1142 THE COLLIERY GUARDIAN. June 15, 1917. an pivotally supported indirectly on portion s, which is substantially section, and forming a corresponding upon bearer bars adjustable along a path, such that the ash receiving face of the dumper bar may be moved between positions substantially above and below the upper grate level, and will form a practically airtight seal therewith in all positions, while a second practically airtight seal is formed by the aforesaid supporting bodies or by movable members other than the dumper bars engaging with a stationary member such as a fixed plate or a body of water, or by members engaging with the rear sides of the dumper bars or the supporting bodies thereof. The invention further consists in improvements in the construction and arrangement of the various parts, so that the renewal of parts can be readily effected, and the possibility of jamming during working or of the dumper bars being pushed back is avoided. In the accompanying drawings, figs. 1 and 2 represent elevation and plan respectively of a grate constructed according to this invention, a represents the rear end of a chain grate, the rear axle of which is generally made adjustable in a longitudinal direction to accommodate for changes in the length of the grate due to expansion wear of the link holes and link rods or other causes. These links generally form a series of flats or chords as they pass over the guide wheels at the ends of the grate. The dumper bars b bear against the rear end of the grate, and are adjustable bearer bar c through a plate or body por- tion d, which may be continuous across the width of the grate, but which is preferably made in a number of sec- tions. The pivotal mounting of the dumper bars is such that they have only a limited movement away from the grate, so as to prevent them from being thrown off their supports or remaining fixed in a raised posi- tion should a large piece of clinker pass underneath the nose of the . bar. This is accom- plished by provid- ing the bearer bar or supporting mem- ber with an up- wardly projecting V-shaped in cross V-shaped groove bearing portion t in the lower portion of the dumper bar. The sides of the V-shaped groove embrace a slightly larger angle than sides of the bearer bar, so that the dumper bar may have a certain movement. As shown, both the bearer bar and the groove in the dumper bar may have flattened engaging portions. In some cases a fixed stop may be provided to prevent the dumper bars from being moved too far from the grate. The plate d, whether made continuous or of a number of sections, is also pivotally suspended from the bearer bar c, and the centre of support of bar b is so arranged that the lower edge of the plate d is held by gravity, no matter what the position of the bar c is, against a plate e secured to or forming the bottom or a side of the ash pit, so as to make a continuous and practically airtight seal therewith. The door y through which the clinker and ash are with- drawn may bear against the lower side of the plate e, as shown in the drawing. The dumper bars b make a second substantially airtight seal with the end of the grate. The bearer bar c is adjustable along the quadrant path x-—y, which is substantially concentric with the rear axle of the grate, so as to arrange that the noses of the dumper bars bear against the portion of the grate most suitable for the type of fuel being consumed. (Seven claims.) 105989. Improvements in the Drilling of Oil, Water, and other Wells. J. K. Porter and H. F. Morris, both of Chuuk, Upper Burma, India.