New York [etc.] Simmons-Boardman Pub. Co. [etc.] · leaf 107
g abstract of them: There are three important qualities required ina brake beam; they are: strength, stiffness and elas-tic resilience, or springiness, that quality by whichthey may be able to resist shocks or blows, or sud-den jars. This latter quality of resilience is apt tobe opposed to that of…
Railroads · Railroad cars
Internet Archive · Carnegie Library of Pittsburgh · Public Domain Mark 1.0. Free to use for anything.
