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).
Clarification needed for a patent claim on combustion chamber and piston head design.
| Identifier | ExFiles\Box 148\1\ scan0101 | |
| Date | 12th April 1939 | |
| -4- rather vague in that it mentions "walls of the combustion chamber so far as these overlap the cylinder" ; this will require clarifying and then after having sorted out these various points to establish the definite specific claim, particularly claim I.which should be as wide as it is possible to make it with varying types of cylinder head and piston head, as already mentioned, with protuberance of either one or the other member/could, I am sure, make a workable patent not likely to be infringed in any way. F.{Mr Friese} B. Halford. 12.4.39. | ||