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).
Use of bakelite dilecto washers for a 40/50 ballast resistance unit.
| Identifier | ExFiles\Box 39\3\ Scan188 | |
| Date | 27th July 1922 | |
| X3513 To By.{R.W. Bailey - Chief Engineer} from EFC. c. to Ds. X.3513. BAKELITE PRODUCT INSULATIONS FOR X.3716. 40/50 BALLAST RESISTANCE. Further to our EFC2/T27.6.22 and EFC3/T20.7.22, we are now handing you a 40/50 ballast resistance made up with bakelite dilecto washers, as nearly as possible in accordance with list handed to you in the case of the actuator box and main switch, under cover of our first mentioned note. rods Owing to not having suitable bakelite dilecto bushes, the bushes of this unit and also in the actuator box and main switch had to be made with the standard material. Perhaps you will let us know if you think that bakelite insulations as proposed by the list might be standardised for these units. EFC. EFC. | ||