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).
Test results on the composition of discs used in Hartford Shock Absorbers.
| Identifier | ExFiles\Box 51\4\ Scan079 | |
| Date | 24th October 1922 | |
| Mr. Hives. from GWH. {George W. Hancock - Head Chateauroux} X4426 24.10.22. HARTFORD SHOCK ABSORBERS. Mr. Hall's tests prove that the percentage of oil and wax drained out of one disc is roughly 10% too high of any known wood, and is of a wax composition. This verifies our views that the discs are soaked in a composition and is not a natural oil. GWH. {George W. Hancock - Head Chateauroux} | ||