. Bulletin. Science. Figure 13.—^James White's hypocycloidal straight-line mechanism, about 1800. The fly-weights (at the ends of the diagonal arm) functioned as a flywheel. From James White, A New Century of Inventions (Manchester, 1822, pi. 7). result that the pivot, to which the piston rod was connected, traced out a diameter of the large pitch circle (fig. 13). White in 1801 received from Napoleon Bonaparte a medal for this invention when it was exhiijited at an industrial exposition in ' Some steam engines employing White's mechanism were built, but without conspicuous commercial s
. Bulletin. Science. Figure 13.—^James White's hypocycloidal straight-line mechanism, about 1800. The fly-weights (at the ends of the diagonal arm) functioned as a flywheel. From James White, A New Century of Inventions (Manchester, 1822, pi. 7). result that the pivot, to which the piston rod was connected, traced out a diameter of the large pitch circle (fig. 13). White in 1801 received from Napoleon Bonaparte a medal for this invention when it was exhiijited at an industrial exposition in ' Some steam engines employing White's mechanism were built, but without conspicuous commercial success. White himself rather agreed that while his invention was "allowed to possess curious prop- erties, and to be a pretty thing, opinions do not all concur in declaring it, essentially and generally, a good ; ^^ The first of the non-Watt four-bar linkages ap- peared shortly after 1800. The origin of the grass- hopper beam motion is somewhat obscure, although 2» H. W. Dickinson, "James White and His 'New Century of Inventions,' " Transactions of the Newcomen Society, 1949—1951, vol. 27, pp. 175-179. 3" James White, A New Century of Inventions, Manchester, 1822, pp. 30-31, 338. A hypocycloidal engine used in Stourbridge, England, is in the Henry Ford 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 Smithsonian Institution; United States. Dept. of the Interior; United States National Museum. Washington, Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off
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