. American engineer and railroad journal . in width from 6 to 10 inches. The thickness variesfrom li to 2 inches on cars on which the floor is subjectedto only ordinary wear, such as box and other merchandis>3. diameter of the smaller ring isabout the minimum, whilethe lamest diameter is usually less than 13 inches, the sec-tion of the ring ranging from 1 to to 3 inches each builders use two coticcniric rings on both toji andbottom center plates, and their section is then about oneinch square. This is shown at 00, Figs. 3 and 5. Theother style of center plate cgnsista of a section
. American engineer and railroad journal . in width from 6 to 10 inches. The thickness variesfrom li to 2 inches on cars on which the floor is subjectedto only ordinary wear, such as box and other merchandis>3. diameter of the smaller ring isabout the minimum, whilethe lamest diameter is usually less than 13 inches, the sec-tion of the ring ranging from 1 to to 3 inches each builders use two coticcniric rings on both toji andbottom center plates, and their section is then about oneinch square. This is shown at 00, Figs. 3 and 5. Theother style of center plate cgnsista of a section of u sphereon the body plate, restini; In a itection of a hollow sphereof the same diameter, which is about 10 incheson the truckcenter plate. At the center there is usually a small rec-tangular ring on llie truck center plate lilting in a corre-Hponding recesa in Ihe upper one, which prevents displace-ment. The idea of the sphere is to allow a certain amountof arplateoordinarily have flanges or lips on the sidra which fitover the bolster and relieve the bolto of some of the wooden bolsters, especially when they are very
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
