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 Frank Smith & Co. regarding AFN.3 type air filters, requesting an invoice and materials for further testing.
| Identifier | ExFiles\Box 135\3\ scan0040 | |
| Date | 19th December 1931 | |
| Ha/Lid.{A. J. Lidsey}7/KT. Dec. 19th, 1931. Frank Smith & Co. (Elland) Ltd., Elland, Yorks. Dear Sirs, With reference to the two AFN.3 type air filters which you kindly supplied to us for test purposes some little time ago, we should be obliged if you would forward to us your invoice for these, we have used these on tests which we have been making in connection with S.U. carburetters and have found them very efficient. In connection with some other tests we wish to make, would you be kind enough to supply us with 2 lbs. of the wire and fabric filtering medium which you employ in your air filters. Yours faithfully, FOR ROLLS-ROYCE LTD. | ||