. Bulletin - United States National Museum. Figure 73.—Operable model of British locomotive Greyhound, 1905. Penr\sy\var\ia Atlantic-Type Locomotive, 1907 The Atlantic-type steam locomotive is represented in theMuseum collection by a nonoperable model (figure 74) lentto the Museum in 1922 by E. Howard Askew of Baltimore,Md. Constructed by the lender, the model (USNM 307949)is 32 inches long and has a gauge of 2^4 inches. It represents the Pennsylvania Railroad class E3sd , a 4-4-2 steam locomotive with Walschaert valve gear. 92. Figure 74.—Model of Pennsylvania Atlantic-type locomotive,
. Bulletin - United States National Museum. Figure 73.—Operable model of British locomotive Greyhound, 1905. Penr\sy\var\ia Atlantic-Type Locomotive, 1907 The Atlantic-type steam locomotive is represented in theMuseum collection by a nonoperable model (figure 74) lentto the Museum in 1922 by E. Howard Askew of Baltimore,Md. Constructed by the lender, the model (USNM 307949)is 32 inches long and has a gauge of 2^4 inches. It represents the Pennsylvania Railroad class E3sd , a 4-4-2 steam locomotive with Walschaert valve gear. 92. Figure 74.—Model of Pennsylvania Atlantic-type locomotive, 1907. The original locomotive was built at the railroads Juniatashops, Altoona, Pa., in August 1907, construction No. a class E3d locomotive, it was converted to anE3sd in June 1913 by the addition of a superheater in theWilmington, Del., shops of the road. In a letter to Askew (Dec. 14, 1922) the chief of motivepower of the Pennsylvania System, J. T. Wallis, stated thatthe cylinders of the original had a bore and stroke of 22 and26 inches. The drivers were 80 inches in diameter and theboiler carried a steam pressure of 205 pounds. The boilerhad a minimum (internal) diameter of 65V2 inches, and itcontained 170 2-inch flues and 24 5y2-inch flues, while thesuperheater consisted of 96 iy2-inch flues. The distance be-tween flue sheets was 180 inches and the total heating surfacewas 2,571 square feet. The grate was 111 inches long and 72wide. The total weight on the drivers was 127,200 pounds, onthe engine truck 3
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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
