1006 THE COLLIERY GUARDIAN. May 25, 1917. 119 offset from it receives the taper spigot 120 projecting laterally from the cradle 121. The bracket or lug 119 has a socket on either side of it to allow of the cradle 121 being set on either side of it as may be required, said cradle being secured to it by the socket mounting 120 before-mentioned, and the through bolt 122. A lug 124 projecting downward from the bracket or lug 119 contains journals for the worm spindle 125. This worm, spindle may be turned by a hand crank 126 so as to traverse the worm which is on the spindle 125 around the face of the sector 109, and thereby swing the cradle 121 around the bolt 118 as a centre, and hold it in any required angular position thereon. With this mounting complete universality of adjustment and any variation of the axial direction and the lateral position of the cradle 121 is facilitated, so that the drill may be directed to any position within its reach and traversed along any line or plane within its reach, and at any angle as may be required. (Five claims.) 105489. Improvements in Tipping Wagons. D. Shank- land, 88, Great Clyde-street, Glasgow. — This invention relates to tipping wagons of the type in which the rear wheels are mounted in a carriage movable endwise of the wagon body. Fig. 1 is a part elevation, part vertical sec- tion, showing the wagon when running on the road ; fig. 2 is a like view showing the wagon when tipped. The wagon shown is provided with two pairs of road wheels, of which the front wheels 1 are endwise immovable in rela- tion to the wagon body 2, but the rear wheels are mounted in a carriage 4, movable endwise of the wagon body 2 ; for example, along a guideway provided with anti-friction bearings, such carriage 4 being adapted to assume a posi- tion remote from the front wheels 1 or a position adjacent thereto ; in which last position the rear wheels 3 are con- siderably overhung by the wagon body. The tipping gear employed comprises a screw 14 engaging a nut-forming member 15, and adapted to receive rotary movement from a manually-operated shaft 16 through the intermediary of bevel gears 17. In addition to the draw-bar 12, there is provided a connection such as a chain between the wagon and a point located low down on the tractor, so that the front wheels are prevented from leaving the road. The wagon may also be provided with locking means, as here- tofore, including locking pins 5 engageable in orifices 6 for locking the carriage 4 in either of its extreme positions, and the body of the wagon 2 may be prevented from rising off the rear carriage 4 by means of flanges 13. When it is desired to tip the wagon, the locking devices are dis- engaged, and wedge blocks 7 or the like are disposed back of the rear wheels 3. Then the wagon is run backwardly, while the rear wheels 3 remain at rest until the rear wheels 3 occupy their extreme forward position in relation to the wagon in which they may now be locked. The wedge blocks 7 are desirably spiked, as shown. The brake gear is mounted on the carriage sustaining the rear wheels, and comprises brake blocks 8 carried by a frame 9 movable towards and away from the peripheries of the rear wheels 3 by rotation of a screw 10 engaging a nut slidable in a guide, and serving to operate the brake lever or levers 11. (One claim.) 105528. Improvements in P ercussion Pock Drills and Coal Cutters Operated by Fluid Pressure.—J. Fletcher, Newnes, New South Wales, Australia.—This invention has been devised to.improve drills of the type used for rock' and coal holing, nicking, drilling, or wedging, in respect of plunger control in drills operated by compressed air or steam. The object of the invention is to provide means not only for effecting a change in the length of stroke, of the plunger at the will of the operator, and for adapting the machine to be worked most effectively on high, medium or low pressure air or steam, but also to provide for optional cushioning, and, further, to enable the plunger to be jigged on a short stroke for the purpose of relieving the cutting bit when it is working or jammed in a tight hole or channel. The plunger head is shown in dotted position near the extreme outward end of its stroke in fig. 1. The plunger and drill rod are of usual type, and the plunger may co-act with a rifling device of known type mounted in the back head of the cylinder 20, which is screwed into the tapped base end 21 of the cylinder. The cylinder chamber communicates with the main valve through ports 22 and 23 located near its rear and forward ends respec- tively, the port 23 being set a little backward from the extreme front end of the cylinder, so as to ensure the imprisonment of sufficient air in front of the plunger head to partially cushion the same, and prevent actual mechani- cal contact between the plunger head and the cylinder end, a rubber ring buffer 82 being also fitted for this purpose. The back port 22 merges directly into the aperture 25 on a planed face 27 on the side of the cylinder, on which planed face the valve casing 26 is bolted down. The front end port 23 communicates with the aperture 