40 THE COLLIERY GUARDIAN. January 4, 1918. ............ I !,■■■■ .. -■III. ......... ■! ■ ■■ ■.... ■■■■■■■—!■■■ ■■ ... , I ... I Illi IBI Ml Bl B M in an efficient manner the necessary and unavoidable loss of heat where it is required. The invention is especially applicable in the extraction of benzol, toluol, etc., from coal gas, for bebenzolising the oil with which the gas is washed to absorb the benzol, toluol, etc., but it is also applicable for the separation of absorbed products from other absor- bents and in other liquid extraction planes. The invention consists in preliminarily heating the absorbent or rich oil to a temperature above the boiling point of that of the product having the highest boiling point, passing the heated absorbent or rich oil through a column still, and subjecting it as it passes through the still to one or more re-heatings at the point or points where its temperature falls to such an extent as to prejudicially affect the separation of the absorbed products by distillation, and/or lead to emulsifi- cation of the absorbent or rich oil. By so re-heating the rich oil, the separation of the absorbed products therefrom can be effected wholly by distillation much more quickly and with a lesser number of trays in the still than usual, and emulsification of the oil is entirely overcome. (Seven claims.) 110452. Improvements in Furnace Doors. A. C. lonides, junr., 34, Porchester-terrace, London, W.—This invention relates to furnace chamber doors of the type in which the weight of the door acting on inclined or wedge surfaces gives rise to reactions causing a closing pressure, and it is particularly applicable to gaseous-fired furnaces in which very close regulation of the conditions of combustion is maintained. In heating furnaces for articles which are to be subjected to forging or like operations, it is customary to provide the heating chamber with a good-sized opening, which is covered by a door sliding in a metal frame or upon runners upon the outside of the furnace structure, such doors being frequently counter-balanced so that they will remain either in the open or closed position. The metal frames or runners, being closely adjacent to the fur- nace front, frequently warp, due to the high temperature, with the result that when the door is closed there are often cracks of considerable size, which allow the entrance of air or the escape of products of combustion depending upon the pressure conditions prevailing within the chamber. Doors balanced to remain in the open or closed position are also frequently left open by an operator after an article has been removed from the chamber, thus occasioning an alteration in the mixture, loss of heat, and scaling. In furnaces heated by the combustion of a closely-controlled mixture of the constituents in the correct proportions for combustion, and in which a pressure above that of the atmo- sphere is maintained by downward displacement of the flue .gases, the foregoing objections often form very serious disadvantages. The object of the present invention is to provide improved means for tightly and automatically closing the doors of furnace chamber openings. The inven- tion consists in a furnace door of the type indicated, in , which the door is formed of a slab of refractory material covering the opening into the furnace, and held tightly in contact with a surrounding surface of like material by the reaction caused by the weight of the door oj part thereof operating upon inclined or wedge-like abutment means. The invention further consists in a furnace opening mouthpiece and closing door, as above indicated, in which a frame or box carrying the refractory slab is provided with rollers co-acting with inclined upright runners, and said door is suspended from a lever system, whereby it may be opened by foot pressure or otherwise, and automatically and tightly closes the furnace opening when released. The invention also consists in the improved door for maintain- ing a tightly closed furnace chamber of the type and for the purpose herein indicated. (Three claims.) 110467. Improvements Connected with the Discharge of Coal Vessels, etc. A. Musker, Trafalgar Buildings, North- umberland-avenue, London, W.C. — This invention has reference to the discharge or removal of coal or like cargo in bulk from barges or vessels, and the elevation and delivery thereof; and it relates to such systems wherein moving or elevating machinery is carried in or upon a pontoon or floating vessel. In the drawings, fig. 1 is an elevation, fig. 2 a plan, and fig. 3 an end elevation, show- ing elevators and gearing carried on a vessel or pontoon, barges from which material is to be removed, and a ship into which the material from the barges is to be delivered. 