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).
Hand-drawn diagram illustrating the function of a lead weight within an oil-filled damper chamber.
| Identifier | ExFiles\Box 170\2\ img137 | |
| Date | 3rd March 1933 | |
| LEAD WEIGHT IN OIL-FILLED CHAMBER (Bump) On the upward stroke, at upward accelno of 1g or as desired (set by changing shims A below spring) wt. slides all the way down closing holes B, cutting out the L.P. rebound valve. Holes B are generally not symmetrical about stem, this locks the weight down during subsequent rebound stroke by oil pressure. BUMP VALVE L.P. REBOUND H.P. REBOUND Olley Mar 3/33 | ||