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).
Samples of insulating materials for machining tests.
| Identifier | ExFiles\Box 39\3\ Scan078 | |
| Date | 5th May 1921 | |
| X 3513 To IHC. from EFC. c. Hs.{Lord Ernest Hives - Chair} c. Da.{Bernard Day - Chassis Design} c. De/Thr. c. Ey. EFC1/TG.5.21. X 1109 (crossed out) SAMPLES OF INSULATING MATERIAL FOR MACHINING TESTS. X.3513 We have made a selection of insulating materials for machining tests, duly labelled, a list of which is attached. We should be glad if you would have these tested as far as possible for suitability for drilling, turning (with fine and moderately deep cuts), tapping and polishing. The thin piece of Continental Bakelite might be tried for pressing like sheet metal as mentioned in Cy 24/F25.9.19. EFC. | ||