Kirkman, Marshall M. (Marshall Monroe), 1842-1921 · New York and Chicago, The World railway publishing company · leaf 415
compression line. The slightest irregularities in the steam distribu-tion of a valve may thus be readily detected by takingan indicator card at a not too great speed. It is customary to take an indicator diagram fromeach end of the cylinder, upon the same card. Thetaking of the second card follows… … The diagram, Fig. 2, shows unequal steam distri-bution in the two ends of the cylinder. Looking atcard H we can see that the exhaust port closes tooearly and compression exceeds the steam chest pres-sure (as shown by the loop), which causes the valveto raise off its seat. This card of itself would…
Locomotives
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