Modern locomotive engineering, with questions and answers .. (1913)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & co · leaf 212
Crosby Indicator Spring THE INDICATOR 205 On a locomotive, the pencil, in tracing the diagram,will not, or at least should not, fall below the atmos- … Improved Tabor Indicator with Outside Connected SpringAsHCROFT Mfg. Co., N. Y. pheric line at any point, but will on the return stroketrace a line called the line of back pressure. As before stated, the length of stroke of the indi- 2o6 LOCOMOTIVE ENGINEERING cator piston, and the pencil movement…
Locomotives
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