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“In the forcing-pump atmospheric pressure plays but a small part. There is no valve in the piston c, but the water raised through the suction-pipe a, and the valve g, is forced by each depression of the piston up through the pipe e e, which is furnished with a valve to prevent the return of the fluid.” — Wells, 1857


Fluid Pumps


David A. Wells The Science of Common Things; A Familiar Explanation of the First Principles of Physical Science100


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