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Knight's Mechanical Encyclopedia (ed. Knight) 6 2 Browse Search
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m the labors of Braconnot in 1817, in separating oleine and stearine, followed by the researches of M. Chevreul. Prof. J. Lawrence Smith observed, in his address at the Priestly Centennial of Chemistry: M. Chevreul did not give to the world the resuss and also in the invention of the plaited wick, put the industry upon a firm footing. To quote farther from Professor J. Lawrence Smith:— A second advance in this industry was the use of sulphuric acid to decompose the fats; this plan origi1180, which shows a press for casting car-wheels.) Articles of household hardware are cast very sharply and handsomely by Smith's process, described on page 500. Steel-saw. One saw for cutting cold steel, used in Pittsburgh, is a disk of soft the pendant, and disconnect the pendant and main-spring, and then, by turning, regulate the hands. See also patents to Smith and Folsom, 1873; Rice and Gerry, 1868; Jacob, 1869; Himmer, 1869. Stench-traps. Stench-trap. A depression in a