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).
Demonstration of the Elverson Oscilloscope on a Goshawk engine.
| Identifier | ExFiles\Box 53\1\ Scan026 | |
| Date | 16th August 1922 | |
| To R. {Sir Henry Royce} & E. {Mr Elliott - Chief Engineer} from EFC. {E. Fowler Clarke - Electrical Engineer} c. to W. & PN. {Mr Northey} c. to Rg. {Mr Rowledge} & Da. {Bernard Day - Chassis Design} c. to Ey. & EP. {G. Eric Platford - Chief Quality Engineer} c. to Wd. {Mr Wood / Mr Whitehead} c. to HY. {Tom Haldenby - Plant Engineer} X4541 EFC {E. Fowler Clarke - Electrical Engineer} 1/T16.8.22. X.4541 - RE ELVERSON OSCILLOSCOPE. We were yesterday visited by a Mr. Davey of the Oscilloscope Syndicate Ltd., who brought along a demonstration apparatus, and demonstrated to us on a Goshawk engine on the test bed the utility of this apparatus, Ey. & Rg. {Mr Rowledge} being present at the demonstration. The apparatus comprises a contact breaker which is generally coupled so as to run in the case of an engine at camshaft speed, and can be arranged to give 1, 2 or 4 breaks per revolution. By means of an accumulator and coil unit, a high tension discharge is generated at every break and is utilised in the case of this apparatus to give instantaneous illuminations from a neon-filled electronic discharge lamp. The method only differs from what we have used before to investigate rapidly moving parts in that a lamps is used as a source of illumination instead of a spark gap on a high tension condenser in parallel, and some gain in illumination is thereby secured. There appears to be nothing that the instrument can do more than we can arrange for without such apparatus, using perhaps a magneto, as we have previously done in several instances. Contd. | ||