. The car wheel; giving the results of a series of investigations . 34-lN. STREET-CAR WHEEL FOR PENNSYLVANIA AND MAHONING VALLEYTRACTION CO. The solid forged and rolled steel wheel was origi-nally developed to meet the severe requirements ofservice under high capacity freight cars and it is inthis field that it has the widest possibilities of appli-cation. That there is a demand for these wheels isshown by the fact that more than 150,000 are nowin use, 55,000 of them in service under 100,000 cars, and the number is steadily increasing. It is difficult to make an estimate of the mi
. The car wheel; giving the results of a series of investigations . 34-lN. STREET-CAR WHEEL FOR PENNSYLVANIA AND MAHONING VALLEYTRACTION CO. The solid forged and rolled steel wheel was origi-nally developed to meet the severe requirements ofservice under high capacity freight cars and it is inthis field that it has the widest possibilities of appli-cation. That there is a demand for these wheels isshown by the fact that more than 150,000 are nowin use, 55,000 of them in service under 100,000 cars, and the number is steadily increasing. It is difficult to make an estimate of the mileagecost of freight car wheels because of the incompleterecords usually kept. From the best statistics avail-able, however, it appears that the mileage obtainedfrom cast iron wheels under 100,000 lbs. capacitycars is between 25,000 miles and 30,000 miles. 138. 3;3-lN. STEEL WHEEL. ■J4^0M.
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Keywords: ., bookaut, bookcentury1900, bookdecade1900, booksubjectrailroadcars
