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).
The use of olive joints for the Phantom III hydraulic jack system and modifications to the 'Jackall' pump.
| Identifier | ExFiles\Box 139\2\ scan0409 | |
| Date | 25th November 1935 | |
| To RHC.{R. H. Coverley - Production Engineer} Copy to Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} Bx E/Lid.{A. J. Lidsey} X1166 E/Ev.{Ivan Evernden - coachwork}2/MN.25.11.35. Phantom III Hydraulic Jacks. You will have seen from a previous memo. ref:- E/Lid.{A. J. Lidsey}2/HP.23.11.35, that it is agreed to use olive joints for the piping throughout the system, the olive joints to be those supplied by Messrs. Sessions. As requested in our E/Ev.{Ivan Evernden - coachwork}1/MN.11.11.35, one car is to be fitted up with the Sessions rams, but the pump is to be manufactured by Messrs.Smith & Sons, known as 'Jackall', and shown on LeC 4798. We have sent to you a pump, and this pump has olive joints to the piping, in which the olives are forced against the cast metal of the casing. We understand that this system is very bad and do not wish to use it. In order that all the olives used during this test may be those recommended by Mr.Sessions, we send herewith 5 complete olive joints so that you may fit three of these into the body of the pump in the place of the olive joints supplied. As far as we can see the thread in the pump body is suitable for the Sessions olive adaptor. We are aware that the feed from the tank on the 'Jackall' pump at the moment is made for a 5/16ths.pipe. We wish this to be changed to a 1/4 pipe so that it is the same as the delivery pipes, so keeping the olive adaptors all identical. Ev.{Ivan Evernden - coachwork} | ||