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).
Comparing a revised blueprint (LeC.2232) with an original scheme (LeC.2214) for Phantom Oil Relief Valves.
| Identifier | WestWitteringFiles\O\April1926-June1926\ Scan36 | |
| Date | 20th April 1926 | |
| [strikethrough]TO R.{Sir Henry Royce}[/strikethrough] FROM E.{Mr Elliott - Chief Engineer} C. to BJ. HS.{Lord Ernest Hives - Chair} BY.{R.W. Bailey - Chief Engineer} ORIGINAL PHANTOM OIL RELIEF VALVES. E1/M20.4.26. X8205 Please find herewith blueprint of LeC.2232. shewing the above revised in accordance with your suggestions. We think the alterations make a nice looking straightforward job. It has one or two possible disadvantages compared with the original scheme, as follows, but they are not of much importance:- (1) LeC.2232. has one more oil joint than LeC.2214. (2) All the valves are accessible on LeC.2214. by removing the top cover and one joint pipe, whereas on LeC.2232, the whole unit must be removed from the engine to get at the valves. As regards item (2) it would no doubt be better in each case to remove the whole unit in case of trouble. Either of the two schemes should be an enormous improvement in accessibility on what we have now. With regard to arranging the valves with loose tail guides in case of trouble due to tipping we will watch this point. [Text partially obscured by a "RECEIVED 22 APR 1926" stamp] As a matter of fact we had already drawn some valves of this type but discarded them with the idea of trying the simple scheme first. Blueprint of LeC.2214. attached for comparison. E.{Mr Elliott - Chief Engineer} | ||