. Railway mechanical engineer . nners, 50 ChurchStreet, New York. CAST STEEL TRUCK SIDE FRAME The drawing shows a recently developed cast steel truck sideframe wliich has been adopted by the Pennsylvania Railroad. The Strength of Autogenous Joints.—The strength of the jointproduced by autogenous welding, it is pointed out in a paper onhigh-temperature flames in metal working, has been a fruitfulsource of discussion in the application of the process, and manycontentions have been advanced as to the necessity of welds ofhighest tensile strength. It was early found that 100 per centwelds, or, in
. Railway mechanical engineer . nners, 50 ChurchStreet, New York. CAST STEEL TRUCK SIDE FRAME The drawing shows a recently developed cast steel truck sideframe wliich has been adopted by the Pennsylvania Railroad. The Strength of Autogenous Joints.—The strength of the jointproduced by autogenous welding, it is pointed out in a paper onhigh-temperature flames in metal working, has been a fruitfulsource of discussion in the application of the process, and manycontentions have been advanced as to the necessity of welds ofhighest tensile strength. It was early found that 100 per centwelds, or, in other words, those having a breaking strengthequivalent to that of the metal itself, could be produced, but thesacrifice of elongation and reduction of area materially lessenedthe apparent value of such welds. Present practice is directedtoward securing a weld of good tensile strength, as comparedwith the strength of the plate, with high ductility, since therebythe service conditions are better fulfilled. The growth in under-. The Benners Truck Side Frame principal feature of the design is the use of channel sections andchannels with re-entrant flanges instead of angle and I-sections. standing of such requirements has resulted in the production ofmethods which produce these results.—American Machinist. The shops aiul roundhouse of the Cliicaso &• Illinois Midlandat Taylorville. 111. were destroyed by fire November 4: loss $,oo6. The shops of the Norfolk Southern at Ncwbern. N. C, weredestroyed by fire on November 16; loss, $200,000. Two locomo-tives were damaged and several freight cars were burnt up. James J. Hill, in honor of whom a number of men havefounded a professorship of transportation in the Graduate Schoolof Business .\dministration, of Harvard University, has given tothe university $125,000, to be added to the like sum which wasgiven by the founders. The Nashville, Chattanooga & St. Louis reports that its ex-penses for clearing wrecks in the last fiscal year
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
