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 142
/Jnnm fy//,r Jul/;,- J-Ingr. fy JJclcrMatrrich. BOILER AND ITS APPENDAGES. 117 time the steam leaks between the cock and its case, and be-comes wasted, and tends to viliate the vacuum. These cocksare seldom used in condensing engines, except they be smallengines, but are frequently adopted in…
Steam-engines
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