Canadian foundryman (1917) . ed in the Dominion of Canada, andthe hundreds of thousands which havebeen shipped abroad and to Mexico andSouth America. 25,000,000 chilled ironwheels represent 8,000,000 tons ofmetal. Initial cost at $ per ton $200,000, Scrap value at $ ton 120,000, 25,000,000 wheels placed on a singletrack would make a solid line of wheels13,000 miles in length, over one-half ofthe circumference of the earth. If theywere placed on a single track withtreads feet apart they would encirclethe globe. If they could be piled ontop of each other, hub to hub,
Canadian foundryman (1917) . ed in the Dominion of Canada, andthe hundreds of thousands which havebeen shipped abroad and to Mexico andSouth America. 25,000,000 chilled ironwheels represent 8,000,000 tons ofmetal. Initial cost at $ per ton $200,000, Scrap value at $ ton 120,000, 25,000,000 wheels placed on a singletrack would make a solid line of wheels13,000 miles in length, over one-half ofthe circumference of the earth. If theywere placed on a single track withtreads feet apart they would encirclethe globe. If they could be piled ontop of each other, hub to hub, theywould reach a height of 2,760 miles. Toreplace 25,000,000 chilled iron wheelsupon the basis of 2,500,000 annual re-newals requires ten years. 800,000 tonsof metal are used annually to providefor 2,500,000 wheel renewals. From thereceipt of the metal to the finished wheelready for shipment, the metal must behandled about twelve times, so that toproduce wheels annually tons of metal are required and Canada, representing millions of invest-ed capital, and having a combined cap-acity of 20,000 car wheels per day, andhaving in mind the statistics to whichI have just called attention, we mustremember that the history of thedevelopment of the resources of NorthAmerica is a history of the developmentof the chilled iron car wheel, becausethe railways could not have reachedtheir present unparalleled developmentwithout the chilled iron car wheel, andit would require years and years ofpreparation to replace them with anyother substitute. What Chilled Iron Is Chilled iron means what the name im-plies and is the result of the chilling orsudden cooling of molten cast iron whenpoured against an iron ring, which ispart of the mould. Its discovery is saidto have been accidental. In an Englishfoundry, in the 18th century, the slop-ping over of a ladle of cast iron causedpart of its contents to come in contactwith cold iron lying on the floor of foun-dry. In breaking u
Size: 2175px × 1149px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., boo, bookcentury1900, bookdecade1910, bookidcanfoundryman1917toro
