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 steadiness of operation when using carbon contacts versus metal contacts in a control system.
| Identifier | ExFiles\Box 31\1\ Scan078 | |
| Date | 17th August 1920 | |
| Contd. -5- EFC4/T17.8.20.. X3560 We feel that this particular system of control is very interesting to us at the present moment as it seems that the use of carbon contact in place of metal contact introduces a certain steadiness of operation which seems to be absent, so far as we have gone with vibrator sets with metal contacts such as the Bijur, but we have a long way yet to go with these others to be able to say anything very definite. EXTRA STRONG EFC. R.R. 238M (500) (S.G. 763. 24-3-20) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2660 | ||