Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880)
D. Appleton and Company, Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 168
engine of the United States Revenue steamer Rush.* Indicator diagrams are occasionally taken with the drum operated by connection to other parts ofthe engine than the main piston; for instance, to the cross-head of the slide-valve, or by a cord tocause the same to revolve coincidently with the main… … of the paper near the end of the stroke. Theyare not, however, considered of great practicalutility, and are obtained chiefly as exercises,puzzles, and curiosities. Indicator diagramshave been taken on a disk rotated back andforth by the engine, the measurements beingmade on radial ordinates.…
Mechanical engineering -- Dictionaries
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