Patent GB-714580-A (GB)
Title: Improvements in or relating to a mounting for an engine
IPC: B61C9/00
Filed: 1950-10-20
Abstract: 714,580. Mounting motors. BUDD CO. Oct. 20, 1950 [Oct. 26, 1949], No. 25583/50. Class 79(3) An engine mounting, particularly for an engine mounted beneath the floor of a railway car, comprises a pair of spaced disconnectible supports at the output shaft end, and at the other end a single support which permits of longitudinal swinging movement of the engine. The single support is preferably arranged so that it can be swung clear of the engine for removal of the latter. All supports are resilient and arranged so that the engine cannot fall should the resilient pads fail. As shown in Fig. 1, the engine 15 is mounted on its side beneath the floor and drives the bogie wheels 18 through a telescopic cardan shaft 19 and detachable coupling 23, and drives the generator 26 and air compressor 31 through shaft 27 arid detachable coupling 29. All connections such as cooling water, exhaust, fuel electrical connections &c. are made quickly detachable. The engine is supported by means of a pair of laterally projecting plates 48, see also Figs. 5 and 8, and a single pivoted hanger shown in Figs. 9 and 10. The two plates 48, Figs. 5 and 8, are connected by bolts 50 to a yoke member 52, which is resiliently supported at each end by a pair of rubber mountings bonded to inner and outer metal plates 57. The inner plates 57 are located in corresponding recesses formed in the yoke 52, and the outer metal plates 57 are located in inverted U-shaped members 63 welded to the inner faces of the beam 60, which is of channel section. The outer plates 57 rest on a pair of beam plates 58 which are bolted to the bottom flanges of beam 60 and are suitably apertured for the passage of the depending ends of the yoke 52. The beam 60 is secured at its ends to the side sills 73 and at its centre to the main longitudinal member 69. Thus the two mountings take vertical and lateral movements in shear, and longitudinal thrusts in compression. Should the mountings fail, the horizontal portion of the yoke 52 is supported by the apertured beam plates 58 so that the engine is still held. The single swinging support, Figs. 9 and 10, comprises a stirrup 85 hung from pivots.86 and reinforced at its centre by a rib 92 and strap 93. As shown in Fig. 10, the engine casing has a projection 83, reinforced by a rib 84, which rests on a rubber support 89 having metal plates 91 bonded to its two faces, the metal plates being. located on the engine extension and stirrup respectively to prevent lateral movement thereof. When the engine is to be removed, a hook 100 is disengaged from aligned holes in the stirrup and a fixed plate 99, to permit the stirrup to be swung clear. The hook 100 has sufficient clearance in the holes to permit normal movement of the engine on its resilient mountings. In a modification. Fig. 11, the stirrup 85<SP>1</SP> is V-shaped, and two rubber mountings 89<SP>1</SP> are used. As shown in Figs. 2 (plan) and 12 (side elevation), a line MM passing through the rear rubber mounting and a point mid-way between the two front mountings passes vertically over and close to the centre of gravity of the engine.