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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

Forcing-Pump

"In the forcing-pump atmospheric pressure plays but a small part. There is no valve in the piston c,…

"The common pump consists of a hollow tube, the lower part of which, descending into the water, is called the suction-pipe, and the upper part, b, the battel or cylinder; of a spout, s, at the top of the cylinder; of an air-tight priston, which works up and down in the cylinder; and of two valves, both opening upwards, one of which, g, is placed at the top of the suction-pipe, and the other, p, in the piston." — Wells, 1857

Pump

"The common pump consists of a hollow tube, the lower part of which, descending into the water, is called…