—In the figure, a indicates the shoe or casing which is adapted to be screwed.to the lower end of the tube which forms the permanent liner of the borehole, b indicates the nozzle through which the jet of water is forced, and to which, the water is conveyed through the said liner, and c indicates the enlargement at the lower end of the shoe. The said shoe is made very . much heavier than the liner, in order to withstand the strains to which it is subjected in forcing it through the formation being drilled, and in practice it is usually made several feet in length, d, d are the slots or notches formed in the shoe, such notches, of which eight are shown, extend- ing above the level of the part of the shoe of enlarged diameter in order to allow of the passage of the water and the debris, resulting from the action of the water jet, to the outside of the shoe, whence such water and debris escape around the outside of the shoe, and of the liner to the top of the bore- hole. The lower part of the shoe, for a distance of, say, from 6 to 7 in., is made of considerably greater thickness than the portion of the shoe above it, and is then gradually tapered or reduced in thickness for a further distance of, say, 18 in., as indicated at e, this tapering portion of the shoe forming a seat for the jet nozzle b within the shoe. The jet nozzle is, as shown, contracted at the lower end to form a central jet. It is to be understood, however, that the nozzle may be formed to produce a jet of any other desired form, or it may be formed to produce a series of smaller jets arranged, say, in a circle ; or may be provided with a longitu- dinal slit, or otherwise constructed according to the style or shape of jet which may be found necessary or most suitable for the particular work in hand. In all cases the said nozzle, preferably, extends below the bottom of the shoe, so that the water action will readily cut away the formation beneath the lower end of the said shoe, and allow it to drop or be forced down as the drill- ing proceeds. The nozzle is extended above the taper seat portion e, and adapted for the engagement with it of a Ashing tool or casing spear, the use of which is well known in the drilling industry, for the purpose of lowering the nozzle into position or removing it for examination, and n "^rf-d this extended portion of the nozzle is made of less diameter than the tapered portion of the said nozzle, to prevent it from binding unnecessarily in the casing when manipulating it. (Three claims.) HEW FATBITS CO1IECTED WITH THE COAL AND 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.] Allen, P. T. Coke ovens. (8269) Atkinson, J. S. Machinery for stripping ingots. (8087) Ayers, P. C. Apparatus for promoting circulation of water in Lancashire, etc., multiple flue boilers. (8220) Ayers, P. C. Means for promoting circulation of fluids in steam generators. (8221) Bagley, D. Regenerative coke ovens. (8159) Balfour, J. W. B. Burners for liquid fuel. (8270) Baumann, K. Steam turbines. (8151) Boulton, P. R. Valves for pump engines, etc. (8178) Breeden, C. L. Electric dynamos. (7986) British Thomson-Houston Company (General Electric Com- pany). Centrifugal compressors. (8193) Cockram, T. R. J. Apparatus for casting ingot moulds. (8283) Colonnetti, G., and Pozzo, A. Testing iron. (8225, 8234-) Colonnetti, G., and Pozzo, A. Apparatus for testing iron. (8233) Connolly, A. B. Double holdfast for joining pit props. (7974) Craven, E. G. Apparatus for crimping or creasing neck of detonators for blasting, etc. (8243) Davey, H. Method of operating steam engines and steam turbines. (8041) Dennett, W. S. Power producing motors. (8144) Duffek, A. Apparatus for production of compressed air in intermittent blasts. (8049) Eldridge, H. Process of making metallic alloys. (8000) Etchells, LI., and Greaves, H. A. Manufacture of steel. (8175) Etchells, H., and Greaves, H. A. Electric furnace regu- lators. (8176) Evans, W. T. Power transmitters. (7977) Falcke, E. Manufacture of Are lighters. (7989) Fleuss, H. A. Pumps for compressing or exhausting air and gases. (8060) George, J. W. Rotary internal combustion engines. (8063) Gillespie, R. F. Flexible couplings for connection shafts. (8137) Hoffmann, R. E. Centrifugal pumps, etc. (8242) Howard, H. J. Internal combustion engines. (8235) Josling, H. W. E. Apparatus for promoting circulation of water in Lancashire, etc., multiple flue boilers. (8220) Josling, H. W. E. Means for promoting circulation of fluids in steam generators. (8221) Lucas, H.' Electric