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).
Necessary wiring interconnections for a switchbox, incorporating a Smith dynamo and other components.
| Identifier | ExFiles\Box 40\2\ Scan020 | |
| Date | 10th August 1920 | |
| To Ds. From EFC. c. to Ds/IHr. c. to Hs.{Lord Ernest Hives - Chair} X 3552 EFC1/AT10.8.20. X.3760.- R+R.{Sir Henry Royce} SWITCHBOX. X.4173 Further to our EFC5/T6820, in using the R.R. Switch-box with the proposed wiring scheme incorporating Smith dynamo, Smith Cut-out and R+R.{Sir Henry Royce} Combined Junction and Distributing Board, certain interconnections in which the switchbox are necessary which are not quite the same as those referred to in our previous note above. These interconnections will consist in connecting together three points in the one instance, and two points in the other, as shown on the connection diagram for this system, already handed to your Mr. Thacker, will you therefore kindly look into this. X.3552 The Inspection Lamp Plug socket will in this case no doubt, be arranged by you on the combined Junction and Distribution Board. EFC. | ||