A system of natural philosophy, designed for the use of schools and academies (1845)
Moffat, J[ohn] M. [from old catalog] · Philadelphia, E. C. Biddle · leaf 321
d as to have produced carriages worked bysteam in which persons may travel at least as safely as in coachesdrawn by horses, and with a degree of velocity incomparablygreater. How much of the force of high steam is lost by the resistance of theair to its final expulsion from the cylinder ? What… … Oliver evanss steam engine. 319 116. The high-pressure steam engine invented by Oliver Evansof Philadelphia, in 1784,* and for which he obtained a patent fromthe.state of Maryland in 1787, (the confederated states not havingadopted a general system of patents,) is the original of all thosepowerful…
Physics
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