Notes and examples in mechanics; with an appendix on the graphical statics of mechanism; (1903)
Church, Irving P. (Irving Porter), 1851-1931 · New York, J. Wiley & sons; [etc., etc.] · leaf 83
pposing the boiler-gauge to read80 lbs. per sq. in. (above one atmos-phere) and the total length of stroke,Sn = OJV, to be 16 inches, with cut-off at one third stroke (so that s^ = iof 16 in.), the diameter of pistonbeing 10 inches ; how great a weightG can be raised if the (circular) pis-ton is to… … Fig. 87a. From p. 62 we liave the equation <S...[l + l0g,(j)]=^5„+^.„, (2) now to be solved for G. 5^ = f ft.; ^^ = |^ ft.^ and hence theratio Sn : s, = 3. The area of piston = nr = ^- x (5) = 78.57sq. in. .. Air-pressure above piston, = ^, = constant = 78.57 X (15lbs. per sq. in.) = 1178 lbs.;…
