The operation of a car jack, proposing a revised handle ratio for better ground clearance.
| Identifier | ExFiles\Box 26\3\ Scan128 | |
| Date | 10th February 1932 guessed | |
| -2- engage the handle on to the jack owing to lack of ground-clearance. If the jack is turned round so that it is operated from the offside this failure is corrected. We shall be interested to hear your remarks, and would suggest that a handle ratio of 20:1 would be more suitable to our cars. This ratio will give approximately the same lift of car per handle turns as on the average jack screw. Yours faithfully, For ROLLS ROYCE LIMITED. | ||
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).