. Bulletin. Science. rY\^\f\yyj\^U^f\?^*f\ F|_ Figure 36.—Typical mechanisms from E. F. and N. Spon, Dictionary or Engineering (London, 1873, PP- 2426, 2478). ; '* In 1817 the North American Review also remarked upon the scarcity of engineering books in America.^' The Scientific American, which appeared in 1845 as a patent journal edited by the patent promoter Rufus Porter, carried almost from its beginning a column or so entitled "Mechanical Movements," in which one or two mechanisms—borrowed from an English work that had borrowed from a French work—were illus- trated an
. Bulletin. Science. rY\^\f\yyj\^U^f\?^*f\ F|_ Figure 36.—Typical mechanisms from E. F. and N. Spon, Dictionary or Engineering (London, 1873, PP- 2426, 2478). ; '* In 1817 the North American Review also remarked upon the scarcity of engineering books in America.^' The Scientific American, which appeared in 1845 as a patent journal edited by the patent promoter Rufus Porter, carried almost from its beginning a column or so entitled "Mechanical Movements," in which one or two mechanisms—borrowed from an English work that had borrowed from a French work—were illus- trated and explained. The American Artisan began a similar series in 1864, and in 1868 it published a compilation of the series as Five Hundred and Seven Mechanical Movements, "embracing all those which are most important in dynamics, hydraulics, hydrostatics, pneumatics, steam engines . . and miscellaneous ; ^"^ This collection went through many editions; it was last revived in 1943 under the title "'George Escol Sellers in American Machinist, July 12, 1884, vol. 7, p. 3. '^'^North-American Review and Miscettaneous Journal, 1819, new sen, vol. 8, pp. 13-15, 25. ^^ Henry T. Brown, Five Hundred and Seven Mechanical Movements, New York, 1868. A Manual of Mechanical Movements. This 1943 edition included photographs of kinematic models.'"' Many readers are already well acquainted with the three volumes of Ingenious Mechanisms jor Designers and Inventors,^'''^ a work that resulted from a contest, an- nounced by Machinery (vol. 33, p. 405) in 1927, in which seven prizes were offered for the seven best articles on unpublished ingenious mechanisms. There was an interesting class of United States pat- ents called "Mechanical Movements" that comprised scores of patents issued throughout the middle decades of the 19th century. A sampling of these patents shows that while some were for devices used in partic- ular machines—such as a ratchet
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