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).
Specifications for a car jack and stating a preference for mechanical over hydraulic types.
| Identifier | ExFiles\Box 26\6\ Scan014 | |
| Date | 31th January 1929 guessed | |
| Contd :- -2- Minimum height - not greater than...... 6.50" Initial hand adjustment - not less than 3.50" Mechanical lift - not less than....... 5.50" Total intended height - not less than.. 15.50" We prefer a sound mechanical Jack to the hydraulic types; from one experience the latter are costly and invariably leak oil, although they are very easy to operate. Hs{Lord Ernest Hives - Chair}/A.J.Lidsey. | ||