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).
Different patterns of lubricators and felt-like glands for valve guides.
| Identifier | ExFiles\Box 35\3\ scan 015 | |
| Date | 21th July 1920 | |
| G.R. 585A (100 T) (S.G. 645. 10-5-20) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2618 To Hs.{Lord Ernest Hives - Chair} from R.{Sir Henry Royce} Copy to CJ. x 2764 R1/G21.7.20. X. 2764. X. 3315. RE VALVE GUIDES. We have noticed several patterns of lubricators and felt-like glands. We assume that these are not veryg suitable for the exhaust valves, owing to the heat causing trouble. They might be very useful for the inlet valves keeping them airtight and perhaps preventing wear by supplying lubrication. I shall be glad if you will trynall the patterns that are known. Mr. Elliott gives the following name, but you may know more - "Ayrtite". R.{Sir Henry Royce} | ||