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).
Modifications to a distribution board fitted with a green lamp switch, focusing on its dimensions, materials, and component placement.
| Identifier | WestWitteringFiles\T\2July1928-December1928\ Scan049 | |
| Date | 26th July 1928 | |
| FROM E.{Mr Elliott - Chief Engineer} C. to EFC. ORIGINAL 2 E1/M26.7.28. X7740 X4040 DISTRIBUTION BOARD FITTED WITH GREEN LAMP SWITCH. We send herewith LeC. 2583. giving particulars of the modifications that should be made to D.{John DeLooze - Company Secretary} sch. 358. We wish the size of the cover to be kept down to the minimum possible dimensions, and for this purpose we have asked for the shape of the lid{A. J. Lidsey} to be parallel to the curved section specified, and also that the diagram of connections shall be printed on a thin piece of material riveted into the lid{A. J. Lidsey} as indicated. To avoid any further form of spare fuse clip we have moved the automatic cutout switch back to its original position as regards height, and used a standard fuse clip in the space thereby made available. With regard to the external surface of the base and cover we have noticed that it will be easier for the moulding if beads are left off, and it will also be more cleanly in avoiding features which collect dust. We have therefore brought this cover and base into line with the sequence starter switch recently sent through in making the cover absolutely plain and the base to slightly larger dimensions alround, finishing with a radius on the outer edge. We think that Ivorine, or some such suitable white material could be used for carrying the printed diagram of connections. E.{Mr Elliott - Chief Engineer} | ||