. Railway mechanical engineer . LDAn — THDUSANI] POUNDS Fig, 11 plied and release load lines, favoring slightly the release is called to the fact that the height of the springs wasmeasured when the car was at rest. Doubtless when the car isin motion, the springs do not have the opportunity to adjustthemselves that they do during the gradual retardation beforethe car stops, in which case the average running height probablyapproaches nearer to the release load curve. While the datarelative to the service height of locomotive driving, trailing andtender truck springs is not complet
. Railway mechanical engineer . LDAn — THDUSANI] POUNDS Fig, 11 plied and release load lines, favoring slightly the release is called to the fact that the height of the springs wasmeasured when the car was at rest. Doubtless when the car isin motion, the springs do not have the opportunity to adjustthemselves that they do during the gradual retardation beforethe car stops, in which case the average running height probablyapproaches nearer to the release load curve. While the datarelative to the service height of locomotive driving, trailing andtender truck springs is not complete, personal observation wouldseem to warrant the conclusion that these springs generally ridecloser to the release load curve. PERM.\XENT SET Early in the article the fact was brought out that the freeheight of a spring is often reduced by. the applicaton and re-moval of the initial load. .Assuming that the readings are freefrom error and neglecting the time effect, this reduction, oftenreferred to as the initial set. may be
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
