Appleton's dictionary of machines, mechanics, engine-work, and engineering : illustrated with four thousand engravings on wood ; in two volumes (1873)
D. Appleton and Company · New York : D. Appleton and Co. · leaf 574
ave in solidity, bv a modification of the section. The head and base are generally made too light, (see Fig. 3200.) It also allbriisa better base for its support on tlie bearings. Tlie U or bridge rail has the advantage of perpendicular sides to support the head, without )irojecti(/rissubject to be… … I \ t \ ) 6 inches long. 1 w But, after all the exertion of talent and still for the last twenty years to perfect a line of road withthe usual form of rails, it still remains very deficient in smoothness and stability at the joinings, and itis feared will continue to be so while the rails are made…
Mechanical engineering · Mechanics · Engineering
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