Twentieth century handbook for steam engineers and electricians, with questions and answers; a practical nontechnical treatise .. (1916)
Swingle, Calvin F. (Calvin Franklin), b. 1846 · Chicago, F.J. Drake & company · leaf 500
n. At the time Fig. 175 was taken the boiler pressure was105 lbs., but it was increased a few months later to 110 lbs.,as was the load also, when Figs. 176 and 177 were taken. These diagrams are fairly good working cards, but thereare some defects which it might be well to point out. Eef erring to… … Fig. 175 This decrepancy is caused by insufficient lead on thehead end, plainly shown by the inclination inward of theadmission line, and the rounded corner at s. 488 Steam Engineering The compression is excessive, especially on the head end,as indicated by the curve at L.
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