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).
Design memorandum with annotated sketches for a magnet-based electrical component.
| Identifier | ExFiles\Box 64\4\ scan0018 | |
| Date | 2nd May 1927 guessed | |
| Contd. -2- Avoid castings (except die castings) wherever we can. Do not let connections depend on pressure on insulations. Speaking generally I should prefer to fix the base to the chassis and then make the wire connections at the front, and then put the cover on. Pivot pin fast in armature. Flex: same as brush holders. Central spring. Contact plate extended sideways for downward contacts. Case nearly or quite a circle. Rather small dia. of coils & longer. Probably not continuous because insulation. Simple spring no plunger, half in each. Spread out sideways. Battery of flex: suitable for 100 amps. This is the most inexpensive and efficient type of magnet, better than solenoid, because less friction, but one could use such if found more suitable. This is enough to give you a new start. R.{Sir Henry Royce} | ||