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 implementation and patent status of an anti-splash valve fitted to radiator filler caps.
| Identifier | ExFiles\Box 149a\3\ scan0135 | |
| Date | 21th February 1934 | |
| By.{R.W. Bailey - Chief Engineer} Radiators with Anti-Splash Valve fitted to Filler Cap. With reference to attached correspondence re above. This feature was instructed for Phantom II N-2 Series R & LH{Mr Haworth} Chassis in memo By/CS4/IG 11-9-30, 20/25 HP Chassis 1st Chassis in "T" Series memo By/CS5/IG 28-1-31 and of course all Bentley Chassis. We have indicated on blueprint herewith in red how the air enters the radiator when the vacuum valve is open. With reference to the question of patenting same, it is requested in memo E3/M 11-9-30 which accompanied the design Lec(2817) that you protect same in R's name. British Patent No 357779 dated 24/9/30, allowed to lapse, no foreign application. Byl G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 21/2/34 | ||