GB352497A - System for reducing shocks transmitted through a resilient system to a movable body bearing thereon - Google Patents

Abstract

352,497. Hydraulic springs. AMMIRANDOLI, D. and BALDI, C., 228, Via Silvestri, Prato, Toscana, Florence, Italy. April 8, 1930, No. 11207. Convention date, April 11, 1929. [Class 108 (iii).] In vehicle suspension or other shockabsorbing systems in which a spring and a liquid are in series, the arrangement is such that when a thrust is transmitted through the spring to the liquid, the liquid yields by flowing into another vessel the volume of which varies in an inverse manner, after which the parts gradually assume their previous relative positions. In the construction shown in Fig. 1, the body d is supported by a piston a on liquid contained in the cylinder b which is in one with the lower cylinder f, the two cylinders being separated by a partition c. The axle k supports the vehicle through the piston h acting on the lower end of the helical spring m. The upper cylinder b and the lower cylinder f are connected by pipes n. When the axle rises suddenly the spring m is compressed and raises the partition c together with the cylinders b, f so that liquid flows from the upper to the lower cylinder through the pipes n, and the piston a and body thus follow the upward movement of the axle very slowly. In a modification the lower cylinder is of larger diameter than the upper and the arrangement of the spring is such that the connecting pipes may be dispensed with. In a further modification a laminated spring is employed, as shown in Fig. 3. Two cylinders b are connected to the ends of the spring and the single cylinder f of larger diameter is rigidly connected to the end cylinders by pipes n while its piston h moves with the axle.