Patent GB-1095598-A (GB)
Title: A Laminated Support Fixture for Carrying a Load Subject to Dynamic Movement.
Inventor: WILLIAM LLOYD HINKS,
IPC: F16C27/06
Filed: 1964-12-01
Abstract: 1,095,598. Bearings; resilient mountings. W. L. HINKS. Dec. 1, 1964, No. 48704/64. Headings F2A and F2S. A shaft 78, Fig. 7, is supported in a casing 77 by a laminated annular bearing member, or so-called " support fixture," which includes alternate rings 71e, 71m made of an elastomeric material e.g. rubber, and a substantially incompressible solid material e.g. metal, respectively, and also includes a plurality of rings 72 having flanges 73, 74 abutting annular surfaces 75, 76 to prevent buckling or lateral deflection of the bearing member by radially orientated force 79 while allowing circumferential displacement of the rings 71m, 72 relative to one another when torsional forces 79a are applied to the shaft in opposition to torsional resistance effected by the rings 71e, the radially inner and outer peripheral surfaces of the bearing member being fixed with respect to the shaft and the easing by either friction or bonding. Balls (69), Fig. 6 (not shown), may be lodged between the flanges and the abutting surfaces to minimize friction. Another embodiment of the bearing member, Fig. 4, includes a plurality of rings 41e, 41m that are made of the aforesaid materials and lodged between annular plates 42, 43, buckling due to axial forces 44, 45 being prevented by a lubricated resilient sleeve 47 containing metallic rings or bands 48 and bonded to a metallic sleeve 49. Slots 42a, 43a are formed in the said plates and sleeves to facilitate the application of torsional forces to bearing member and alignment of the various components during assembly thereof. In a modification, Fig. 5 (not shown), buckling of the bearing member (50) is prevented by a plurality of strips (56) constituting either coaxial rings or a helix, these strips being situated adjacent the radiallyinnermost surface of the bearing member and bonded thereto. The strips (56) may be made of P.T.F.E. to minimize friction when they slide upon the adjacent surface of an inner supporting member (57) containing a bore (58). A further embodiment of the bearing member, Fig. 8, includes a plurality of rings 81e, 81m made of the aforesaid materials and situated between annular plates 82, 83, buckling due to axial and/or radial forces acting upon said plates being prevented by a plate 86 engaging with a plurality of circumferentially disposed bodies, or so-called " beams," 87 that are held together by rings 88 within a non-rigid housing 89a. Buckling is also prevented by balls 89 lodged between the bodies 87 and flanges on the rings 81m. In a modification, Fig. 9 (not shown), the bearing member is somewhat similar to that shown in Fig. 4 and is intended to carry an axial load only, buckling being prevented by a plurality of " beams " i.e. rods, (95) embedded in a pair of rubber sleeves (96), which beams engage with an annular plate (94) that is similar to the plate 86 shown in Fig. 8. In another modification, Fig. 10 (not shown), buckling of the bearing member (100) due to axial forces (104) applied thereto is prevented by flanges (102a, 105a) on metallic plates within the bearing member engaging with rings (107a) made of P.T.F.E. and supported by a rubber sleeve (107), which contains " beams " (106) engaging with a further plate (105b) that forms a part of the bearing member. A still further embodiment of the bearing- member, Fig. 11 (not shown), is somewhat similar to the embodiment according to Fig. 4, buckling being prevented by annular plates (113) lodged within the bearing member and having flanges (116) thereon overlapping one another, which may be lubricated by P.T.F.E. In a first modification, Fig. 12 (not shown), oblique inner and outer flanges (123, 124) on annular plates (122) within the bearing member are bonded to resilient rings (125) therebetween, which rings contain stiffening rings (126). A second modification, Fig. 13 (not shown) includes annular plates (130, 133) on either side of the bearing member having flanges (134) thereon that engage with flanges on overlapping rings (135) situated radially outwardly of the bearing member. In a third modification, Fig. 14 (not shown), buckling of the bearing member (140) is prevented by rings (146) made of P.T.F.E. lodged between flanges (141a, 145a, 147, 148) on annular plates (141, 142, 145, 147c, 148c) in the bearing member, the plates (147c, 148c) being attached to each other e.g. by welding.