624 THE COLLIERY GUARDIAN. September 29, 1916. frame f is supported, by a worm 45, engaging with the worm wheel on the axle 44. (Five claims.) 16268 (1915). Improvements in Firebars for Furnaces. V. R. Chadwick, of the Turbine Furnace Company Limited, Caxton House, Westminster, London.—Relates to improve- ments in firebars of the type described in Patent No. 25657 of 1912. Fig. 1 is a plan of two adjacent firebars, fig. 2 a front view of fig. 1, and fig. 3 a cross-section through X, X (fig. 2). a are two of the downwardly and forwardly pro- jecting firebars having end shoulders b which rest upon the -b ! cL' a I edges of the air trough, while the forward edges of the fire- bars dip into the trough-like airway to the required extent. Distance strips c are provided on the firebars, so that when they are assembled air spaces d will be formed between the firebars. The locking device consists of a lug e projecting from the rear face of the firebar a and extending sufficiently far rearwards that the rear of the lug of one firebar will con- tact with the forward edge of the corresponding lug of the adjacent firebar when they are assembled across the air- trough. To permit the lug e of one firebar to pass through the adjacent firebar, the firebars are slotted from the lip upwards to the required extent as shown at f. The rear edge g of the lug e is preferably at right angles to the rear face of the firebar a, and its forward edge h will be corre- spondingly sloped to abut against the rear edge of the next firebar of the set. When the firebars are assembled along the trough the lugs e will form a rib from back to front of the grate. The invention is applicable to firebars which in plan show curved back and front edges, or firebars having both edges straight, and also to firebars which in side view are curved on both faces or on one face only. The contact- ing surfaces of the different parts of the bar (fig. 3) are inclined at different angles to the vertical -and the front and rear faces of the end shoulders b are parallel with one another. The distance strips c are parallel with the upper part i of the lug e and with the forward face of the firebar a, and the fore edge or face h and rear edge g of the lug e are parallel with one another and at right angles to the rear face of the firebar a. (Three claims.) 101116. Improvements in the Settings of Gas Retorts. H. A. Carpenter, of Camp Meeting-road, Sewickley, Penn- sylvania, and Biter-Conley Manufacturing Company, of Leetsdale, Pennsylvania, U.S.A.—Relates to apparatus for the manufacture of gas of the type in which the setting for the gas retorts is provided with a number of channels arranged in parallel planes at right angles to the retorts and spaced apart in the direction of the length of the retorts and communicating with a combustion chamber or chambers so that the products of combustion pass through said channels, and in which the setting walls between the channels are each in direct contact with the retort walls, around the entire exterior surfaces of the latter. Fig. 1 is -a vertical sectional view on two lines, one extending through the other between the retorts. Fig. 2 is a fragmentary vertical sectional view of the mass through one of the channels for the products of combustion. Fig. 3 is a fragmentary view showing the manner in which the blocks of the mass are arranged and assembled. A general type of combustion chamber is indicated at 20, one of these chambers being shown -as communicating with the channels of the setting through openings 21, the bridging walls of which have a keystone 22 which permits of the proper expansion action of the bridge portion -above the chamber. 20* designates flues for waste gases, these chambers communicating with channels 28 by openings 21“ the walls of which include the keystone 22. The setting walls of the -structure are made up of blocks 25b (fig. 2), which are preferably of such shapes -as to provide a columnar formation between vertical rows of retorts, the blocks of such formation acting to support the arches of the retorts, which -are made up of other blocks 25b, and extend between adjacent setting walls, and which practically form the walls of the retorts. Division blocks 24 are preferably employed to segregate the vertical rows of -retorts into pairs. The shapes of the blocks prevent the blocks of the -arches from passing out of position when assembled, -this being aided by the dowel pin arrangement 26. Expansion spaces are also provided at the top of -the combustion chamber and waste gas flues, at 23", thus making the arch structure of which the keystone 22 forms a part also expansible. The setting walls of the structure, as well -as the retort arches, are composed of blocks 25b, arranged in contact in the direction of the width of the structure, and (figs. 1 and 3) each block is provided with a flange 25“, projecting in the direction of the width of the structure, which flanges, when the apparatus reaches -the working temperature, enter into the formation of the walls of the retorts, and at the same time serve to space the blocks from each other in the direction of the width of the structure, so -as to provide the spaces or channels 28 through which the products of combustion, which effect the heating of the retorts, may pass, said channels being open to the generating combustion chambers, but not communicating with each other. As -shown in fig. 2, the top of the channels 28 are closed by suitable blocks 29. The blocks of the arches may be arranged to provide channels -therethrough connecting opposite sides of the retort, interrupted by baffle blocks 27. The blocks 25b are accurately shaped, and, if