. American engineer and railroad journal . et is so tough lliat it will notbreak when it hammers under full load and at full s]iee(lagainst frogs and crossincs. The first cost of the manganese-steel wlieel, which is a sim-ple casting, is much below that of the composite wheel. Thecost of the wheelage, or wheel service, consists mainly of thefirst cost of the wlieel and of the interest on lliis lirst which I have made, but with which 1 will not tonight trouble you, show that the manganese-steel wheel islikely to be much cheaper per 1,000 miles run than the com-posite wiieel. I
. American engineer and railroad journal . et is so tough lliat it will notbreak when it hammers under full load and at full s]iee(lagainst frogs and crossincs. The first cost of the manganese-steel wlieel, which is a sim-ple casting, is much below that of the composite wheel. Thecost of the wheelage, or wheel service, consists mainly of thefirst cost of the wlieel and of the interest on lliis lirst which I have made, but with which 1 will not tonight trouble you, show that the manganese-steel wheel islikely to be much cheaper per 1,000 miles run than the com-posite wiieel. I believe that the wheel is not only incom-parably safer than the chilled east-iron wheel, but, all thingsconsidered, really decidedly safer than the com]K)site wheel.* Its eiiormons and extremely constant electric resistance,coupled with its eheai>ness, as compared with tierman silverand platinoid, should give manganese steel important api)lica-tions in electrical engineering. PONTOONING THROUGH THECANALS. ST. LAWRENCE. TUG WITH ATTACllliD. Tnenly-two manganese-steel wheels, :30 in. in diameter, onone of the New England railroads, ran from 131,499 to 1SS,179miles, or on an average of H;);5 miles before the first turning. This is nearly seven times the average mileage of chilled cast-iron wheels on this particular road, where the conditions arevery trying owing to frequent lheeonse(|Ucnt frcf|Ucntappliealion of the brake. The mileage of these manganese-steel wheels is nearly times the reported average life () of cast-iron wheels on the Hoston it Albany general belief is that chilled cast-iron passenger wheels, 33in. in diameter, run on an average 60,000 miles before removal,which is about one-third the mileage of these manganese-steelwheels before their first turning. The mileage of composite or steel-tired wheels is muchgreater than that of chilled cast-iron wlieels, though the steeltire of the comiiosite
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
