Twentieth century hand-book for steam engineers and electricians, with questions and answers .. . figure 68. continuous service for nearly seventeen years when theauthor was called upon to indicate them and adjustthe valves. A diagram taken at the same time fromthe mate of this engine was very nearly an exactcounter part of Fig. 68. The horse power, as shownby Fig. 68, was 248, and the steam per I. H. P. perhour was lbs. The vacuum gauge showed 27 a 50 spring was used. Figs. 69 and 70 are from an old Fishkill corlissengine 16 x 42 in., to which the author applied theindicator after
Twentieth century hand-book for steam engineers and electricians, with questions and answers .. . figure 68. continuous service for nearly seventeen years when theauthor was called upon to indicate them and adjustthe valves. A diagram taken at the same time fromthe mate of this engine was very nearly an exactcounter part of Fig. 68. The horse power, as shownby Fig. 68, was 248, and the steam per I. H. P. perhour was lbs. The vacuum gauge showed 27 a 50 spring was used. Figs. 69 and 70 are from an old Fishkill corlissengine 16 x 42 in., to which the author applied theindicator after he had set the valves, according to theordinary rules for valve setting, by the marks placed DIAGRAM ANALYSIS 223 on the ends of the valves and valve chests. Thesediagrams are introduced especially for the purpose ofshowing the need of exercising the greatest of care toprevent dirt or grit of any kind from getting into the. FIGURE 69. indicator cylinder. After the indicator pipes had beenblown out sufficiently, as it was thought, the indicator,which was a thoroughly reliable instrument, wasattached and diagram Fig. 69 was obtained. Itshowed the valve adjustment to be very nearly correct,but the perfectly straight steam lines and the sharp
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