. American engineer and railroad journal . in one piece, in order to The rod centersare adjustable from 23 to 52 ins., the diameter of the attach-ing rods being assumed at 4 ins. The center of the largeram is adjustable vertically from 20 to 32 ins. The shippingweight of the machine is about 2,600 lbs. Chicagos Freight Tunnel.—About 45 miles of the tunnel isnow completed, several branches extending well beyond theriver on the north and west sides. The present equipmentconsists of 67 electric locomotives and 400 freight are being built an additional complement of
. American engineer and railroad journal . in one piece, in order to The rod centersare adjustable from 23 to 52 ins., the diameter of the attach-ing rods being assumed at 4 ins. The center of the largeram is adjustable vertically from 20 to 32 ins. The shippingweight of the machine is about 2,600 lbs. Chicagos Freight Tunnel.—About 45 miles of the tunnel isnow completed, several branches extending well beyond theriver on the north and west sides. The present equipmentconsists of 67 electric locomotives and 400 freight are being built an additional complement of 15 locomo-tives and 250 trucks. The company has 40 receiving stationsand is connected with nine regular railroads. The roads nowready for service are the Erie, Alton, Rock Island, Wabash,Santa Fe, Great Western, Monon, Baltimore and Ohio. Chicago,Milwaukee and St. Paul, and contracts have just been enteredinto between the tunnel company and the Chicago and EasternIllinois and the Illinois Central. AMERICAN ENGINEER AND RAILROAD NILES 600-TON HYDRAULIC WHEEL PRESS. 600-TON HYDRAULIC WHEEL PRESS. A few years ago a 300-ton wheel press was considered tobe sufficiently powerful for all purposes. With the introduc-tion of cast steel driving wheel centers and the use of largeraxles under the heavier power it soon proved unsatisfactory,and a more powerful machine was found necessary. Its suc-cessor, the 400-ton press, has also been found of insufficientcapacity on roads where cast steel wheel centers and axleswith wheel fits as large as 10 ins. in diameter are in use, andat the present time there is a demand for a much more power-ful machine. Inquiry among a dozen representative, shop superintendentsbrought out the following facts: Three of them advised thatthey considered a 400-ton press of sufficient capacity. On oneof these roads, however, the pressure required for pressingon driving wheels was considerably less than that used onother roads. Of the other two, one was fro
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
