... 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
Full view -