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Scientific American, Vol. 38, No. 9 (1878) (1878)

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An illustration from Scientific American, Vol. 38, No. 9 (1878), 1878, leaf 0
per- I, is closed and the pump set in operation to force in water ations of the press, its duty being simply to restore the water pumps thus continue doing no work, and hence taking little or no power from the driving engine, until the pressure in in the accumulators which has been used in forcing…

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