Railway rolling stock – Car framing and structure – Underframes
Patent
1975-05-29
1976-12-07
Spar, Robert J.
Railway rolling stock
Car framing and structure
Underframes
105396, B61F 100
Patent
active
039955648
ABSTRACT:
A railway flat car is provided including a center sill extending throughout the length of the car. A deck is attached to the center sill, and a side sill assembly is connected at opposite sides of the car to the deck. The side sill assembly includes an upper side sill member adjacent the deck and a depending vertically inclined first plate attached to the upper side sill member. The first plate is attached to crossbearers in the car in the main body of the car and at opposite end portions of the car. The first plate is foreshortened at least in the bolster-truck area of the car. The side sill assembly further includes on either side of the bolster-truck area of the car and through the bolster-truck area of the car, a second vertical plate transversely spaced from the first plate. At least one and preferably a pair of caps are attached to the lower portion of the second plate, preferably on opposite sides of the second plate. Because of the caps the neutral axis of the side sill assembly is located downwardly from the upper side sill member. The caps have a combined cross section sufficient to carry a significant portion of the longitudinal and vertical loads applied to the car in the bolster-truck area. Lower cover plates may be attached to the caps and the second plate and triangular end plates applied transversely to the first plate, second plate and the end of the caps. A significant portion of the longitudinal and vertical loads are transferred from the center sill outwardly to the side sill assemblies by crossbearers on one side of the bolster-truck area and are transferred back to the center sill on the other side of the bolster-truck area.
REFERENCES:
patent: 784665 (1905-03-01), Dodds
patent: 1946049 (1934-02-01), Weiskopf et al.
patent: 3427773 (1969-02-01), Kandall
patent: 3540384 (1970-11-01), Charles
patent: 3659724 (1972-05-01), Miller et al.
ACF Industries Incorporated
Cummings Henry W.
Reese Randolph A.
Spar Robert J.
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