. Bulletin. Science. Figure 34.âHachette's ferryboat of 1808, a "machine" for converting continuous rectilinear motion into alternating circular motion. From Phillipe Louis Lanz and Augustin de Betancourt, Essai sur la composition des machines (Paris, 1808, pi. 2). Hachette's classification scheme was copied and his chart reproduced.^' A translation of the work of Lanz and Betancourt '- under the title Analytical Essay on the Construction of Machines, was published about 1820 at London by Rudolph Ackermann (for whom the Ackermann steering linkage was named), and their synoptic chart
. Bulletin. Science. Figure 34.âHachette's ferryboat of 1808, a "machine" for converting continuous rectilinear motion into alternating circular motion. From Phillipe Louis Lanz and Augustin de Betancourt, Essai sur la composition des machines (Paris, 1808, pi. 2). Hachette's classification scheme was copied and his chart reproduced.^' A translation of the work of Lanz and Betancourt '- under the title Analytical Essay on the Construction of Machines, was published about 1820 at London by Rudolph Ackermann (for whom the Ackermann steering linkage was named), and their synoptic chart was reprinted again in 1822 in Durham.^' In the United States, Appleton's Dictionary of Machines ^* (1851) adopted the same system and used the same figures. Apparently the wood engraver traced directly onto his "Jacob Bigelow, Elements of Technology, ed. 2, Boston, 1831, pp. 231â256; Olinthus Gregory, A Treatise oj Mechanics, 3 vols., ed. 3, London, 1815. '2 Rudolph Ackermann, Analytical Essay on the Construction of Machines, London, about 1820, a translation of Lanz and Betan- court, op. cit. (footnote 64). °3 Thomas Fenwick, Essays on Practical Mechanics, ed. 3, Dur- ham, England, 1822. 'â * Appleton's Dictionary of Machines, Mechanics, Engine-Work, and Engineering, 2 New York, 1851 ("Motion").. 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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