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).
Inquiry about the 'Ferrox Surface' treatment for piston rings mentioned in a Perfect Circle Piston Co. brochure.
| Identifier | ExFiles\Box 148\3\ scan0290 | |
| Date | 29th December 1937 | |
| 1256 Rm{William Robotham - Chief Engineer}2/R.{Sir Henry Royce} 29th December, 1937. C.H. Brooks, Esq., Light Production Co.,Ltd., 60/66, Rochester Row, WESTMINSTER. S.W.1. Dear Brooks, I have just seen a brochure from the Perfect Circle Piston Co. in which they claim great things for a ring called a Ferrox Surface. I should like to know whether you have any information as to what a Ferrox Surface is, and whether it really does anything. Yours sincerely, | ||