necessary, ground in order that the joints may be substantially free from leakage. The blocks 25 b are preferably of silica material. As shown in fig. 1, the setting is composed of a mass of closely associated refractory material having numerous narrow channels 28 extending vertically and at narrow intervals from top to bottom, which mass is adapted to take up the heat from the products of combustion very rapidly -and store it -around -the retorts -thus providing for most rapid transference of heat to the retort ■walls. (Seven claims.) PUBLICATIONS RECEIVED. The Fan. By C. H. Innes. Revised by W. M. Wallace and F. R. Jolley. London : The Technical Publishing Company Limited. Price, 8s. 6d. net. The Indicator Handbook : A Practical Manual for Engineers. By C. N. Pickworth. Manchester : Emmott and Company Limited. Price, 3s. net. Supplement to “ Guide to the Income-Tax.” By F. B. Leemi-ng. London : Effingham Wilson. “ Annales des Mines : Partie Administrative ou Recueil de Lois, Decrets, Arretes et Autres Actes ” (Onzifeme Serie, Tome 5) (Paris : H. Dunot and E. Pinat); “ The Techno- logy of Marble Quarrying,” by 0. Bowles (Bulletin 106, Department of the Interior, United States Bureau of Mines); “Wigan and District Mining and Technical College Calendar for Session 1916-17,” price 2d.; “ Journal of the Franklin Institute” (Vol. 182, No. 3), September; “Bulletin of the Imperial Institute” (Vol. 14, No. 2), price 2s. 6d.; “ Monthly Bulletin of the Canadian Mining Institute ” (No. 53), September. The late Mr. J. G. Weeks, -agent and managing owner of the Bedlington collieries, and one of the owners of Seghill Colliery, left estate, evclusive of settled property, valued for probate at £62,481 gross and £62.104 net. NEW PATENTS CONNECTED WITH THE COAL AND IRON TRADES. Applications for Patents. [Notb.—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.] Anschutz and Company (13443). Dynamo electric machines. Ashworth, E. C. J. (13258). Casting steel ingots, etc. Best, W. (13456). Miners’ safety lamps. Birrell, J. and W. (13233). Internal combustion engines. Bloxham, A. G. (Evence, Coppee et Cie.) (13540). Regener- ative coke ovens, etc. Bostaph Engineering Company (13428). Process of trans- forming mineral oils. Bower, F. and I. (13420). Internal combustion engines. Burdick, C. L. (13467). Dust distributors. Burt, W. (13387). Automatic wheel centre lubricator for colliery trucks, wagons, trams, etc. Clermont, J., and Eggimann, A. (13389). Composition for effecting economy in consumption of fuel. Cochrane, A. M. (13544). Hydraulic engine. Cruyt, L. (13260). Apparatus for treating and cooling air and gas. Deakin, F. B. (Roth and another) (13363). Transforming dense crude petroleum, etc., into oil of less density. Douglass, A. E. (13394). Apparatus for making briquettes. Drake, W. A., and Drakes Limited (13455). Vertical retorts. Ewing, H. 0. (13441). Internal combustion engines. Field, T. W. (13441). Internal combustion engines. Freville, G. P. H. de (13247). Trunk pistons. Hall, I. (13318). Gas fired furnaces Halliday, T. E. 113256). Steam generators. Hawthorne, W. (13347). Tipping wagons. Heenan and Froude (13260). Apparatus for treating and cooling air and gas. Hill, L. G. (13467). Dust distributors. Hommel, W. (13238). Rabbles for mechanical roasting fur- naces. Kapferer, H. (13213). Power transmission apparatus. Ladishens-ky, I. A. (13430). Fire and water tube boiler. Lamkin, A. E. (13287) Internal combustion engines. Maude, F. N. (13408). Generating power. Robi-nson and Son, T., and Robinson, C. J. (13265). Dust collectors. Robinson, J. (13201). Charging cupolas. Robinson, S. (13434). Boring tools. Sablin, A. (13493). Blast furnace hoists. Salisbury, A. D. (13385). Mechanism for transmitting rotary motion. Soo. Anon. Astra. (13213). Power transmission apparatus. Stevenson, T. J. (13265). Dust collectors. Taylor Limited, G. (13534). Winze pulleys, etc. Tilston, E. (13348). Internal combustion engines. Tompkins, H. N. (13469). Petrol substitutes. Tyrer, D. (13423). Method of separating phenol or its homologues from an aqueous liquid. Vautin, C. (13224). Recovery of metals from slags. Complete Specifications Accepted. (To be published on October 12.) 1915. 11860. Apparatus for discharging aerated vapour from steam condensers. Morison. 13142. Rock drills or impact engines. Howell. 13480, 13482, 13483, 13484. Dynamo electric machines. Heys (Neuland Patents Limited). 13525. Couplings of railway wagons, trucks, and the like. Tomkins. 13561, 13562. Dynamo electric machines of the commutator type. Schroeder. 14016. Signalling mechanism for mines. Mack. 14249. Mechanical appliances for loading and unloading coal, stone, sand, or the like. Thomas. 14976. Feed water heating apparatus. Willans, Luard, and O’Donnell. 15396. Rolling mill drives. Farwell and Gibbons. 15651. Driving apparatus for shaker conveyors. Jenkins and Ellacott. 1916. [Notb.—The numbers following the application are those which the application will finally bear.] 1580. Power transmission and reversing gear. Seabury, H. 101436 5029. Utilisation of pitch as a fuel. Bolling, G. H. H. 101444 5129. Means for supplying air to furnaces for consuming smoke. Jansen, J. Hassel- 101446 5526. Dynamo electric machines. Teuland, A. H. 101447 5699. Yard stick for the use of colliery or mining officials. Gulliford, A. G. " 101448 7317. Furnace firebars. Bennis, A. W. 101454 M. COULSON & CO. LTD., SPENNYMOOR, Makers of Coal Washers, Screening Plant, . . Conveying, Elevating, and Crushing Machinery, Tipplers, Tub Controllers, . , Storage and Drainage Bunkers. . . Replace parts and Repairs given Special Attention. Estimates and Full Particulars on Application. ■'