GB300856A - Improvements in resilient supporting means for motor vehicles - Google Patents

Abstract

300,856. Brown, L. V. March 12, 1928. Springs, arrangement of; guiding vertical play.-Pneumatic springs for vehicles consist of outwardly bulging upper and lower flexible end-closures for a hollow vessel bearing against convex plates and connected respectively to the frame and axle in conjunction with various arrangements of radius arms. Upper and lower flexible diaphragms 15, 15<1>, Fig. 12, are clamped in an air tight manner to the ends of a rigid cylinder member 14 having an air supply valve 25. Each diaphragm is fixed at its centre to studs 20, 20<1> connected respectively to the frame and axle of a vehicle. The studs also carry rigid convex bearing surfaces 18, 18<1>. In a modification, an air-tight bag is provided within the cylinder so that the diaphragm need not be airtight. One or more springs may be provided in connection with each road wheel and may be disposed directly between the wheel and axle or at some intermediate point of a radius member 30, 32, Fig. 4, pivotally connecting the axle 27 and frame cross member 34. An arrangement of two radius members 30, 40, Fig. 9, may be provided to ensure that the lines joining successive positions of the pivots 39, 41 are always parallel. Various arrangements of radius members and of one or more pneumatic springs are shown.