From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Proposing a test rig for hydraulic shock dampers to compare gland packing efficiency.
| Identifier | ExFiles\Box 55\3\ Scan087 | |
| Date | 4th March 1926 guessed | |
| To RHC. {R. H. Coverley - Production Engineer} from Hs {Lord Ernest Hives - Chair} /Rn. {Mr Robinson} X235 [Text associated with sketch] LEVER SHAFT NOT CONNECTED INTERNALLY TO LEVER THEN CAN BE ROTATED TO REPRODUCE SHOCK ABSORBER MOVEMENTS PRESSURE GAUGE TYRE VALVE. PUMP UP TO REQUIRED PRESSURE LEVER MADE DETACHABLE FROM SHAFT IN THESE TESTS TO FACILITATE ASSEMBLING OF GLAND. FILL SHOCK ABSORBER WITH LARD OIL OR OTHER OIL OF LOW VISCOSITY RE HYDRAULIC SHOCK DAMPERS. We suggest that in order to compare different types of packings and the efficiency of a gland when it is fitted up, a pneumatic test might be arranged something on the lines of the above. We can then try the best on the bump. At present no two behave alike. Could we try some of the water pump gland packing ? Also asbestos lagging soaked in oil, and some of the patent types of water joint packing recommended. If this test could be arranged, and some standard set, we should like to try a spring loaded packing on a plain shaft something like this (see sketch); if it worked reasonably well a special lever could be made to suit it. Hs {Lord Ernest Hives - Chair} /Rm. {William Robotham - Chief Engineer} | ||