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).
Design and components of a D.W.S. Hydraulic Jacking System.
| Identifier | ExFiles\Box 139\2\ scan0403 | |
| Date | 23th November 1935 | |
| X1166 BOWERING File BY.{R.W. Bailey - Chief Engineer} c. Hs.{Lord Ernest Hives - Chair} RHO. EV.{Ivan Evernden - coachwork} E/Lid.{A. J. Lidsey}2/HP.23.11.35. D.W.S. Hydraulic Jacking System. We received a visit yesterday from Mr Donald Sessions in connection with the above, and were able to clear up several points which were previously in doubt. (1) Type of joints to be used in the pipe line. This point was previously doubtful because we had no comparative data as to the relative efficiency of olive or flanged type of pipe unions under the pressures which have to be employed. Mr Sessions has carried out tests on both types of joints under 8000 lbs/sq.in.pressure and the olive joint is very definitely superior to the flanged joint. We propose, therefore, to use the olive joint throughout and because the success of the system depends largely on the type of joint used, Mr Sessions suggested that he should be responsible for the design and supply of all olive joints which will be made for him by Benton and Stone. This was agreed to and we have arranged to let him have as quickly as possible details of all the pipe connections required. Will BY.therefore complete the details of these parts sufficiently to show the method required of fastening them to the engine or frame; we will then send these details to Mr Sessions who will complete them in respect of the olive fittings and will then proceed with their manufacture. (2) Flexible connections. Mr Sessions will supply the three flexible Lockheed type of connections required for the system and requires detail drawings showing the length of pipe required. (Schemes have been issued showing the two flexible pipes required to cater for the movement of the engine relative to the frame and a scheme is almost completed showing the flexible pipe to the rear axle). (3) Hydraulic Control. The pipe from the pump to the instrument board control | ||