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).
Function and efficiency of American 'Cuno' anti-spill radiator caps.
| Identifier | ExFiles\Box 149a\2\ scan0194 | |
| Date | 3rd May 1934 | |
| To E.{Mr Elliott - Chief Engineer} c. to SG.{Arthur F. Sidgreaves - MD} c. to Wor.{Arthur Wormald - General Works Manager} c. to By.{R.W. Bailey - Chief Engineer} Anti-Spill Radiator Caps. We hand you herewith a "Cuno" radiator valve. We came across these in America and they impressed us as being particularly light and well made. You will see that their function is exactly the same as our own radiator anti-spill cap. We have been running one on a 20/25 car and Hancock reports that they are much more efficient than our own anti-spill cap and that they really do seal the water system, thus reducing the corrosion which takes place. Our own anti-spill radiator cap has such a large area of valve that we have never been able to get a complete seal. We have proved that there is sufficient area to pass the steam generated when the 20/25 is boiling without the generation of undue back pressure. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||