. Railway master mechanic [microform] . er the road withher. We know that whenthe tubes start to seep it isa question as to whetherthey will take up again orelse develop into the spurt-ing which is generally ahopeless stage. Obviouslythen, the thing to do is toprevent the start of ana-phase of leaking. Weknow that this start neveroccurs while the engine isworking hard, but devel-ops after we tip over thehill or are lying in side-tracks. Why ? Becausewhen the engine is workinghard we are burning coalat a rate which producesan intensity of temperaturewhich causes the junctionof the tubes with th
. Railway master mechanic [microform] . er the road withher. We know that whenthe tubes start to seep it isa question as to whetherthey will take up again orelse develop into the spurt-ing which is generally ahopeless stage. Obviouslythen, the thing to do is toprevent the start of ana-phase of leaking. Weknow that this start neveroccurs while the engine isworking hard, but devel-ops after we tip over thehill or are lying in side-tracks. Why ? Becausewhen the engine is workinghard we are burning coalat a rate which producesan intensity of temperaturewhich causes the junctionof the tubes with the tube sheet to expand (with badwater) to an extent which is beyond the limit fromwhich they will return (when the rate of combustiondrops) to the tightness of junction which existed be-fore.* Now having in mind this knowledge that thetube junctions with the sheet have become distortedwhile working the engine hard, to an extent whichrenders them liable to start leaking when the fireboxtemperature drops, because of a cessation of firing. Mr. David Wilcox,president of the delaware & hudson railroad Mr. Wilcox was born in Flatbush, N. Y., December 12, 1849, and hasremained a native of New York State all his life. He was graduated fromYale University in 1872, later studied law at the Columbia Law School andwas admitted to the bar in 1874. He was appointed general counsel of theD. & H in 1895, elected vice-president also in 1899 and president in May ofthe past year. when we tip over the hill, or go in a sidetrack, ouronly chance is obviously an endeavor to prevent anymaterial drop in the degree of firebox expansionreached while the engine was working hard. Thismeans that the firebox temperature should not be al-lowed to drop very much, which means that ideas offuel economy and aversions to popping must bedropped, the blower used freely and a good hot firekept up. Thats the whole secret of getting over theroad with a leaky engine—keep her hot in the firebox, all the time, at all po
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