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).
Performance of a trembler coil and a request for new four-volt and six-volt coils.
| Identifier | ExFiles\Box 180\M3\M3.3\ img014 | |
| Date | 26th March 1918 | |
| 7CA To EFC. from R.{Sir Henry Royce} Copy to CJ. ORIGINAL ADD 26th March, 1918. R14/026318. RECEIVED 28 MAR 1918 X.562 X.1607 RE TREMBLER COILS. The one I have on 7 CA. is working nicely. There is no urgency in the matter, and I should prefer to wait until you had a good one to send. To enable me to get some further experience in this matter, I should be glad if you would send one for four volts, and one for six volts, both of the improved type of trembler to the latest suggestions. re rapid iron slow platinum. R.{Sir Henry Royce} R R LTD DERBY (S'FORD'S NO 999 1M-12) NOV 21/1/18 | ||