28 on the face 27, through a cored passage 24. A by-pass 29 connects the cored passage 24 to the cylinder chamber at 30 through a plug cock or valve 31, the stem of which is fitted with a hand lever or other device for turning the valve manually to open or close it as required. The aperture 30 enters the' cylinder at a point rearward of the front end port 23 a distance slightly exceeding the length of the plunger head. A hole 32 is drilled through the solid metal in the cylinder body parallel with the cylinder axis, and this hole is placed in communication with the cylinder through five by-pass holes 33, 34, 35, 36, and 37, located preferably as shown in fig. 1. There may be a greater or less number of these by-pass holes, and they may be located differently from those shown in the drawing, but so as to operate similarly to those shown. The drilled hole 32 forms a seating for the manual control tube 90, which is a neat fit in it, and is rotatable by means of a spanner or hand lever engaged with its square stem end 38. This tube valve 90 has seven holes, 39, 40, 41, 42, 43, 44, and 45, drilled through its wall. The disposition of these seven holes at 90 r/c 4- ©iw to. F/G.6. ru.^ four angular positions is shown in the detail section, fig. 6a. The necessary number and respective positions of the holes in the tube valve 90 depends upon the number and disposi- tion of the by-pass holes 33—37 through the cylinder wall. The inner end of the tube valve 90 is reduced in section externally as shown at 46, and holes 47 are made through the reduced part of it to act as passage-ways from its bore 48 into a passage-way 49, which leads up to the face 27. A channel 50 is cut in the face 27. At either end this channel aligns with holes 52 and 53, which are drilled radially through the wall of the valve chamber 26. If the tube vale 90 is turned to any position in which one or more of the holes 39 to 45 is not in alignment with one or more of the holes 33 to 37 in the cylinder wall, communication will not be established through any of the last-mentioned series of holes to the passage-ways 52 and 53 leading through the wall of the valve chamber, but in any of the four angular positions shown in fig. 6a one or more of the holes 39 to 45 will come into alignment with one or more of the holes 33 to 37, and establish communication through the hole or holes so brought into alignment between the interior of the cylinder and the said passage-ways 52, 53, leading into the valve chamber. In operating the machine, the valve 31 is opened when the drill is working against solid material, in which circumstances it is necessary to strike unyielding blows. ' When, however, soft or irre- gular material is being operated on, through which the drill might at times break through rapidly, the cock 31 is closed, and a cushioning effect is produced as hereinafter described. In operating air or steam cradle drills of the percussive type, it is known that the plunger moves in the cylinder very rapidly, and that where its forward move- ment is not arrested by the contact of the drill against solid rock, the plunger frequently strikes the front end of the cylinder, and liability to mechanical injury to the machine is thus always present, notwithstanding that some air cushioning space is provided, and notwithstanding also that buffer rings of rubber or like compressible substances are fitted to diminish the force of such accidental blows. (Five claims.) MEW PATENTS CONNECTED WITH THE COAL AMD IRON TRADES. Applications for Patents. [Note.—Applications arranged alphabetically under the names of the applicants (communicators in parentheses).' A new number will be given on acceptance, which will replace the application number.] Abbott, W. G. Rotary pump. (7203) Allday, W., and Alldays and Onions Pneumatic Engineer- ing Company. Apparatus or furnaces for gasifying or vaporising liquid fuel. (7084) Allen, B. S. Internal combustion'engines. (7072) Allwright, H. Apparatus for lighting coal fires with gas. (6836) Ashcroft, E. A. Treatment of metal bearing ores or inter- mediate products therefrom, and recovery of metals and by-products. (6980) Babcocks and Wilcox. Rotary tipplers. (7207) Bagley, D. Regenerative coke ovens. (7138) Bain, G. M. Self-acting gate for colliery cages. (6905) Baines, W. H. Telemotor apparatus for hydraulic trans- mission of power. (7134) Baker, F. W. ..Internal combustion engines. (7072) Bowrey, S. E. Apparatus for fractional distillation. (6939) British Thomson-Houston Company (General Electric Company). Electric motor control systems. (6932). British Thomson-Houston Company (General Electric Company). Manufacture of turbine blades. (7022) . British Thomson-Houston Company (General Electric Company). Centrifugal compressors. (7174) British Westinghouse Electric and Manufacturing Com- pany. Electric resistance elements. (7001) Brook, P. S. Electric motor controllers. (7156) Brooke, W. Apparatus for control of dynamo electric machines. (7191) Chillington Tool Company. Gas and air mixing appli- ances. (7145) Clements, G. F. Compressed air, etc., operated hand tools, pumps, etc. (6902) Cochrane, W. Internal