dynamos. (7986) Martin, A. F. Producing oils from sharp, middle, creosote, etc., oils. (8139) Pears, E. R. Heated compressed air turbine engine. (8074) Perfecta Boiler Circulator Limited. Apparatus for pro- moting circulation of water in Lancashire, etc., multiple flue boilers. (8220) Perfecta Boiler Circulator Limited. Means for promoting circulation of fluids in steam generators. (8221) Porteous, H. B. Coke ovens. (8269) Richards, E. J. W. Furnaces or kilns for calcining lime- stone, fireclay, etc. (8126) Robottom, T. S. Safety mechanism for pit cages and hoists. (8237) Rowledge, A. J. Internal combustion engines. (8196) Shaw, A. Firebars for boilers. (8104) Stein and Atkinson. Machinery for stripping ingots. (8087) Steurs, J. B. Vaporising burners for heavy oils for use in oil furnaces. (8051) Swanson, M. R. Double holdfast for joining pit props. (7974) Svlbe and Pondorf Maschinenbauges. Rotary engines. (7993) Tully, C. B. Separation of volatile products from solid carbonaceous materials. (8201) Turner, W. C. Electric dynamos. (7986) Watson and Company, T. H. Electric furnace regulators. (8176) Wilkins, C. H. Combustion engine. (8169) Complete Specifications Accepted. (To be published on June 28.) [Note.—The number following the application is that which the specification will finally bear.] 1916. 2365. Munday, J. G. R. Method of and means for annealing steel. (106624) 2728. Westinghouse Machine Company. Power develop- ing apparatus. (101530) 3067. Watson and Company, T. H., Greaves, H. A., and Etchells, H. Electric furnaces. (106626) 3670. Taylor, J. W., and Forster, R. P. Loading and , discharging apparatus for coal, ore, or other like materials. (106627) 5512. Prioleau, W. L. St. J. Apparatus for preparing peat and the like for distillation. (106636) 6069. Holroyd, T. H. Internal combustion apparatus for generating power. (106638) 6974. Ball, F. L., and Hiller, H. K. Combined tar dehydration and ammonia distillation plant. (106642) 7542. Drakes Limited, and Drake, J. W. Gravity or hinged bucket conveyors and elevators. (106655) 7606. Taylor, P. B. Apparatus for branning or cleaning tinplates and the like. (106659) 7708. Crompton and Company, and Pensabene, N. Rotary electric transformers. (106667) 7741. Stuebing, W. Lifting trucks. (106670) 7842. Scammell and Nephew, G., Hugh, P. G., and Higgs, C. W. Internal combustion engines. (106682) 8514. Davis, R. H. Self-contained breathing apparatus. (106695) 8740. Ellison, G., and Anderson, J. Protective devices for dynamo electric motors. (106697) 9239. Zulver, C., and Smith,- L. E. Furnaces. (106703, 106704) 9765. Heyl, G. E. Furnaces for steam generators. (106707) 10089. Edmondson. E. E. Rotary valves for engines. (106712)" 10949. Wall, A. W. Internal combustion engines. (106721) 11210. Willans and Robinson, and Kaula, R. J. Jet con- densers and means for withdrawing air there- from. (106725) 11656. Cockburns Limited, Cockburn, D., and MacNicoll, D. Steam valves. (106730) 13074. Lemaire, G. Pumps. (101482) 13829. Damiral, P. J., and Braby and Company, F. Float gauge for indicating the quantity of liquid in a tank or the like. (106753) 14466. Moffat, J. W. Electric furnaces. (106760) 16854. Shill, A. E., Diggle, S., and Scott, G. B. Process and apparatus for the conversion of the waste products of coal and other fuels into an inflam- mable gas for consuming smoke in furnaces. (106775) 17094. Gazeley, W. Pit prop. (106776) 17248. Buchanan, J. Pistons for use in internal combus- tion engines. (106777) 17284. Rimmer, G. Coal-cutting machines. (106779) 1917. 30. Briggs, J. M. Train coaling devices. (106793) 1231. Jackson, W. J. Mellersh- (Ingersoll-Rand Com- pany). Fluid operated percussive tools. (106800) 3631. Cheremisinoff, G. Air compressors. (106807) Complete Specifications Open to Public inspection Before Acceptance. 1917. [Note.—The number following the application is that which the specification will finally bear.] 7738. Akt.