The Civil engineer and architect's journal, scientific and railway gazette (1839)
London : [William Laxton] · leaf 87
tion will have been accomplished. Hence one complfte vibration of A will correspond to two revolu-tions of the crank. The only dilTerence betvfepn this crank and theordinary crank now actually used is its position; here the pivot aboutwhich the crank revolves is opposite the middle point of As… … that of fig. 1. In this case the multiplication is four times; the figurerequires but little explanation—for every course of A in its grooveB will move twice in its groove, for every course of B the crankC D revolves twice, and therefore four times for every stroke of A. We have said that it is…
Architecture · Civil engineering · Science
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