combustion engines. (6850) Coles, H. S. Internal combustion rotary motors or tur- bines. (7151) Davies, S. Coating metal plates with tin, terne, etc. (7041) Eastman, S. F. Engine valve mechanism. (6856) Egerton, Sir W. Rotary internal combustion engines. (7135) Etchells, H., and Greaves, H. A. Means for sealing open- ings in roof and walls of electric furnace through which electrodes are introduced. (6993) (Fixen, L. G.). Auxiliary air and steam valve for com- bustion engines. (7006) Fletcher and Company, G. Controlling devices for colliery tubs, etc. (6915) Gilman, F. Compressed air, etc., operated hand tools, pumps, etc. (6902) Grade, W. Apparatus for tipping wagons. (7066, 7067) Grant, J. C. Stop valve for steam, etc., engines. (6829) Hailwood, E. A. Miners’ safety lamp burners. (6825) Hall, G. E. Hydraulic presses. (6988) Hall, I. Furnaces. (6814) Hamblet, J. Admixture for refractory clays. (7220) Harris, V. G. Rotary tipplers. (7207) Heyl, G. E. Combined distillation of coal or shale with by-products of coal tar distillation. (6845) Higgins, W. Metal smelting. (7002) Jenkins, U. S. Cracking heavy oils. (7079) Larsen, E. Engine pistons and cylinders. (7033) Lund, E. K. Internal combustion engines. (7153) Mascart, C. Band conveyor. (6869) Metalloids Limited. Manufacture of iron. (7184) Morrison, D. and H. Steam turbines, etc. (7163) Neate, P. J. Pumps. (7180) Nettleton, L. Gas and air mixing appliances. (7145) O’Connor, T. Cut-off means for spiral pumps. (7198) (0. and B. Company). Engine valve gear. (7255) Perry, F. Manufacture of iron. (7184) Pullin, C. G. Pistons. (7098) Pullin, C. G. Pumps, and method of operating same. Reading, H. C. Means for controlling admission and/or exhaust in internal combustion engines. (6822) Richmond Gas Stove and Meter Company. Steel furnaces. (6821) Short, A. A. Controlling devices for colliery tubs, etc., (6915) Simon-Carves Limited. Apparatus for tinning wagons (7066, 7067) Stuart, F. L. Conveying and loading apparatus. (6887) Taylor, P. B. Coating metal plates with tin, terne, etc. (7041)„ Thompson, J. Steel furnaces. (6821) Thomson, A. Telemotor apparatus for hydraulic trans- mission of power. (7134) ^^^6876) Va^ve arrangements for gas producers. Turner, A. Apparatus for lighting coal fires with gas. (6836) (Tygard Engine Incorporated). Internal combustion engines. (7115) Verity, O. R. Rotary internal combustion engine. (7146) Vogelsang, J. B. Treatment of ores. (7078) .Waern, B. A. de. Reversible internal combustion engines. (7117) Watkins, W. G. Controlling devices for colliery tubs, etc. (6915) Widner, G. H. Method of producing water softening material. (7070) Complete Specifications Accepted. (To be published on June 7.) 1914. 10087. Primosigh. Processes and apparatus for separating ores. 1915. 15833. Viola. Turbine pumps or multistage centrifugal fans. 1916. [Note.—The number following the application is that which the specification will finally bear.] 1995. Conklin, B. Rotarv engines, pumps, and the like. (106103) ' 2116. Baumann, K. Feed water heaters. (106104) 3502. Baumann, K., and Scanes, A. E. L. Condensing steam turbine installations. (106106) 6467. Howard, J. W. Dynamo electric machines. (106118) 6504. Taylor, P. B. Coating of metal plates with tin, terne, or other metal or alloy. (106120) 6534. Whitfield, C. Process and apparatus for carbonis- ing peat and other materials, and simultaneously obtaining distillates therefrom. (106121) 6692. McNamara, A. Rotary drilling or boring appar- atus. (106133) 6712. Hinsen, W. Elevated rope railways. (106136) 7241. Cotterill Limited, F. W., West, G. R., and Spencer. J. Means for heating the air supply to liquid fuel furnaces. (106151) 7244. Stobie, V., and Davenport, S. Electric furnace electrodes. (106152) 7881. Fleck, R. Machine or implement for cutting peat. (106162) 8329. Mitchell, W. M. Tip wagons. (106168) 10433. Kuehnrich, P. R. Steel. (106187) 10630. Glover, S., West, J., and Hargreaves, J. Destruc- tive distillation of carbonaceous materials. (106] 89) 10926. Wallis, S., Cudlip, J. S., Parr, A., and Cudlip, J. B. Production of cast iron. (106196) 11704. Fulton, T. Device for holding a miner’s lamp in position on his cap. (106204) 12178. Davies, E. A. Cappels for winding or hoisting ropes and the like. (106207) 14977. Lewis, L. H. Apparatus for teaching mine gas testing. (106225) 18305. Martin, T. H. Conveyors. (106239) 18602. Greenawalt, J. E. Charge cars for ore sintering pans. (106241) * 1917. 933 and 942. Bergman, L. H. Pulverised fuel burners. (106248, 106249) 4261. Cotterill Limited, F. W., West, G. R., and Spencer, J. Liquid fuel burners. (106259) Complete Specifications Open to Public Inspection Before Acceptance. [Note.—The number following the application is that which the specification will finally bear.] 1916. 13139. Hughes. H. R. Forming and enlarging boreholes. (106264) 13884. Aktiebolaget Ingeniorsfirma F. Egnell. Gas analy- sing apparatus. (106265) 1917. 6444. D-ragerwerL H. and B. Drager. Inhaling device? (106278) 6607. Temmer, A. U-shaped superheater elements. (106280) 6620. Weihl, A. Waste heat boilers and superheaters. (106281)