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).
From R. to EFC discussing the Dalby Watson indicator and a patentable method for obtaining an indicator diagram.
| Identifier | ExFiles\Box 79\3\ scan0067 | |
| Date | 2nd January 1918 | |
| R.R. 235B (200 T) (S.D. 408. 26-4-17.) Bm. 2/156/12. z X.3181 R10/W2.1.18. To EFC. from R.{Sir Henry Royce} c. to BJ. X.3181 I have an old memo referring to the Dalby Watson indicator. I think this matter should not be lost sight of, and progress should be made to get a satisfactory apparatus as quickly as possible. X.2981. You will remember that I suggested a long time ago a very easy and simple way of obtaining an indicator diagram slowly from a fast running engine. I should be glad to know whether you think it is worth while doing anything on the lines suggested. The arrangement as suggested by me is patentable R.{Sir Henry Royce} | ||