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 74
base of the piston * As the calculation of the power of an engine depends on the numberof square inches in the section of the piston, it may be useful to give arule for computing the number of square inches in a circle. The follow-ing rule will always give the dimensions with sufficient… … Engr. by P.Mhverick.. SAVERY AND NEWCOMEN. 63 were 100 square inches, a pressure equal to I500lbs. wouldbe obtained. (38.) In order to accomplish this design, two things werenecessary: 1. To make a speedy and effectual vacuum belowthe piston in the descent; and 2. To contrive a counterpoisefor the…
Steam-engines
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