. Railway age . ■ • Af/C/W Pf^Oi EL W^££L of the Schoen solid forged and rolled steel wheel were obtained,two from shelled-out wheels and one from a section of a wheel. Burned Metal of Schoen Steel Wheel. thai l)een [ burned in heating during cxauiiuation of the photographs of the two defective 67 to 70, shows that there are defects in the interior of themetal that were undoubtedly the cause of the shelling out butthere is no evidence of slag. The same characteristics are to benoted in Nos. 65 and 06 of the specimen that had been purposelyburned. The
. Railway age . ■ • Af/C/W Pf^Oi EL W^££L of the Schoen solid forged and rolled steel wheel were obtained,two from shelled-out wheels and one from a section of a wheel. Burned Metal of Schoen Steel Wheel. thai l)een [ burned in heating during cxauiiuation of the photographs of the two defective 67 to 70, shows that there are defects in the interior of themetal that were undoubtedly the cause of the shelling out butthere is no evidence of slag. The same characteristics are to benoted in Nos. 65 and 06 of the specimen that had been purposelyburned. The three specimens are examples of burned steel in whichthere is no evidence of slag. From these photographs it is evident, therefore, that the causeof the failure of all of the wheels and tires, except the Schoenwheels, was due to the presence of slag flaws occurring near thesurface of the tread. It nppears, therefore that there are at least two causes for theshelling out of steel tires and wheels, namely, slag flaws and over-heating. The commercial history of Western Canada begins in 1670, withthe charter by which Charles the Second constituted Prince Rupertand s
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Keywords: ., bookcentury1800, bookdecade1870, bookidrailwayage44, bookyear1870
