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).
Alternative materials for Zenith filter covers, proposing a new lighter material.
| Identifier | ExFiles\Box 44\1\ Scan239 | |
| Date | 10th October 1928 | |
| Hs.{Lord Ernest Hives - Chair} X 4037. BY/Cgh{W Clough}3/G.10.10.28. re ZENITH FILTERS. ----------------- At our request the Order Office have submitted to the Zenith Carburetter Co. a drawing showing the covers for the above filters made as sheet aluminium pressings instead of glass. The Zenith people replied that they have already submitted a brass bowl which was undoubtedly on the heavy side, but they have recently been making these in a much lighter material which they consider will be almost as light as the aluminium one which we suggested. We hand you herewith the new cover which they are proposing, and before doing anything further in the matter we await your recommendation. BY/Cgh.{W Clough} | ||