. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . 4. in. Wheels, diameter, outside tires,62 ins.; driving journals, main, diameter,13 ins.: length, 16 ins.; driving journals,11 ins. by 16 ins.; engine truck wheels,diameter, 33 ins. Boiler, working pres-sure, 205 lbs.; diameter of first ring. 96ins.; firebox, 168 ins. by 96 ins.; Ilreboxplates, thickness of tube and combustion w eight in working order, 575,tXX) lbs.;weight on drivers, 540,000 lbs.; weight onleading truck, 35,000 lbs.; weight of en-gine and tender in working order, 794,000lbs.


. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . 4. in. Wheels, diameter, outside tires,62 ins.; driving journals, main, diameter,13 ins.: length, 16 ins.; driving journals,11 ins. by 16 ins.; engine truck wheels,diameter, 33 ins. Boiler, working pres-sure, 205 lbs.; diameter of first ring. 96ins.; firebox, 168 ins. by 96 ins.; Ilreboxplates, thickness of tube and combustion w eight in working order, 575,tXX) lbs.;weight on drivers, 540,000 lbs.; weight onleading truck, 35,000 lbs.; weight of en-gine and tender in working order, 794,000lbs.; wheelliase, driving, 17 ft. IA in.;wheelbase total. 54 ft. «M. ins.; wlieelbase,engine and tender, 97 ft. 3fii ins. Ratios;Weight on drivers -^ tractive effort, ;total weight -f- tractive eflFri, ; trac-tive effort X diam. drivers -=- ec|uivalentheating surface. ; equivalent heating. PENNSYLVANIA MALLET WITH INTERESTING NEW FEATURES the main cranks, are of real service infacilitating the starting of the engine. The locomotive is equipped with theWestinghouse E-T equipment in brakegear, furnished with four 16-in. by , supplied by two Sy^-in. cross-compound pumps, attached to the frontend of the smoke-box. The general dimensions of this loco-motive are as follows: chamber connection, 16 in.; door, H in.;others, 7/!6 in.; firebox, water space, 5ins.; tubes, 137; diameter, 2]4 ins.; 284,diameter, 3!^ ins.; length, 19 ft. Heatingsurface, tubes and flues, 6,125 sq. ft.;healing surface, firebox, 531 sq. ft.; heal-ing surface total, 6,656 sq. ft.: superheaterbeating surface, 3,136 sq. ft.; equivalenthealing surface, sq. ft.; grate area,112 sq. fl.; tractive eflfort, 135,000 lbs.; surface -r- grate area, ; lirelxjx heat-ing surface -r- equivalent heating surface,per cent., ; weight or drivers -r- equiva-lent heating surface, ; total weig


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