Renwick, James, 1790?-1863 · New York, G. & C. & H. Carvill · leaf 224
rity to Savarys, was constructed by Papin, for theElector of Hesse, in 1707. It differs in having a piston,working in the vessel into which the steam is alternatelyadmitted and condensed, and makes no important use ofthe pressure of the atmosphere. It appears that, even withthe aid of the… … a is the boiler, furnished with a safety valve 6, presseddown by a weight c, suspended from a lever. Water is in-troduced into the boiler through this valve. / is the forc-ing vessel, having an aperture at the top closed by thevalve g. A piston is placed in this vessel, having a socketinto which a…
Steam-engines
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