1322 THE COLLIERY GUARDIAN. June 12, 1914. 16760 (1913). Self Unloading Tipping Wagon. J. Horn, of 53, Meineckestrasse, Charlottenburg, Germany.—Relates to side tipping wagons of the kind in which the body tips about a horizontal axis in or near the vertical plane con- taining the longitudinal centre line of the vehicle. The invention essentially consists in the provision of transversely movable pivotal supports for the wagon body, which can be adjusted on the one or the other side of the centre of gravity AW F AW ________zr of the wagon body, so that in the one position of the support the body is overbalanced and leans against a fixed support, and in the other position of the same is tipped over towards the discharging side. Fig 1 is a side elevation of the wagon, fig. 2 an end view, fig. 3 a plan of the frame of the wagon without the box, and figs. 4 and 5 illustrate details. (Four claims.) 17620 (1913). Improvements in or relating to Apparatus for Lubricating the Axles of Colliery Tubs and similar Vehicles. Joseph Cook, Sons and Company Limited, of Washington Iron Works, Washington Station, and C. F. Cusson, of 25, Station-road, Washington, both in the county of Durham.—Relates to apparatus of the kind comprising a resiliently mounted contact bar or the like lying in the path of the axles of the tubs, and adapted to be depressed thereby as they pass, a lubricant reservoir, and a pump carried by the contact bar and extending into the reservoir, said pump communicating by suitable passages with the upper surface of the contact bar and being adapted, when said contact bar is depressed by the axles of a passing tub, to deliver lubricant to the surface of the contact bar from which it is picked up by the axles of the tub. The object is to provide, in lubri- & J* eating apparatus of the kind referred to, an improved construction of pump whereby a copious supply of lubricant will be delivered to the upper surface of the contact bar, and the axles efficiently lubricated. According to the invention, instead of employing a single barrel pump, a pump is employed comprising a pair of plungers extending into barrels provided with oil admission holes and arranged in the lubri- cant reservoir, a pipe connecting the lower ends of the said barrels, and a delivery pipe, provided with a non-return valve, extending from said connecting pipe to a port or passage leading to the upper surface of the contact bar. Fig. 1 is a vertical section of one construction of lubricating apparatus in accordance therewith; and fig. 2 is a plan thereof. (Two claims.) 24791 (1913). Improved Appliance for Supporting and Liberating Pit Props and Chocks used in Coal and other Mines. J. Green, of Belle Green-lane, Ince, Wigan, Lancashire.—Consists in an appliance for this purpose con- structed with loose sides, open top and bottom, and held Fig.l. B Fig.3. B together by strips of metal affixed to opposite sides, clamped by bolts extending along the other two sides. Fig. 1 is a side elevation with the bolts C removed, fig. 2 an end elevation, fig. 3 is a transverse section, and fig. 4 a plan. The bolts heads are provided with holes c to receive the end of a pick axe or bar to prevent rotation while the nut c1 is being screwed or unscrewed. The appliance may be made any size, say about 25 in. by 25 in. inside and about 12 in. high, to hold a square chock built up of pieces 2 ft. long. In operation the appliance is filled with loose granular material, earth or the like, pressed tightly together on the top of which the prop or chock rests, when it is desired to release the latter it is only necessary to undo the bolts when the sides of the appliance fall apart. Two or more of the appliances may be used one on top of the other, and when filled the chocks built so as to fit and not to catch the edge, so that the whole weight is carried by the compressed earth or granular material which forms a vertical column, and practical no strain occurs on the sides. (Two claims.) 25064 (1913). Improvements in Pumping Engines. H. Davey, of Conaways, Ewell, Surrey.