Patent GB-642336-A (GB)
Title: Improvements in or relating to railway vehicle bodies
IPC: B61D17/12
Filed: 1948-01-27
Abstract: 642,336. Railway-vehicle bodies. BUDD CO. Jan. 27, 1948, No. 2401. Convention date, March 15, 1947. [Class 103(iv)] A railway car consists of underframe, side wall and roof structures, the underframe structure supporting. at least one section of the floor at a normal first level and another section at a lower second level, the roof structure including an observation dome section in the region of the second floor level, the stresses from the floor and the roof sections adjoining the second level floor section and the dome section being in part transmitted into the side wall structures by reinforcements, further longitudinal reinforcements being provided on said side wall structures to extend through the region of the second floor level and of the dome and for a certain distance beyond said region. The car comprises an underframe U, side wall units S, a roof unit R, a dome unit D, a non-vestibule end wall N and a vestibule end wall V. The dome compartment is separated from the end compartments by structural partitions 29, 30 and is divided into two decks of which the upper has a floor, 28 provided with a central well 157, Fig. 4, connected with the rear compartment by central steps 31 and provided with seats 42 similar to the seats 41 in the forward and rear lower compartments. The lower deck of the dome compartment is sub-divided into baggage and .rest rooms, and a side aisle 34 to interconnect the end compartments. To ensure adequate head room in the dome compartments the floor 27 of the lower compartment is lowered with respect to the adjoining floors 25, 26, and in order to accommodate this change of levels and to ensure a satisfactory load transference from one end of the car to the other, the underframe comprises a central sill member formed from fluted channels 50, 51, Fig. 4, interconnected by a plate 52. The members 50, 51 extend between the walls N and 29 and V and 30 respectively whereas the plate 52 extends from end to end of the car and has attached to its undersurface in way of the dome compartment and in overlapping relationship with members 50, 51 a further sill section of depth smaller than the members 50 and comprising channels 54, 55 connected by a plate 56, and attached at their ends to the members 50. 51 by angles 58, Fig. 1. The underframe further comprises side sills 76 reinforced in way of the dome compartment by additional resting members (not shown) and a skirt comprising profiles 85, a channel section rail 87 and plating 88. In addition to the transverse reinforcement provided by bolster beams 44 and a cross bearer 57 (Fig. 1) the centre sill is further interconnected with the side sills by flanged floor panels 60 which fit into each side sill 76 and are connected to the top flanges of the sill members 50. In way of the dome compartment, floor panels 63 fit between the skirt channel rails 87 and the centre sill channels 54 and at the positions of the bulkheads 29, 30 the floor panels 60 are secured to the panels 63 by shear webs to which are attached downwardly extending webs 66, 67 braced by angles 68 and arranged to support air or water tanks 94. The side and roof panels and dome structure are of normal construction and the dome carlines 135 are bifurcated at the top centre line to form a heating and ventilating duct 146.