1 represents the barges from which the material in bulk is to be discharged; 2 is a ship alongside of which the barges 1 are laid, and which is to receive the goods from the barges; and 3 generally represents a machinery-carry- ing vessel or pontoon, i.e.} one carrying gearing elevators by which the material from the barges is taken and delivered into the ship, and bucket grab, or like operating tackle or gear. The barges 1 containing the coal or cargo in bulk, in carrying out the system, are disposed end on and secured to the end of the machinery-carrying pontoon or vessel 3; and the material is delivered from the barges, mechanic- ally and automatically endwise, by a tackle or mechanical means hereinafter described, extending between the machinery pontoon 3, and the end of the barge furthest therefrom; and it is taken and delivered by an automatic grab or the like, marked 5 in the drawings, which is operated by the tackle longitudinally and otherwise, and discharges its contents into the pontoon or vessel 3 (or otherwise as hereinafter described), whence it is taken by elevators 6 in the pontoon 3, and thereby lifted up and subsequently discharged into a shoot 7, or a shoot 7 and conveyor 8, shown in dotted line in fig. 3, by which it is conducted to the ship 2. As will be seen in fig. 1, the machinery pontoon or vessel 3 has two sets of elevators 6, and automatic lifting and discharging mechanism or tackle ; and the two barges 1 are arranged to lie in link with same, or at a suitable angle, on its opposite ends, and to deliver the goods to the respective • elevators; the vessel 3 usually being secured to the ship, and the barges secured to the vessel 3. The means of securing the barges endwise on to the machinery pontoon 3 will be by a species that while it keeps the distance and relative positions practically con- stant, it enables the barge to rise as it is discharged. For instance, in the case shown, the barges 2 have mooring bollards or the like 10, ofie on each side, near the bow, and the pontoon 3 has similar bollards 11 at each angle, and ropes, chain’s, or the like 12 are made fast to these bollards or devices 10 and 11. This enables this relative movement or rising of the barge as discharged to take place. Or in lieu of this means, links secured at each end by free joint connections to the barge and the pontoon may be employed. It will be seen that this transporter grab 5 com- mands and works over the whole of the hold of the barge from end to end ; and that moving of the barge in relation to the pontoon, as it is discharged or emptied, is not required; and by altering the inclination of the post 16, as shown in fig: 3, the line along which the bucket travels or traverses, can be made to be one towards the sides, as well as along the centre of the barge. (Five claims.) HEW PATENTS CONNECTED WITH THE COAL AHD 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.] Adde, S. Explosives. (18906) Auliff, M. Clinometers. (18853) Bailey, H. H., and Shaw, G. Mechanical excavator. (18880) Basset, L. P. Treatment of ores in blastfurnaces. (18974) Bentley, F. Pumps. (18713) Berkeley, A., and Copping, J. L. Fans. (18856) Boorne, W. H. Wet carbonising (19019) Brazil, Straker and Company. Internal combustion engines. (18857) Burt, S. J. Internal combustion engines. (18833) Coates, H. Electric arc furnaces. (18876) Compagnie pour la Fabrication des Compteurs et Materiel d’Usines a Gaz. Water-gas producers. (18757) Cracknell, R. J. Rotary pumps. (18838, 18839) Dawson, A. Feed water filters. (18927) Dennison, R. J. Internal combustion engines. (18715) Derham, J. A. Motor-actuated drills, etc. (18810) Drake, W. A., and Drakes Limited. Vertical retorts for manufacture of gas. (18996) Fedden, A. H. R. Internal combustion engines. (18857) Foster, L. L. Internal combustion engine. (18772) Grocott, F. J. Furnaces for generating producer gas, and their application to heating flues of steam, etc., boilers. (18815) Harburn, R. Water tube boilers. (18929) Harper, J. W. Internal combustion engines. (18774) Hugh, P. G. Control of power-driven winches. (18783) Killen, E. B. Engines. (18806) Kirke, P. St. G. Generation