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).
Wiring interconnections for the R+R Switchbox with a Smith dynamo and other components.
| Identifier | ExFiles\Box 24\2\ Scan197 | |
| Date | 10th August 1920 | |
| R.R. 224a.(100 T) (S. G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 542, 19-2-20) G 2618 To Da.{Bernard Day - Chassis Design} from EFC. c. to Da{Bernard Day - Chassis Design}/Hr. c. to Hs.{Lord Ernest Hives - Chair} EFC1/AT10.8.20. /-/ X.3760.- R+R SWITCHBOX. 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 Distribution 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. The Inspection Lamp Plug socket will in this case no doubt, be arranged by you on the combined Junction and Distribution Board. EFC. Handwritten Notes: Top center: Ke. Left margin (sideways): A copy of this letter was attached to EFC's previous note. Right margin (sideways): * = 2nd ammeter wire. IN INSTALLATION MISFIX Annotation pointing to 'wiring scheme': Forward to H.J.B, Blackburn Road Annotation pointing to 'Distribution Board': (A side & revs) A118 959 Bottom left (sideways): Diagrams should not be attached to such Memoranda as such attachments should be separately circulated * (SPMD) & solicit illustrations Bottom section: [Four columns of shorthand text] | ||