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).
Confirming the quality and source of bone grey fibre for battery ignition contact breaker rubbing blocks.
| Identifier | ExFiles\Box 69\1\ scan0416 | |
| Date | 18th June 1930 | |
| HEW X4646 EFC. FROM ROY.{Sir Henry Royce} ROY{Sir Henry Royce}/MS8/P.18.6.30. X.4646. BONE GREY FIBRE FOR BATTERY IGNITION CONTACT BREAKER RUBBING BLOCKS. In reply to yours EFC4/AD.17.6.30., the Whalebone Fibre used for the above is still being obtained from the same source as the original material previously standardised, and so far as we are aware there has been no change in the quality. Roy.{Sir Henry Royce} | ||