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 with a sketch for a built-in jacking system for independent wheel suspension.
| Identifier | ExFiles\Box 139\2\ scan0071 | |
| Date | 4th April 1934 | |
| BES G117 To BY/HH. from E.{Mr Elliott - Chief Engineer} E.4/HH.4.4.34. c.c. Sgr. wor.{Arthur Wormald - General Works Manager} Hs.{Lord Ernest Hives - Chair} Hy.{Tom Haldenby - Plant Engineer} re Jacking Independent Wheel Systems. Referring to the above, it has occurred to me that the usual form of independent wheel suspension might be arranged with a built-in jack as shewn in the following sketch:- As we may wish to use this it might be as well to cover it to avoid paying royalty to anyone else. There is no doubt that we should want if possible to use an attached or built-in form of Jack and the member carrying the wheel might very well be made tubular in section with a screw or hydraulic ram operating through the bore. Naturally we should prefer the screw type. The jacking ram might also be operated on the ratchet principle. The ratchet jack is much more efficient and hence less tiring than the screw type but is not so convenient to operate as the pump handle normally used requires more room for operating. It would however appear that this difficulty could be overcome by using a double connecting rod form of operation giving a parallelogram movement. The operating handle would consist of a lever of which one end would form the fulcrum to be held in the hand, the other end being reciprocated, or the fulcrum | ||