Twentieth century hand-book for steam engineers and electricians, with questions and answers .. (1905)
Swingle, C. F. [from old catalog], Horstmann, Henry Charles, 1858- [from old catalog], Tousley, Victor Hugo, 1875- [from old catalog] · Chicago, F. J. Drake & co. · leaf 225
FIGURE 56. tically perfect. The boiler pressure was 68 lbs. andthe spring used was a No. 40. The steam consump-tion was reduced to 22 lbs. per I. H. P. per hour ascompared to 33.lbs. in Fig. 54. Figs. 56 and 57 represent diagrams from engine No.3, which w£s the same size as No. 1, viz., 24x48 in., … FIGURE 57. and running at 72 R. P. M. The original diagram,Fig. 56, shows too little lead on both ends, but espe-cially on the top. There is also lack of compressionon the bottom end. The boiler pressure was 60 lbs.and the scale of spring 40. Fig. 57, taken after the DIAGRAM ANALYSIS 21.3 necessary…
