Modern locomotive engineering, with questions and answers .. (1913)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & co · leaf 211
l piston, and when the cockconnecting the cylinders of the engine and indicatoris closed, both ends of the indicator cylinder are opento atmospheric pressure, and the pencil then stands atits neutral position. If now the pencil is held againstthe paper and the drum rotated either by hand or… … 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-
Locomotives
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