Proposal for an integrated starter protection and lubrication indicator system for the Phantom II model.
| Identifier | WestWitteringFiles\T\March1929-December1929\ Scan235 | |
| Date | 31th October 1929 | |
| EFC. {E. Fowler Clarke - Electrical Engineer} } FROM R. {Sir Henry Royce} & E. {Mr Elliott - Chief Engineer} HG. } DY. {F R Danby} } ORIGINAL R2/M31.10.29. Copy to SG. {Arthur F. Sidgreaves - MD} " G. {Mr Griffiths - Chief Accountant / Mr Gnapp} " DA {Bernard Day - Chassis Design} /EH " AND PHANTOM 11. STARTER PROTECTION, X4515. PLUS LUBRICATION INDICATOR. If we had a small syphon tube controlled by lubricating oil, which broke an electric contact, we could use the following combination: see (1) By coupling the starter control to the ignition switch we could make it impossible to put in the starter motor unless the ignition is switched on. (2) As soon as the ignition is switched on a green light appears, which ultimately ensures that the ignition is turned off after stopping the engine, and so avoiding running down the cells. (3) The oil pressure breaks the starter control circuit, so that if the engine is running when always the oil pressure is up, the starter cannot be engaged because there is no teazer circuit. (4) Should the oil pressure fail through loss of oil or other means, valve or pump failure, the green light will light up, (especially valuable in the dark.) (5) The green light shews that your engine has stopped in traffic. The number of advantages justifies the complication. No. (3) is especially valuable, and (4) is very valuable. Only one contact is required, which will be firmly pressed together when it should be in contact. R. {Sir Henry Royce} | ||
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).