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 ROY to Hs. regarding two S.U. Petrolifts sent for inspection, one being a sectioned model to demonstrate the spark on the points.
| Identifier | ExFiles\Box 27a\2\ Scan038 | |
| Date | 7th February 1931 | |
| To Hs.{Lord Ernest Hives - Chair} from ROY.{Sir Henry Royce} 12677 ROY{Sir Henry Royce}4/MG7.2.31 Herewith two S.U.Petrolifts, which may be of interest - although I quite understand R has decided not to adopt such an apparatus on our manufactures. One is the standard production article, and the other the same with a hole cut in the tube to show the make and break working. This section will work, and it is suggested you take particular note of the amount of spark they are getting on the points. ROY.{Sir Henry Royce} ENCLOSURES. 2 samples . 1063, 1070 ENCLOSURE No 173 JUSTSO ENCLOSURE No 174 JUSTSO | ||