & SHEETS, STEEL BILLETS, BLOOMS & SLABS. Enquiries to— -. 1 1111 . THE SHELTON IRON, STEEL & COAL CO. LTD., TtTfXE’ Or 122, Cannon Street, London, E.C. TMofxaphie Address: “ Shelton, Stoke-an-Trent.” Tel. No. 11 and 253. | Telegraphic Address : “ Sheltonian, London.’* Tel. No. 886 Bank. First-class Medals— Paris. 1885; London, 1862. Gold Medals— Paris, 1878 ; Melbourne, 1881. On the Question of “Hot Boxes.” Recently Published. Crown Octavo. THE UPKEEP OF PRIVATE OWNERS’ WAGONS. By E. J. H. L. Illustrated by Original Drawings and Photographs. Price 6d. Post free 7d. THE COLLIERY GUARDIAN CO. LTD., 30 & 31, Furnival St., Holborn, London, E.C.