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).
Sending a photostat of a Delco coil for comparison with an American Bosch coil.
| Identifier | ExFiles\Box 61b\4\ scan0104 | |
| Date | 11th November 1926 | |
| X4275 To R.{Sir Henry Royce} from EFC. c. BJ. EFC1/T11.11.26. AMERICAN BOSCH BATTERY IGNITION X.4275. X4284 Further to our EFC2/T8.11.26, herewith we send you photostat copy of the Delco coil which is constructed on somewhat similar lines to the American Bosch coil which we have for experiment, i.e. it has the central high tension and the external primary. There would appear to be a good deal to be said for this method of construction. EFC. | ||