. Bulletin - United States National Museum. ber 1893 after havingmade daily demonstration runs at the exposition. They re-turned to Washington under steam via Pittsburgh, Altoona,Harrisburg, and Baltimore. The next time the locomotiveleft the Museums confines was for a brief sojourn at the Fairof the Iron Horse in 1927 (figure 35). More recently it ap-peared at the Chicago Worlds Fair in 1933 and the NewYork Worlds Fair in 1939 and 1940. In early 1940, a full sized operable replica of the John Bulllocomotive (figure 36) was made at the Altoona shops of thePennsylvania Railroad Co. The cylinder
. Bulletin - United States National Museum. ber 1893 after havingmade daily demonstration runs at the exposition. They re-turned to Washington under steam via Pittsburgh, Altoona,Harrisburg, and Baltimore. The next time the locomotiveleft the Museums confines was for a brief sojourn at the Fairof the Iron Horse in 1927 (figure 35). More recently it ap-peared at the Chicago Worlds Fair in 1933 and the NewYork Worlds Fair in 1939 and 1940. In early 1940, a full sized operable replica of the John Bulllocomotive (figure 36) was made at the Altoona shops of thePennsylvania Railroad Co. The cylinder dimensions of 11by 20 inches were apparently known by the shops at thattime, as the drawings made then for use in building thereplica show the bore and stroke to be 10% by 20 inches. Per-haps the bore of the original locomotive was also 1078 inchesin 1831, and was increased to 11 inches through many yearsof wear. However, the figure of 9 inches for the bore, so oftenused in the past, is definitely incorrect. -aipppwi ?????ilMipi. Figure 33. — As this early photo shows, the John Bull toward the end of its activecareer had a cab and large smokestack, and an 8-wheeled tender was used. 44
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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
