. The Street railway journal . rsection before escaping, higher fuel economies are insured thanheretofore possible in steam boiler practice. The tubes can be cleaned with greater ease and less expensethan straight tubes; scaffolding or other structures are notneeded, and there are no hand-hole plates to remove and re-place. One manhole gives access to every tube in the boiler,and any of the mechanical rotary cleaners, now so extensivelyused, will clean them in the most direct manner. The Milne steam superheater is of the most simple form,being composed of an upper and lower steel header, havin
. The Street railway journal . rsection before escaping, higher fuel economies are insured thanheretofore possible in steam boiler practice. The tubes can be cleaned with greater ease and less expensethan straight tubes; scaffolding or other structures are notneeded, and there are no hand-hole plates to remove and re-place. One manhole gives access to every tube in the boiler,and any of the mechanical rotary cleaners, now so extensivelyused, will clean them in the most direct manner. The Milne steam superheater is of the most simple form,being composed of an upper and lower steel header, havingeach end of the superheating tubes expanded therein, the flexi-bility of this form amply providing for expansion and con-traction. Being situated in the front of the boiler it is directlyaccessible for any purpose, and in case of serious derangementcan be removed entirely while the boiler is under pressure. The simple nature of the connections permits instantaneousflooding, accompanied by a perfect circulation of the water in. SECTION _OF WATER-TUBE BOILER the boiler, and, what is equally important, the degree of super-heat can be varied to suit all practical working conditions. The simplicity of the complete boiler and superheater guar-antees the greatest ease and efficiency in operation and thelowest cost for maintenance. They are constructed in sizes upto 1000 hp, and for any steam pressure, the design permittingample grate area for capacities far in excess of the rating. May 7, 1904.] STREET RAILWAY JOURNAL. 711 1500-KW ALTERNATOR FOR ST. LOUIS The following is a description of the large alternating-cur-rent generator to be installed by the National Electric Companyat the central power station of the Louisiana Purchase Ex-position at St. Louis. This alternator will be direct connectedto a 2250-hp Hamilton-Corliss vertical cross-compound rated output is 1500 kw, 25 cycles, 6600 volts, running at83 r. p. m. Like all of the standard alternators built by the Nationa
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
