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).
Letter to British Filters Ltd. regarding filter restriction tests and delivery curves for Merlin oil pumps.
| Identifier | ExFiles\Box 136\3\ scan0127 | |
| Date | 30th April 1941 | |
| Rm.{William Robotham - Chief Engineer}9/ML. T.C.Worth,Esq., British Filters Ltd., Aircraft House, MARKET HARBOROUGH. Dear Worth, With reference to the tests you are doing on filter restriction for me. I attach herewith delivery curves of the Merlin oil pumps. The pressure oil pump is the only one in which you are interested for full flow filtration. You should reproduce the flow of the increased capacity pressure pump, which I have marked A.{Mr Adams} and take your filter tests on this. Yours sincerely, Dictated, but signed in Mr. Robotham's absence. Attachment. [Handwritten notes: Oil Filters, 1139] | ||