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).
Comparison of insulating materials such as Bakelite, Beldalite, and Hightensite from various suppliers.
| Identifier | WestWitteringFiles\G\September1921\ Scan85 | |
| Date | 21th September 1921 | |
| R.R. 235A (50 T S.H. 986, 19-2-21) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 3008 -2- EFCZ/T21.9.21. Contd. by them in this country from raw material obtained from the Damard Lacquer Co; the two qualities are "standard" and "Admiralty". They are not of very good finish and are probably made of coarser paper than the American product. The material supplied by Archibald Campbell, the English agent for the Swiss Insulating Works, as "Bakelite", has a paper base and is similar to the American products. We have other materials awaiting test, for instance, black bagelite in rough discs from the B.T.H. Co., Beldalite, and Hightensite (two grades - standard and special heat resisting). EFC. | ||