Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880)
D. Appleton and Company, Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 335
2S65. A^k … WT radial slip is allowed between the axle-boxes and the axle-guards on the two extreme ends. Shouldthe latter be driving-axles, a play between the stub-ends and the shoulders of the crank-pins is alsogiven. The Pilot.—American locomotives are provided in front with a pilot or cow-catcher, S,…
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