Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics (1892)
Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 385
Fig. a.—Fire-escape. … Fio. 1.—Davis tlaiiKintr-ixii-liiie. in. diameter, and of any tluckness requireil witliin tliose limits f)f size. In (he center of themachine is a revolving jilate, driven by a powerful train of gears, aiul which is aiiajited toreceive and ilrive (lie former over which tlie head is formeij. At the…
Mechanical engineering
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