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 fitting of tungsten contacts for a low tension make and break system.
| Identifier | ExFiles\Box 35\5\ scan 098 | |
| Date | 12th April 1920 | |
| X 2894 To EFC. from RHC.{R. H. Coverley - Production Engineer} S to L RHC{R. H. Coverley - Production Engineer}5/LG12.4.20. RE TUNGSTEN CONTACTS FOR LOW TENSION MAKE AND BREAK. X.2894. X 3462 Will you kindly note that we have fitted to 49-GB the screw and blade which have tungsten rivets supplied by the Ind. Lamp and Wire Co. U.S.A. RHC.{R. H. Coverley - Production Engineer} [Signature] R.R. 235 (50 T) (S.G. 501. 8-1-20) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 1584. | ||