. Railway master mechanic [microform] . Plate 650-LB. Cast IronWheel for 8o,ooo-lb. Ca-pacity sand around the wheel. Theclean tread of the wheel mustform one side of the channelway, and the clean flange mustform as much of the bottom asits width will cover. The chan-ney way must then be filled upto the top with molten cast iron,which must be hot enough,when poured, so that the ringwhich is formed when metal iscold shall be solid or free fromwrinkles or layers. The timewhen the pouring ceases mustbe noted, and two minutes lateran examination of the wheelmust be made. If the whee
. Railway master mechanic [microform] . Plate 650-LB. Cast IronWheel for 8o,ooo-lb. Ca-pacity sand around the wheel. Theclean tread of the wheel mustform one side of the channelway, and the clean flange mustform as much of the bottom asits width will cover. The chan-ney way must then be filled upto the top with molten cast iron,which must be hot enough,when poured, so that the ringwhich is formed when metal iscold shall be solid or free fromwrinkles or layers. The timewhen the pouring ceases mustbe noted, and two minutes lateran examination of the wheelmust be made. If the wheel Isfound broken in pieces, or if anycrack in the plate extendsthrough or into the tread, theone hundred wheels representedby the tests will be rejected. 5. In case of the drop tests,should the test wheel break intwo or more pieces with lessthan the required number ofblows, then the second wheelshall be taken from the sam<;lot and similarly tested. If thesecond wheel stands the test Itshall be optional with the In- 284 RAILWAY MASTER MECHANIC July, 1904. spector whether he shall test the third wheel o
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