. American engineer . n Heads , 1912. :KIC.\.\ 375 STEEL TRUCK SIDE FRAMES A truck side frame for freight cars is built by tbe MurphyE(|uipnHnt Company, New York, which is made up entirely ofrolled steel. The various members may be cither welded orriveted together as shown in two of the accompanying illustra-tions. The oxy-acetylene process is used n the welded frameas well as for welding the gusset plate on the riveted \ rolled steel channel is bent to form part of the compression instead of three, as shown, and the gusset plates wereriveted instead
. American engineer . n Heads , 1912. :KIC.\.\ 375 STEEL TRUCK SIDE FRAMES A truck side frame for freight cars is built by tbe MurphyE(|uipnHnt Company, New York, which is made up entirely ofrolled steel. The various members may be cither welded orriveted together as shown in two of the accompanying illustra-tions. The oxy-acetylene process is used n the welded frameas well as for welding the gusset plate on the riveted \ rolled steel channel is bent to form part of the compression instead of three, as shown, and the gusset plates wereriveted instead of welded. The frame was supported the sameas it would lie in service, the journal being replaced by apair of steel clamps. The deflection was measured by a straightedge secured to the tension member and gage points at thejournal box supports. The frame was evenly loaded by meansof a hydraulic press and the accompanying table shows theresults obtained. The frame was then loaded to destruction .-md at Riveted Truck Side Frame. Welded Trttck Side Frame. member and the column guides, as shown in the drawing. Thisis reinforced by two gusset plates of ^^-in. material and a ^-in. co\er plate extending across above the bolster and com-pleting the compression member. .\1I the connections are eitherriveted or welded and in this way a solid frame of steel isformed without the use of bolts, nuts or castings. The columnguides have an enlarged opening at the base for the insertionof the bolster. These frames have been tested and the following is a reportof a test of a riveted side frame made for an 80,000-lb. capacitycar, a drawing of which is shown herewith. There is a slightdifference, however, between this frame and the one tested, inthat the tested frame had only two ■}4-in. rivets over the journal the f^-in. rivets over the journal box at rme side other connection remained intact but was apparently Tests nr Mcrpuv Truck Side Fr.\me. PermanentLoad. Defle
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroa, bookyear1912