of steam, feed water heating, etc. (18913) Klippert, E. T. Rapid releasing hooks. (18826) Latour, M. Dynamo electric machines. (18753) Laudren, R. Apparatus for separating dust from ores, coal, etc. (19005) Magrath, E. G. Clinometers. (18853) Mavor and Coulson, and Moore, M. S. Cutter disc machines for mining coal, etc. (18836) Meiklejohn, D. Internal combustion engines. (18725) Mellor, G. A. Internal combustion engines. (18774) Nelson, J. Low-temperature distillation of coal, shale, etc. (18983) Neptune Mills Limited. Internal combustion engines. (18725) Parr, J. and R. J. Internal combustion engines. (18892) Pleasance, R. W. Apparatus for screening and washing gold, sand, coal, etc. (18744) Poynter, J. F. Dynamo electric machines, etc. (18963) Ransomes and Rapier. Rotary pumps. (18838, 18839) Ravner, G. H. T. and P. Valve apparatus for rock drills, "etc. (19003) Ruehmling, J. H. Internal combustion engines. (18772) Siemens-Schuckertwerke. Hauling or winding machinery. (18959) Simpson, G. W. S. Pneumatic separators. (18737) Soc. Anon, pour 1’Exploitation des Brevets Schoedelin. Fans. (18760) Thaberg, N. T. Producing gas from moist fuel in fur- naces, gas producers, etc. (18911) Thompson, H. F. J., and Wood, T. H. Means for utilis- ing waste heat in electrical machinery, etc. (18763) Trewman, H. J. Fans. (18856) Walker, G. H. Internal combustion engines. (18832) Walster, J. and S. Generating coal gas in retorts. (18770) Watford Electric and Manufacturing Company. Electric arc furnaces. (18876) . White and Company, J. S. Internal combustion engines. (18774) Whiteley, W. Gas engines. (18928) Wood, W. R. Furnaces with mechanical stoker. (18901) (Wright, W. W.). Internal combustion engines. (18723) Complete Specifications Accepted. (To be published on January 10.) [Note.—The number following the application is that which the specification will finally bear.] 1916. 12579. O’Brien, J. M. Liquid fuel for internal combus- tion engines. (111864) 16912. Grice, S. Anemometer. (111877) 17698. Wellington, S. N., and Etherton, S. B. Treat- ment of refuse liquors from coke oven and gas works. (111883) 17956. Dutton, J. Steam boiler furnaces. (111901) 18006. Renold Limited, H., Renold, H., and Carter, A. E. Multiple-strand silent chains. (11910) 18208. Neuland, A. H. Dynamo electric machinery. (111915) 18248. Armstrong, Whitworth and Company, Sir W. G., and Rowden, W. C. Manufacture of steel. (111916) 18311. Calvert, H. Internal combustion engines of the two-stroke type. (111918) ! 18358. Brammer, H. Driving belts, etc., of chain work. (111922) 18419. Kopczewski, W. S. Gas turbines. (111924) 1917. 251. Heyl, G. E. Liquid hydrocarbons. (111933) 252. Heyl, G. E. Production of carburetted water-gas. (111934) 883. Aylsworth, A. M., and Savings Investment and Trust Company. Production of phenol. (103664) 1102. Appleby, E. Coal-cutting machines. (111943) 1748. Davis and Son, J., and Davis, W. H. Electric bells. (111948) 3196. Hammond, T. C., and Richardson, C. K. Appar- atus for the distillation and dehydration of coal tar, mineral or vegetable oils, and the like, and debenzolising of wash and other oils and liquids. (111956) 3689. Richardson, C. K., and Hammond, T. C. Com- bined condenser and heat interchanger. (111961) 3963. Wallaston, T. R. Gas producers. (111964) 4151. Southall, J. Internal combustion engines. (111965) 5426. Warrington, E.' Furnace dampers. (111969) 7203. Abbott, W. G. Rotary pump. (111974) 7665. Renold Limited, H., Renold, H., and Carter, A. E. Multiple-strand silent chains. (111976) 13491. Schmidt, H. F. Turbines. (110161) Complete Specifications Open to Public Inspection Before Acceptance. [Note.—The number following the application is that which the specification will finally bear.] 1917. 15868. Dubbs, C. P. Method for treating petroleum and other hydrocarbons. (112010) 15938. Surface Combustion Company. Apparatus for burning explosive gaseous mixtures. (112011) 18696. Rudberg, S. Pneumatic rock drilling machines. (112028) PUBLICATIONS RECEIVED. “ First Report to the Council of the North-East Coast .Institute of Engineers and Shipbuilders on Certain Methods of Producing Vacuum,” by Edwin L. Orde, C. Waldie Cairns, M.Sc., and J. Morrow, M.Sc., D.E. (Newcastle on Tyne : Published by the Institute, Bolbec Hall), price 10s. 6d.; “Transactions of the Institution of Mining Engineers” (Vol. 54, Part 3), December 1917, price 6s.; “The Function and Place of Advertising in Modern Business