Appleton's dictionary of machines, mechanics, engine-work, and engineering (1869)
New York, Appleton · leaf 925
e manner to be presently explained, and two laying-plates 11 at top of all. The undermostring R1, is connected by a series of cranks Gee, with the second ring R2, and R2 with the third ring R3,by straight vertical rods s s. The centre crank C is stationary, and stepped by its short arm in a… … to the ring R1, it carries round with it the ring R2 by means of the side-cranks ec—that is to say, theside-cranks ec, which may be called live cranks, are made to revolve round the centre or dead cranKC; while the ring R2 in its turn imparts, through the medium of the vertical rods ss, a…
Mechanical engineering
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