Modern instruments and methods of calculation : a handbook of the Napier Tercentenary Exhibition (1914)
Horsburg, E. M. (Ellice Martin), Napier Tercentenary Exhibition (1914 : Edinburgh, Scotalnd) · London : G. Bell · leaf 133
M vw Fig. 42.—(| actual size.) Appearance of the whole machine from above after removal of the cover.The proportion lever and all the slot and carriage axles except two are omitted. ten-toothed wheels rx and r2. Under these are placed on the beam b (fig. 44)broader cog wheels r3, which can be… … &^xmx Fig. 43.—(£ actual size.) Side view (Section I I of fig. 42) to illustrate the reversing process. carries two discs u, on which two rollers, the ends of a lever, move in sucha manner that during a turn of the crank they execute an entirely constrainedto-and-fro motion which is…
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