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).
Secret memo from 'R' to 'EFC' regarding re-current improvements for starter motors, including double brushes and a teazer circuit.
| Identifier | WestWitteringFiles\K\September1923\ Scan115 | |
| Date | 20th September 1923 | |
| H.R. 235A (100 T) (S.H. 159 11-8-20) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2800 ORIGINAL TO EFC. FROM R.{Sir Henry Royce} SECRET. R4/M20.9.23. c. to CL. E.{Mr Elliott - Chief Engineer} A.{Mr Adams} C. X.9620 X.9630 RE.CURRENT IMPROVEMENTS. The modification for the double brushes for the larger motors will be sent this week, the first model appearing to promise that the design will be extremely satisfactory. We have in connection with the starter motor arranged the teazer circuit so that there will be a certainty of motoring with quite a small current (say 10 amps.) and it will leave ample vigour for the actuating magnet. The drawing of the winding connections is already sent this week. (Lec. No. 1770.) R.{Sir Henry Royce} | ||