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).
Page two of a letter from John Craig regarding the cost and potential of a 'torque booster'.
| Identifier | ExFiles\Box 15\6\ Scan074 | |
| Date | 28th November 1923 guessed | |
| TWO. Costs are an important matter but are low in the case of the booster because it only requires a simple mechanism to do all that I have described. Although accuracy is required in any first-class machine, the torque booster need cost no more than a gear-box, clutch, and controls. As no device has been able so far to do anything that compared with what the torque booster will do, I expect to see my invention in general production. I am making the proposals to yourselves in the first place because the association manufacturing perfection with inventive perfection is a good thing in itself and certain to benefit both parties. Yours faithfully, John Craig | ||