. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . ter. The totalengine weighs 180,000 lbs. and of this146,000 lbs. are on the drivers. The lead-ing pony truck carries a weight of 16,000lbs. and the rear wheels bear 18,000 rigid wheel base measures 12 ft., andthe total wheel base in 27 ft. 6 ins. The weights so distributed as stated,with a factor of adhesion of , the 130 sq. ft. The total, with the super-heater, as given at 288 sq. ft., comes upto 1754 sq. ft. The grate area is The fuel is oil and the tank holds1,000 g
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . ter. The totalengine weighs 180,000 lbs. and of this146,000 lbs. are on the drivers. The lead-ing pony truck carries a weight of 16,000lbs. and the rear wheels bear 18,000 rigid wheel base measures 12 ft., andthe total wheel base in 27 ft. 6 ins. The weights so distributed as stated,with a factor of adhesion of , the 130 sq. ft. The total, with the super-heater, as given at 288 sq. ft., comes upto 1754 sq. ft. The grate area is The fuel is oil and the tank holds1,000 gals., of it. The water supplyamounts to 3,000 U. S. gals. This boileris made of open hearth steel, thoroughlybraced and stayed. Brass wash-out plugsare supplied and the holes for the plugsare expanded so as to give sufficientthickness for an ample number of cylindrical sheets are $i in. thick,the back head is 9-16 in. thick, the tubeand throat sheets are ¥s m- The hori-zontal seams are butt-jointed, sextupleriveted, with inside and outside dome is 32 ins. in diameter, and 26. 2-8-2 TYPE ENGINE FOB THE NITRATE COMPANY OF CHILE, S. by the H. K. Porter Co. of Pittsburgh. Pa. tractive power is calculated at 36,240 lbs.,the height of this engine for clearance, is14 feet., its width is 10 ft., 10 ins., andthe length over the bumpers is 34 ft. Theboiler is of the straight type, 66 ins., indiameter at the largest ring, and main-tains a steam pressure of 185 lbs. persq. in. The fire box is 84 ins., long, 57ins. wide at the top, and 52 ins. at thebottom. The boiler is supplied with atype A superheater, double loop style,made up of 22 units. The arrangementof the tubes gives 155 of 2 ins. diameterand 22 flues SH ins. diameter. Thelength of the tubes is 12 ft. In the matter of heating surface thetubes give 967 sq. ft., the flues give 369sq. ft., and the fire box measures up to ins. high. A fusible plug is used in thecrown sheet. The water spaces at the fire b
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