. Railway mechanical engineer . tain. Xickel-chrnme carbon steel,oil tempered, was fmally used and had the following properties: Carbon per cent ManRanesc per cent Silicon per cent Nickel per cent Chrome per cent Ultimate tensile strength. 96,000 lb. per sq. in. Yield point 70,000 lb. per sq. in. LTltiinate compressive strength (assumed) 60,000 lb. per sq. in Elongation 25 per cent Reduction in area 62 per cent The piston and crosshead were made of carbon cast steel,carefully annealed, with an ultimate tensile strength of 80,000 of carbon cast steel, annealed
. Railway mechanical engineer . tain. Xickel-chrnme carbon steel,oil tempered, was fmally used and had the following properties: Carbon per cent ManRanesc per cent Silicon per cent Nickel per cent Chrome per cent Ultimate tensile strength. 96,000 lb. per sq. in. Yield point 70,000 lb. per sq. in. LTltiinate compressive strength (assumed) 60,000 lb. per sq. in Elongation 25 per cent Reduction in area 62 per cent The piston and crosshead were made of carbon cast steel,carefully annealed, with an ultimate tensile strength of 80,000 of carbon cast steel, annealed; a cast iron bull ring is piston rod is of nickel-chrome steel, hollow-bored and then Taiile IX—Saving in- Weight in Reciprocating Parts of BurlingtonJ-10-2 TvPE Locomotives Weight, in lb., of Carbon Nickel- WeightXanie of part steel parts chrome parts saved, lb. Piston and piston rod 945 72 Crosshead 706 526 180 Main rod 1,305 1,035 270 Side rod on front pin 150 117 33 Side rod on intermediate pin 482 352 130. Fig. 20—Burlington Piston Redesigned lb. per sq. in., yield point 50,000 lb. per sq. in., and elongation22 per cent. An idea of the appearance of these parts maybe obtained from Fig. 18. The results obtained in weight reduc-tion are given in Table IX. The counterweight bobs were omit-ted from the main drivers and the weight at the rail on the maindrivers was reduced from lb. to 62,000 lb. The mainwheels without any bobs were better balanced vertically by 35lb. The forward, back and intermediate wheels have very much Fig. 22—Pressed Steel Piston Side rod on main pin Side rod on intermediate pin. Side rod on back pin Main crank pin Eccentric crank 476150360 3ecf,bn Shoe 388111325 oil-tempered, and an extension piston rod is not used, so that acast iron wearing ring seemed necessary. Aridi., 1015 RAILWAY GAZETTK, M Rfl IA \ICA F. )ITIf)N 167 l\w iiisliiii sliiiwii in Iiy. 19 is iiol ;is linlil iis il (uiilii haveIn-eii cksigi
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
