The steam engine familiarly explained and illustrated; with an historical sketch of its invention and progressive improvement; (1836)
Lardner, Dionysius, 1793-1859, Renwick, James, 1790-1863. [from old catalog] · Philadelphia, E. L. Carey & A. Hart · leaf 172
its piston, whichis solid and without a valve : f is the pipe from the conden-ser to the air-pump, through which the condensed steam isdrawn off through the valve a on the ascent of the piston,and on the descent, this is forced through a tube into a hotwell, h, for the purpose of feeding the boiler… … Pl.X. JTtg. -J-6\
Steam-engines
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
