Locomotive operation; a technical and practical analysis (1904)
Henderson, G. R. (George R.), b. 1861 · Chicago, Railway Age · leaf 228
ans^^entof the angle which the plane makes with the horizontal. Thnsin Fig. 64, if the weight of the body be represented by the linea b, the force tending to roll it down the incline will be repre-sented by b c, and the normal pressure upon the plane by a c. beThe coefficient of rolling will… … Still less will be the angle of elevation which is only necessaryto maintain the rolling when once started, and it Is the lattertliat would be the angle of dynamic rolling friction. In railway equipments, however, we always encounter jour-nal friction (if nothing greater), in addition to the…
Locomotives
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