GB586608A - Improvements in and relating to resilient mountings for machinery, instruments and the like - Google Patents

Abstract

586,608. Resilient mountings. NORMAN, J. W. LA F., and WRIGHT, C. S. Aug. 21, 1944, No. 15970. [Class 108 (iii)] A resilient mounting for machinery, instruments &c. comprises a weight-supporting part consisting of a substantially frusto-conical annular or recessed rubber or like, block c having main bearing surfaces c<1> arranged out of alignment axially and transversely and a secondary bearing surface c<2> adapted to bear against a supporting surface e under loads greater than normal, the surface c<2> being in the form of a sharplydefined frusto-conical portion of the outer surface of the block c adjacent the smaller end thereof and of greater divergence than the remainder of the outer surface. As shown, a machine b is supported on a base a by the block c, the bearing surfaces c<1> of which are bonded to a flanged metal frame d and to a centrallyspigoted bearing plate e through which extends a securing bolt f. A flanged rubber shock ring g, which may have a retaining plate h, may be mounted on a sleeve i abutting the spigot-of the plate e. The block c is stressed mainly in shear by axial load until the surface c<2> encounters the bearing plate e when the rubber is stressed in compression. Under normal axial load the spigot of the plate e enters the central aperture of the frame d so that the block resists heavy lateral loads by compression as well as shear. Lateral shock loads are also resisted by the rubber ring g which is compressed when it encounters the surrounding wall of the hole -in the machine b or base a, and the flange g<1> of the ring is compressed by axial loads in a direction opposite to that of the normal load.