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" ... top boom of the girder, on which it would slide or rest. The wheels that bear the weight, instead of being placed in the ordinary upright position, are fixed at an angle of about 45 degrees from the vertical plane ; the bearingface of the wheels being... "
The Meigs Railway: The Reason for Its Departures from the Ordinary Practice ... - Page 10
by Joe Vincent Meigs - 1887 - 182 pages
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Annual Report of the Board of Railroad Commissioners, Volume 18, Part 1887

Massachusetts. Board of Railroad Commissioners - Railroads - 1887
...plane ; the bearing face of the wheels being grooved to fit down upon the angle iron supporting rail on the upper corners of the lower boom of the track girder, so as to bear both downward aud inward on the rail. Each wheel has its own independent axle securely fixed in the iron jaw of the...
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Journal of the Franklin Institute

Electronic journals - 1887
...plane. The bearing face of the wheels is grooved! to fit down upon the angle-iron supporting rail, on the upper corners of the lower boom of the track...jaw of the truck, at right angles to the plane of the wheel. By this arrangement, the axle strains and the slipping of wheels on curves, so troublesome...
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