. American engineer and railroad journal . is is not compiledfrom tests, but is made up operating fuel records of theroad, which accounts for thevariation of economy during thevarious periods. The economyshown by the superheater is sowell defined that there is noquestion of its effective and sub-stantial saving. When the question of pur-chasing more locomotives aroselast Spring it was felt that theresults so far obtained were suffi-ciently definite to warrant theapplication of the superheateron a larger scale and that onlyby doing this could this devicebe given a sufficiently thorough
. American engineer and railroad journal . is is not compiledfrom tests, but is made up operating fuel records of theroad, which accounts for thevariation of economy during thevarious periods. The economyshown by the superheater is sowell defined that there is noquestion of its effective and sub-stantial saving. When the question of pur-chasing more locomotives aroselast Spring it was felt that theresults so far obtained were suffi-ciently definite to warrant theapplication of the superheateron a larger scale and that onlyby doing this could this devicebe given a sufficiently thoroughand practical test to developany defects which might occurwere it in use on a considerablenumber of engines in regu-lar service. If applied in a few isolated cases the engineswould perhaps receive special attention from enginemen androundhouse forces, even though such treatment was not in-tended by the management. Vl Holi drilled on VltIi. ;d cenler line at Wp .ifhbnsbiQg i* placed in cylinder Fned /;j^ smaller ilia,lliiiu resl of bushing. bejuepn [ Sections of the Piston Vaxve and Valve Bushincs. thanical superintendent, applied a Schmidt smokebox super-heater to an 18 x 24, 4—6—0 freight engine, No. 548. Duringthe succeeding two years this engine gave complete satisfac- The decision between the use of compound and simple en-gines was more difficult. It will be noted that taking the aver-age economy of No. 548 over corresponding engines, at 30 per Decehbeb, 1904. AMKIMCAN ENGINEER AND RAILROAD JOURNAL cent, am] the economy of No. 1000 ami No. J30U OVOI CO ponding compound engines, at from 16 to 20 per eenl , tn< ferenoe In thla relatlvt momy was al t thai which would I., expected over a compound freight ami simple engine, inOther words the superheater engines, Whether compound orsimple, show about the same p rcentagfl of economy over anordinary simple engine. This is in accord with the conclusionsof Herr Garbe of the Prussian State Railways, who has beenan extensive use
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
