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 continued use of 'Whalebone' material for the contact breaker arm rubbing block.
| Identifier | ExFiles\Box 69\1\ scan0406 | |
| Date | 27th September 1926 | |
| Handwritten: X4646 EFC. c. to Wd.{Mr Wood/Mr Whitehead} BY/Cgh{W Clough}3/G.27.9.26. Handwritten: 9-0 28/9/26 X.4646 - BONE GREY FIBRE. Handwritten: Bakelite With reference to EFC1/T25.9.26. when we changed from red fibre [red is crossed out] it was agreed to use "Whalebone", and this material has been used ever since for the rubbing block on the contact breaker arm. In view of your report we will continue to use "Whalebone". BY/Cgh.{W Clough} [Signature] Handwritten: This is the original material as standardized H.E.W. | ||