Appleton's dictionary of machines, mechanics, engine-work, and engineering (1861)
Appleton, firm, publishers, New York. (1852, D. Appleton & Co.) · New York : D. Appleton · leaf 499
ighth of the capacity. The power requisite to work the air-pump is from one thirtieth to onefortieth of the power of the engine. The openings through the foot and delivery valves are made ofabout one fourth of the area of the pump. The internal diameter of the steam-pipe may be found bydividing the… … There are many other kinds of parallel motion besides those which we have mentioned, but there arenone of them of sufficient importance to justify a lengthened description. Fig. 1410 represents a spe-cies of parallel motion invented by Mr. James White, and published in his New Century of…
Mechanical engineering
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