Canadian transportation & distribution management . 4,495 55,034,88260,143,014| |116,699,572|27127,543,687|31, ,724,397,202|029,072,279]. .4,159,61414,158,919 In addition to the revenue train mileage tfiven in columns 5, 6 and 7, there was a total special revenue train mileage of ,distributed over 20 railways. June, 1921. Railway Mechanical Methods and Devices. •293 Welding a Locomotive Cylinder and Grinding in Triple Valve Emer-Valve Chest. gency Check Valves. An oxy-acetylene welding job, per-formed in the Canadian National shops, is worthy of mention. A method of grinding
Canadian transportation & distribution management . 4,495 55,034,88260,143,014| |116,699,572|27127,543,687|31, ,724,397,202|029,072,279]. .4,159,61414,158,919 In addition to the revenue train mileage tfiven in columns 5, 6 and 7, there was a total special revenue train mileage of ,distributed over 20 railways. June, 1921. Railway Mechanical Methods and Devices. •293 Welding a Locomotive Cylinder and Grinding in Triple Valve Emer-Valve Chest. gency Check Valves. An oxy-acetylene welding job, per-formed in the Canadian National shops, is worthy of mention. A method of grinding in the emer-gency valves of triple valves as used inthe car department, air brake room, West compound, the case is held over the valve,so as to bring valve and seat together,and the air is turned on. The air, act-ing on the piston of the bell ringer, im-parts to the check valve a rotative mo-tion, back and forth, through about 60. Locomotive Cylinder and Valve Chest, before welding. This job, done some little time ago, in-volved very expert work, and the excel-lent results obtained were very gratify-ing. The weld was on a cylinder andvalve chest on locomotive 3310. The cyl-inder and valve chest were so brokenthat the various pieces were too smallfor straight welding work, so two plateswere made, one for the cylinder and onefor the valve chest, to fit the same afterthe edges of the breaks had been trim-med off evenly. These patches were Vdout at an angle of 45 deg. 1 in. back, forboth cylinder and valve chest, and werebolted temporarily in place. The entirecylinder and valve chest were heated toa cherry red color, and the weld wasthen made. After welding, the work wascompletely covered in dry sand, and givenample time to cool. The machine regu-larly used was then employed to boreout the valve chest and cylinder. When the locomotive was ready forthe test, the valve chest and cylinderwere filled with steam at work
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Keywords: ., bookcentury1900, bookdecade1920, bookpublisherdonmi, bookyear1921
