. Bulletin - United States National Museum. Science. "Pioneer," about igoi. scene unknown. Norrell.) {Photo courtesy of Thomas seeled by the 8-vvheel engine. The desire to operate longer trains and the need for engines of greater trac- tion to overcome the steep grades of American roads called for coupled driving wheels and machines of greater weight than the 4—2-0. After the introduction of the 4 4 0, the single-axle engine received little attention in this country except for light service or such special tasks as inspection or dummy engines. There was, however, a renewed interest i
. Bulletin - United States National Museum. Science. "Pioneer," about igoi. scene unknown. Norrell.) {Photo courtesy of Thomas seeled by the 8-vvheel engine. The desire to operate longer trains and the need for engines of greater trac- tion to overcome the steep grades of American roads called for coupled driving wheels and machines of greater weight than the 4—2-0. After the introduction of the 4 4 0, the single-axle engine received little attention in this country except for light service or such special tasks as inspection or dummy engines. There was, however, a renewed interest in ^singles''. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States National Museum; Smithsonian Institution; United States. Dept. of the Interior. Washington : Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off.
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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
