. Railway mechanical engineer . problems lie at our very feet. To solve the problem ofmore tons moved for less money a policy is called for. Thenthere is no escape from the necessity for a plan followed by aprogram for its execution. Cr.^cks ix Aluminum C.\stixgs.—In concluding a paper onCracks in .Aluminium Alloy Castings, R. J. Anderson, of Pitts-burgh, Pa., says that the melting temperatures should be low;overheating in the furnace should be avoided. Open-flame fur-naces should be run with a non-oxidizing atmosphere in order toavoid the formation of much aluminum oxide, and consequentlyoccl
. Railway mechanical engineer . problems lie at our very feet. To solve the problem ofmore tons moved for less money a policy is called for. Thenthere is no escape from the necessity for a plan followed by aprogram for its execution. Cr.^cks ix Aluminum C.\stixgs.—In concluding a paper onCracks in .Aluminium Alloy Castings, R. J. Anderson, of Pitts-burgh, Pa., says that the melting temperatures should be low;overheating in the furnace should be avoided. Open-flame fur-naces should be run with a non-oxidizing atmosphere in order toavoid the formation of much aluminum oxide, and consequentlyoccluded dross in the alloy. Skimming should be adequately andcarefully done and the melting practice should be conducted ascleanly as possible. Foundry floor sweepings should not hecharged into the furnaces unless sieved, and foreign materialsshould be kept out of the furnace charges. The pouring tempera-tures should be as low as is consistent with filling the mouldreadily with metal; high pouring temperatures should be ISO-Tan Shay Geared Locomotive for the Greenbriar, Cheat & Elk Shav Geared Locomotives for Mountain Roads 150-Ton Shay for Greenbriar, Cheat & Elk—HighSustained Tractive Effort Compared with. Mikados SHAY GEAREID locomotives are frequently used on pri-vate railroads in rough countrj-, for which service theyare particularly suited. The entire weight of theengine and tender being utilized for adhesion, the locomo-tives are adapted for climbing steep grades at relatively lowspeeds, while the arrangement of trucks and flexible coup-lings in the driving shaft provides a short rigid wheelbase,which enables the locomotive to round sharp cur\-es. per cent combined with 32 deg. curves. This combinationof grade and cur\e makes it necessary to have a locomotiveof high tractive effort, and at the same time wdth a veryflexible wheelbase. The freight hauled consists principally of logs, lumber,pulpwood and coal. These products are brought out overthis line to the m
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
