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 184
he revolution of the engine. Infact the diagram traced upon the paper is the compoundresult of two concurrent movements. First, that of thepencil caused by the pressure of the steam againstthe indicator piston; second, that of the paper drumcaused by, and coincident with, the motion of theengine… … CROSBY INDI-CATOR SPRING. 172 ENGINEERING indicator is closed, both ends of the indicator cylinderare open to atmospheric pressure, and the pencil thenstands at its neutral position. If now the pencil isheld against the paper and the drum rotated either byhand or by connecting it with the cord, a…
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