—Relates to pumps in which the power is obtained by internal combustion in an engine cylinder, and has for its object to construct a non- rotative internal combustion pumping engine of high efficiency. It is well known that in the Cornish pumping engine and in the inventor’s known differential pumping engine, the inertia of the moving mass enables the steam to be used expansively on the piston, and according to the present invention the pressure caused by internal combustion in an engine cylinder is similarly used. The invention consists in a pumping engine, comprising a beam having suitable weights at its ends, and connected by suitable con- necting rods at a point between the fulcrum and the end of the beam with the pump cylinder, while between this point and the end of the beam the latter is suitably connected to I&4 the engine cylinders. The invention further consists in actuating the exhaust valve of the engine cylinder by pressure on a piston in communication with a port in the cylinder and connected to means for operating the exhaust valve, such port being overrun by the main piston towards the end of the explosion stroke. The invention further consists in a device for stopping the engine in the event of the load suddenly falling off, controlled by the pressure on the discharge side of the pump cylinder. Fig. 1 is a vertical section of the pumping engine, figs. 2 and 3 are diagrams illustrating the theory of the engine, fig. 4 is a section through the end of the cylinder, showing one method of operating the exhaust valve, fig. 5 is a section of an improved form of displacer, while fig. 6 is a vertical section of a double acting engine. (Four claims.) 25719 (1913). Improvements in Jig Conveyors. The firm Gebriider Hinselmann, of 50, Markischestrasse, Essen- Ruhr, Germany.—In the working of jig conveyors it is usual to obtain horizontal or even an ascending conveyance by lifting the conveyor to a considerable extent during one working movement, so that the conveyor is able automatically to fall back at the second movement. With the known pendulum suspension, this is effected by a one sided rise from the central position,, whilst with conveyors carried by rollers wedge shaped or curved ascending rolling tracks are employed. Non-circular rollers have also been proposed, having upper and lower bearing surfaces in the form of segments of circles struck from different centres, the rollers having an outline common in a certain class of cams, as shown in fig. 1 of the annexed drawings. The last men- tioned devices in particular are defective inasmuch as the possibility of raising the conveyor, by virtue of the eccentricity, cannot be fully utilised. For fully utilising the eccentricity, to produce a lift, a turning movement through 180 degs. must, of course, be employed, but as shown in fig. 1 the roller only allows of a rocking movement through 90 degs., and then abuts with a flat surface against the conveyor with further movement. Another great drawback is that with excessive eccentricity the roller is liable to slip. If Q is the load on the rolling body and t the eccentricity, then according to fig. 1, a turning moment Q t is exerted on the roller body which can only be opposed by the friction on the upper and lower bearing surfaces of the roller. The moment of friction is 2 Q m where h is the distance between the points of contact, and /x the coefficient of friction. The limiting condition is thus :—Q t = Quh. Assuming p. to be approximately A, then t = A h, so that the case according to fig. 1 represents approximately the limit. This limitation is obviated in the invention by arranging the roller surfaces of the roller or supporting body, which are eccentric to each other at opposite sides of a plane intersecting their axes, so that there is no mutual interference, the said rolling surfaces working on runways, on the conveyor and ground respec- tively, which are not directly opposite each other. As the rollers are always used in pairs, and for practical reasons the pair is connected by a common axle to form an integral whole, this disposition of the supporting pressures in two different planes avoids the tipping moment which would otherwise obtain. The swinging movement of the rolling body may exceed 90 degs., without the upper and lower rolling surfaces interfering with one another. This arrange- ment and construction of the rollers is also particularly important with respect to the machining, inasmuch as the curvature of smaller radius can be readily produced by turn- ing on the lathe, which is impossible with the roller shown in fig. 1. One form of construction according to the invention is shown in fig. 2 in longitudinal section. (Four claims.) 27648 (1913). Improvements relating to Compositions for Aiding the Combustion of Fuel. A. Morin, L. Hamon, and E. Hess, all of No. 207, St. James-street, Montreal, Quebec, Canada.