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).
List of documents concerning gear shifting and variable speed transmission mechanisms.
| Identifier | ExFiles\Box 147\2\ scan0032 | |
| Date | 6th April 1939 guessed | |
| By.{R.W. Bailey - Chief Engineer} 502, 117 Automatic Shifters Inc. Improvements in Gear shifting Mechanisms for Motor Vehicles By.{R.W. Bailey - Chief Engineer} 502,133 Queensland Trustees Ltd. Variable Speed Power Transmission Mechanism. ------------ | ||