The Westinghouse Friction Draft Gear
År: 1900
Forlag: Barlett & Company, The Orr Press
Sted: New York
Sider: 28
UDK: 625.201 Jern
Built by The Westinghouse Air Brake Co., Pittsburgh, Pensylvania, U.S.A.
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pression. The area DEC represents the work done upon the spring during compression, and the
narrow, heavily shaded area DE represents the amount of energy dissipated in frictional heating
by the spring. In this instance the proportion of energy dissipated is only 7 per cent., as against
80 per cent, of the total energy in the case of the Westinghouse gear.
The diagram also shows in a very striking manner the maximum capacities of the two types
of gear, the ordinary gear being shown at its maximum of 20,000 pounds, while the capacity of the
Westinghouse gear is not exhausted until a compression of 140,000 pounds and over has been
reached.
CM