-Ges. Brown, Boveri et Cie. Apparatus for regulating steam or gas turbines. (106827) 7740. Lefevre, II. A. Heat engines. (106828) 7756. Svenska Turbinfabriks Aktiebolaget Ljungstrom. Radial flow double turbines. (106830) Application to Avoid or Suspend Patent or Licence. No. and year of patent. Name of grantee. Short title. Name & address of applicant. Date of hearing. 11140/08 Edeleanu Puri f y ing c rude petroleum or petroleum products or distilates. The Anglo- PersianOilCo. Ltd.. Gresham House, Old Broad - street, E.C. June 21. Any person interested who desires to he heard in opposition to the above-mentioned application must give notice in writing addressed to the Comptroller-General of the Patent Office, 25, Southampton- buildings, Lon on, W.C. 2, before the date of the hearing. OBITUARY. The death is announced of Mr. J. Lewis, secretary and sales manager of the Cwmgwrach and Empire Collieries Company Limited. Mr. Lewis, who died at his residence in Cardiff on Monday, was very well known also on the Swansea Exchange. Mr. James Wolstencroft, who for 20 years was manager of one of the Clifton and Kersley Coal Company’s pits in the Kersley and Clifton districts, died recently at his residence in Kersley. Mr. Wolstencroft was 61 years of age. Mr. Philip Wedgwood, of Flimby, who died suddenly on Saturday, in his 83rd year, had been actively associated with the coal mining industry in West Cumberland for a lengthy period. He had been a director of the St. Helen’s Colliery Company since 1878, and for 11 years was chairman of directors. The funeral took place at the parish church of Standish, Wigan, on Tuesday of last week, of Mr. James Morris, a well-known Lancashire colliery official, who died the previous Friday, at the age of 64 years. The deceased had been in the employ of the Wigan Coal and Iron Company Limited for 54 years at the firm’s collieries in Hindley, Aspull, and Standish, having for 38 years occupied the position of surface overlooker. He had been at the Standish collieries of the company for the last 26 years. Second-Lieut. J. T. Murray, R.F.C., who has been killed in action at the age of 25 years, was before the war a miner at Wallsend, but had fitted himself for his commission by study at Ruskin College. Mr. Thos. Storey, who has died at the age of 84 years, was a minor official of the Bebside Coal Company, with which he had been connected for 60 years. Mr. Ireby Lewis Chapman, who has died at Durham City, at the age of 43 years, after a long illness, was for years associated with coal exporting interests on Newcastle Quayside. PUBLICATIONS RECEIVED. “ Transactions of the Manchester Geological and Mining Society ” (Vol. 34, Part 12), April 1917, edited by the hon. secretary; “ Transactions of the Manchester Geolo- gical and Mining Society ” (Vol. 35, Part 2), May 1917, edited by the hon. secretary; “ Electrical Engineering Practice,” by J. W. Meares (Messrs. E. and F. N. Spon Limited), price 5s. net; “How to do Business with Russia,” by C. E. W. Petersson and W. Barnes Steveni (Sir Isaac Pitman and Sons Limited), price 5s. net. CATALOGUES AND PRICE LISTS RECEIVED. Donovan and Company, Birmingham.—A new net price list of colliery supplies which are actually in stock has been issued by this firm. These supplies comprise all the regular lines of electrical goods for signalling, lighting' installations, and power equipment in mines, and all repair material. The list will be sent free on application to the offices, 47, Cornwall-street, Birmingham. Lancashire and Cheshire Coal Owners’ Association.—At the monthly meeting of this association, held at the Queen’s Hotel, Manchester, on June 5, on the motion of the presi- dent, Mr. G. C. Greenwell, it was unanimously resolved “ that the members present—representative of the whole of the districts comprised in the association—offer their hearty congratulations to Mr. Thomas Ashton, J.P., secretary of the Lancashire and Cheshire Miners’ Federation, and of the Miners’ Federation of Great Britain, on his appointment as a member of his Majesty’s most honourable Privy Council, coupled with the sincere hope that he may have health to enjoy the distinction.”