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 about design changes and circuit queries for the X.9650 Electric Sequence Starter.
| Identifier | ExFiles\Box 64\3\ scan0165 | |
| Date | 15th January 1924 | |
| X9650 S E C R E T. To EFC. from E.{Mr Elliott - Chief Engineer} c. CJ. R.{Sir Henry Royce} E1/M15.1.24. E.{Mr Elliott - Chief Engineer} A.{Mr Adams} C. X.4168b - ELECTRIC SEQUENCE STARTER. X.9650. Referring to EFCc/T12.1.24.., we have already pointed out on LEC.1802 that the drawing is to be re-made to shew more litterally the actual design, on which, as a matter of fact the battery positive is on the fixed poles of the switch. We sent through this drawing as it was before memo. R3/M1124, to avoid delaying the patent work, and we have since been forced to temporarily abandon the electrical work owing to the great pressure on EAC.2. Is not the non-inductive resistance in parallel with the actuator circuit rendered largely unnecessary by the fact that the main switch must close before the actuator (teazer) circuit is broken. Furthermore could not the teazer and actuator windings be so proportioned relative to the main winding of the motor as to favour non-sparking at the moment of break. E.{Mr Elliott - Chief Engineer} | ||