—According to the invention there is made for the purpose in question an enriching solution comprising water, sodium chlorate or perchlorate and sodium perman- ganate. This solution is sprayed over the fuel either before the latter is charged into the furnace or during its combustion. The atomic weight of sodium being only 23, the unit weight of the mixture used according to the invention supplies a larger volume of oxygen than is the case when the corresponding potassium salts are used. Moreover, the sodium salts are much more soluble in water than potassium salts. The preferred mixture is prepared as follows :— 80 parts, by weight, of chlorate of sodium is dissolved at ordinary temperature in 100 parts, by weight, of water, and 100 parts, by weight, of permanganate of sodium is dissolved at ordinary temperature in 100 parts, by weight, of water. The two solutions are then mixed, the result being that the mixture will contain, by weight, 526 parts of water, 210 parts of chlorate of sodium and 264 parts of permanganate of sodium. When perchlorate of sodium is used this is dissolved in an equal quantity of water, .by weight, and permanganate of sodium is dis- solved in an equal quantity of water, by weight, the result being that the mixture will contain 250 parts, by weight, of perchlorate of sodium, 250 parts by weight of permanganate of sodium and 500 parts, by weight, of water. To secure the best results a vehicle or carrier is provided, the mixture being diluted preferably with 50 times its volume of water, and the quantity supplied per ton of fuel being varied in connection with different fuels. When low grade coal or the like is used, the oxygeniser composed as above described, and diluted with 50 times its volume of water, is sprayed over the fuel, prior to the burning thereof, at the rate .of about 10 gallons for each ton of fuel. In connection with coke the mixture is supplied at the rate of 25 gallons for each ton of fuel, and to secure the most efficient results when spraying cinders or scorias with the solution, it has been found preferable to spray the solution at the rate of 50 gallons for each ton of fuel. (Six claims.) NEW PATENTS CONNECTED WITH THE COAL AND IRON TRADES. Applications for Patents. 13387. Colliery signalling apparatus and the like. P. Critchley and H. Ingram. 13396. Chain structure. E. B. Raper. 13440. Production of rust preventing agents. Mannesmann- rohren-Werke. 13443. Metallic lighting device for miners’ safety lamps. L. Marschall. 13461. Rope grips for colliery tubs and the like. W. C. Watson. 13484. Rock drills. J. M. Holman and J. L. Holman. 13538. Electric welding and fusion deposition of metals. A. P. Strohmenger. 13551. Compound steam engines. R. Wolf Akt.-Ges. 13568. Signalling devices for use in coal mines. F. Smith. 13596. Apparatus for loading coal or the like into vessels or for other like purposes. S. Einstein. 13600. Multistage centrifugal pumps. Geb. Sulzer. 13610. Grabs. Brown, Lenox and Company (London) Limited, and E. C. Ansell. 13615. Rotary engine adapted to be driven by compressed air. F. E. van Slyke. (N. D. Levin, U.S.). 13626. Protection of electrical distributing or current carry- ing systems. F. Coates, H. W. Clothier and A. Reyrolle and Company Limited. 13643. Process for reducing the sulphur contents of metal lurgical coke. R. Fabry. 13662. Injector devices particularly applicable to respiratory apparatus for use in unbreathable atmospheres. J. E. Spickett. 13689. Automatic lubricating devices for compressors. Akt.- Ges der Maschinenfabriken Escher, Wyss et Cie. 13704. Process and apparatus for the production of gas from various fuels such as coal, brown coal, peat and wood. G. Roubzoff. 13708. Rope railways. T. Thunhart. 13710. Recording gauges, indicators, and other measuring instruments. A. L. Dugon. 13719. Method of armouring or mounting soft metal disks with diamond dust or rock section cutting. J. Miles. 13726. Valve apparatus for percussive rock drills, tools, and the like. G. Rayner. 13764. Drill rod couplings. E. J. Lowe. 13771. Apparatus for electro-plating iron and steel plates with other metals. S. O. Cowper-Coles. Complete Specifications Accepted. To be published on June 25. 1913. 12402. Water tube boilers. Wills. 12618. Means for the accumulation and transference of heat. Lymn. 12723. Testing of insulation. Evershed and Vignoles Limited and Evershed. (Continued on page 1324.)