Journal of the Franklin Institute; devoted to science and the mechanic arts (1826)
Franklin Institute (Philadelphia, Pa.) · Oxford, Eng. [etc.] Pergamon Press [etc.] · leaf 287
e pulley had set fast, andone side had been cut into by the rope, while in all, the way between 280 Consumption of Silk. the pulley was cut into deep grooves; evidently showing the existenceof great mechanical disadvantage, where the reverse would have beenhighly desirable. It occurred to me at the… … The annexed sketch represents the side of a ship, or dock, &c. &c.a a are two gun metal sheaves, turning on iron axes, and having moreend play than is usual. The sheaves rest upon a metal roller, R,which runs freely upon an iron axis. The roller should be closed in, about half way up, both…
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