Cooke, Josiah Parsons, 1827-1894 · Boston, Little, Brown and Company · leaf 247
he large piston P, which ismade in the form of a plunger, touching the walls of the cylinderonly at the top, where it passes through a water-tight packing.On the top of this piston is a platform, which rises and falls with19* 222 CHEMICAL PHYSICS. it, and the articles to be submitted to pressiire… … rig. 218. structed exactly like the larger, and is moved up and down inthe cylinder by the pump-handle M. The small cylinder actsas a force-pump. It connects with a reservoir of water belowby means of a tube terminating with a rose, a. This tube isguarded by a valve, c, which allows the water to…
Matter · Heat
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