. Bulletin - United States National Museum. Science. U. S. NATIONAL MUSEUM BULLETIN 173 PLATE 17 1 « !. Adjustable cut-off valve Gears. 1. Francis B. Stevens cut-off, 1861 (model; no. 308644). See p. 66. 2. Corliss drop cut-off valve gear, 1849 (model; no. 308646). See p. 71,. 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
. Bulletin - United States National Museum. Science. U. S. NATIONAL MUSEUM BULLETIN 173 PLATE 17 1 « !. Adjustable cut-off valve Gears. 1. Francis B. Stevens cut-off, 1861 (model; no. 308644). See p. 66. 2. Corliss drop cut-off valve gear, 1849 (model; no. 308646). See p. 71,. 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
