Steam engines, a thorough and practical presentation of modern steam engine practice (1920)
Ludy, Llewellyn V., 1875-, American Technical Society · Chicago, American technical society · leaf 18
-der condensed the steamand formed a vacuum. This left the pistonwith atmospheric pressure above and very little pressure below(a partial vacuum), so it was forced down and the pump rodraised again. Steam could again be admitted to the cylinder; thepump rod would fall; and the process could be… … Pig. 2. Pulsometer 4 STEAM ENGINES around the piston, or air from leaking In where steam was beingcondensed, it was customary to keep a jet of water playing on thetop of the piston. One great trouble with all of these engines was that some onewas required to open and close the cocks, and boys were…
Steam-engines
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