New York [etc.] Simmons-Boardman Pub. Co. [etc.] · leaf 53
initial spring C, driving back the wedge block0, thereby forcing apart the wedge plates JTandcompressing the interlocked sets of friction plates Pand P. Any further inward movement of the draw-head results In lorcing the tightly compressed fric-tion plates P together in a vertical direction, at…
Railroads · Railroad cars
Internet Archive · Carnegie Library of Pittsburgh · Public Domain Mark 1.0. Free to use for anything.
