Common Metalic Pump

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“This consists of a brass or iron barrel, A, containing at its upper part a hollow piston and valve opening upward. Below this there is another valve, also opening upward. The pipe and stockcock C, are for the purpose of letting the water from the barrel to the tube, which descends into the well.” -Comstock 1850


Fluid Pumps


J. L. Comstock A System of Natural Philosophy: Principles of Mechanics (: Pratt, Woodford, and Company, 1850) 158


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