. American engineer . Fig. 3—Dies for Trailer Spring Hanger and Trailer Hanger;Chicago & North Western. blade being placed in the top hammer holder and a punch in tlieheader holder. thousand ends can be trimmed and punchedin 9 hours. They are bent cold on a power punch, whicli makesa bend at every stroke of the machine. The dies are made ofcarbon steel and 60,000 grab irons have been made on one setof dies without dressing. The headers are made of piston rodsteel which is hardened about like carbon steel. They requiredressing quite often. G. Creedon (B. & A., West Springfield, Mass.):—Die
. American engineer . Fig. 3—Dies for Trailer Spring Hanger and Trailer Hanger;Chicago & North Western. blade being placed in the top hammer holder and a punch in tlieheader holder. thousand ends can be trimmed and punchedin 9 hours. They are bent cold on a power punch, whicli makesa bend at every stroke of the machine. The dies are made ofcarbon steel and 60,000 grab irons have been made on one setof dies without dressing. The headers are made of piston rodsteel which is hardened about like carbon steel. They requiredressing quite often. G. Creedon (B. & A., West Springfield, Mass.):—Dies usedon a 4-in. forging machine for making grease plugs for siderods are shown in Fig. 2. The plugs are made from Fig. 4—Dies for Forming Back Section of Side Rod; Chicago &North Western. square iron and the three operations are made with one heat. Thefirst stroke upsets the rod, the second punches it and the thirdcuts it ofif to the required length. The plugs have proved verysatisfactory and do not rattle ofT. T. E. Williams (C. & X. W., Chicago, 111.) :—Dies for ourlarge machines are nearly all made of cast iron. Those sub-jected to severe wear have steel inserts hammered from olddriving axles. The small dies are nearly all made of cast steel,with tool steel inserts put in where necessary. We made 140 equalizers for way-cars from common bar iron 2 in. x 3 in., bend-ing them on a bulldozer and upsetting them on a forgingmachine, for a total cost of $110. If these were hammered fromold axles, bent and finished at a lire, the cost would have beenat least $700. .Mlowing $150 for material and labor on the dies,this leaves a saving of $440. Fig. 3 shows a front trailer spring hanger luade
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroa, bookyear1912
