. American engineer . Fig. 21—Dies for IVlaking Wedge Bolts: Norfolk & Western. The first stroke upsets the end and the second flattens it outand punches the hole part way through it with the little knob onthe end of the die. The ends are bent to shape at the samebeat on a portable bulldozer that is located near the both ends are formed the grab iron is taken to a punchand the burrs are removed from the holes in the ends. With this. Fig. 22—Dies for IVlaking Grab iron Ends; Norfolk & Western. arrangement we are able to make a clean cut hole, which issometimes hard to do when punc
. American engineer . Fig. 21—Dies for IVlaking Wedge Bolts: Norfolk & Western. The first stroke upsets the end and the second flattens it outand punches the hole part way through it with the little knob onthe end of the die. The ends are bent to shape at the samebeat on a portable bulldozer that is located near the both ends are formed the grab iron is taken to a punchand the burrs are removed from the holes in the ends. With this. Fig. 22—Dies for IVlaking Grab iron Ends; Norfolk & Western. arrangement we are able to make a clean cut hole, which issometimes hard to do when punching iron while hot. OXY-ACETYLENE WELDING C. J. Fackler (Am. Car & Foundry Co., Jefifersonville, Ind.) :—We have the Davis-Bournonville system in our plant, and as anexperiment I had five welds made in Y^ in. and a Y^ in. round 454 AMERICAN ENGINEER. \oL. 86. No. 9. mild steel rods 18 in. long. These were bent on the anvil in theshape of a coil spring. I was not a bit careful as to how hardI hit them, as I wanted to break them if I could. There were 3fractures in the ^ in. piece, and one in the M in. piece which weredue to the carelessness on the part of the welder and not onaccount of the system. Two pieces of 2 in. .x 2 in. mild steelwere welded together, and after being brought up to a high heatit was drawn down to one-fourth of its original size. A slightfracture was found on one corner. I then tried bending it backand fo
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroa, bookyear1912