Economics, with Particular Reference to the Attitude of Government Departments to Adver- tising ” (issued by the Council of the Association of British Advertising Agents, Incorporated, Donington House, Norfolk-street, Strand, London, W.C. 2); “The M. and C. Apprentices’ Magazine ” (Vol. 1, No. 4), Christmas number, price 4d.; United States Bureau of Mines (Department of the Interior)—“ Monthly State- ment of Coal Mine Fatalities in the United States, May, 1917,” and “ List of Permissible Explosives, Lamps and Motors Tested Prior to June 30, 1917,” compiled by Albert H. Fay; “ Beama Journal” (Russian and Spanish Editions), December (published at Oakley House, Bloomsbury, London, W.C. 1); “ Outbursts of Explosive Gases in the Crow’s Nest Pass Coal Field, British Columbia,” by James Ashworth, price I dol.; “Mine Rents and Royalties ” (London : Published at the Sur- veyors’ Institution, 12, Great George-street, West- minster, S.W. 1); “Bulletin of the American Institute of Mining Engineers ” (No. 132), December 1917; “ Journal of the Franklin Institute ” (Vol. 184, No. 6), December 1917, single numbers 50c.; “Monthly Bulletin of the Canadian Mining Institute” (No. 68), December, edited by the secretary; “ The Journal of the Chemical, Metallurgical and Mining Society of South Africa ” (Vol. 18, No. 4), October 1917, single copies 3s.; New Zealand Geological Survey (Department of Mines)— (Palaeontological Bulletin No. 5), “ Description of New Tertiary lytollusca Occurring in New Zealand, Accom- panied by a Few Notes on Necessary Changes in Nomen- clature ” (Part I.), by Henry Suter. Wellington: By Authority, Marcus F. Marks, Government printer.) DIARIES AND CALENDARS. Syren and Shipping Limited.—We are asked to state that the price of the International Mercantile Diary and Year Book, referred to on page 1198 of our issue of December 21, is 5s. net, inland postage 6d. Superheat Furnace Company Limited (Bradford). — A neat, business-like calendar for the wall bears a handy wad of daily tear-off slips, which are printed effectively in red and black on white paper. The sectional view of the super- heat furnace system is a useful reminder of the growing national importance attached to economy, combined with the fullest efficiency, in steam generating. Davenport Engineering Company Limited (Bradford, Hull, and Fleetwood).—This well-known engineering under- taking has issued a wall calendar on which attention is particularly drawn to water coolers (Holehouse’s patent). The illustration is typical of the company’s work in that direction. The tear-off slips are conveniently affixed to the calendar, and the latter is of suitable size for any office wall. Westminster Tool and Electric Company (London, E.C.). —A handy card for the wall confines itself to indicating only one feature of the company’s important business, but as this item is the “ Wes tool ” portable electric drill, it is sufficiently typical to denote the character of the industry. The.drill is made in three sizes for direct current. The calendar has been made compact by allocating a month to each removable slip, and as all dates are boldly relieved in white on a black ground, one’s eye easily picks out the desired day or date. “ Perfecta ” Boiler Circulator Limited (London, E.C.).— Blue and orange, combined on stout cardboard which will not lose its shape, make a cheerful looking calendar for any office wall. The tear-off slips may be used as a diary, and engagements noted on them in advance will come into sight on the specified dates. A business-like reminder points out that 12 to 15 per cent, more steam and 6 to 8 per cent, saving in fuel result from the use of the “ Perfecta ” single hood circulator. Simon-Carves Limited (Manchester). — With the excep- tion of the company’s name in bold gilt lettering upon a glazed cream ground—a sumptuous combination, with the utilitarian advantage of always appearing bright and clean —no reference to business appears upon the wall calendar for 1918. An artistic metal projection holds the tear-off slips, each of which bears an apt quotation for the day. In this way literature reaches out to the prosaic duties of coal washing, by-product manufacturing, and cementation process. In the construction of plant for such purposes, Messrs. Simon-Carves Limited have certainly put into prac- tice some of the sound precepts they offer to all other busi- ness men. The slips are neatly printed in chocolate- coloured ink.