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).
On the U.S.A. Bosch Battery Ignition system, its materials, and a note on Delco's supply conditions.
| Identifier | ExFiles\Box 163\7\ img013 | |
| Date | 24th February 1921 | |
| (S.H. 798. 10-12-20) G 2947 X 4284 b & E To R.{Sir Henry Royce} from Hs.{Lord Ernest Hives - Chair} c. to CJ. c. to Da.{Bernard Day - Chassis Design} c. to EWT. for R.R.Inc. Hs{Lord Ernest Hives - Chair}7/LG24.2.21. X.4275 - U.S.A. BOSCH BATTERY IGNITION. X.4284. X.2894. R11/G16.2.21. The points on the contact breaker are tungsten. They claim very remarkable wearing qualitiesfor the material used on the contact breaker arm. The vent for the jump spark distributor is obtained by hollow rivets which hold the clips which fasten the cover of the H.T. distributor. The price quoted by the Bosch is their standard selling price. I understood from Mr. Olley that the Delco people will only supply their electrical units on conditions that they do the complete electrical installation on a Car. Hs.{Lord Ernest Hives - Chair} | ||