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).
Proposal for a design change to the J.2 Series Vacuum Pump to re-route its air exhaust.
| Identifier | ExFiles\Box 64\1\ scan0047 | |
| Date | 16th August 1929 | |
| BY/CS. c. Hs.{Lord Ernest Hives - Chair} 17510 BY1/G.16.8.29. VACUUM PUMP. J.2 SERIES. --------------------------- It is most important that we should get out a scheme as quickly as possible by which we return the air we exhaust from the vacuum pump direct to the lower chamber of the pump itself instead of carrying same round to the carburetter. If we could arrange a cylinder with a passage which delivers directly back so much the better, as it is important to carry out this change in such a way that it can be applied retrospectively without scrap in consequence. BY.{R.W. Bailey - Chief Engineer} By | ||