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).
The trial of tungsten contacts for a low tension make & break system.
| Identifier | ExFiles\Box 35\5\ scan 088 | |
| Date | 19th January 1920 | |
| To RHC.{R. H. Coverley - Production Engineer} from Ck.{Mr Clark} X.2894 Ck{Mr Clark}4/T19.1.20. X.2894 - TUNGSTEN CONTACTS FOR LOW TENSION MAKE & BREAK We are handing you herewith two tungsten rivets received from the Ind' Lamp and Wire Company U.S.A. Will you kindly have these fitted to a standard blade and screw of the R.R. chassis contact breaker for trial. We are also handing to you a short rod of tungsten .160" dia. obtained from the Fansteel Co. U.S.A. We would like you to see if there is any chance of us being able to make this up into contacts ourselves. Ck.{Mr Clark} | ||