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).
The testing of Cuno Auto-Klean filters and the similarity between the American and English versions.
| Identifier | ExFiles\Box 44\1\ Scan308 | |
| Date | 14th May 1929 | |
| Sg.{Arthur F. Sidgreaves - MD} c. Hs.{Lord Ernest Hives - Chair} X4037 BYL/G.14.5.29. Hs{Lord Ernest Hives - Chair} CUNO AUTO-KLEAN FILTER. ---------------------- Referring to Sg{Arthur F. Sidgreaves - MD}2/E8.5.29. and OY.3 of April 30th, there is no need to make any further comment beyond the fact that we have Cuno Auto-Kleaners on test, both for Aero and Chassis work, and therefore there is no need for America to supply same. The American Auto-Klean is identical in operation and particulars with the English made part and follow the Hele Shaw idea who augurated the method. BY.{R.W. Bailey - Chief Engineer} BM | ||