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).
Up-to-date conversion designs and novel features for hydraulic dampers.
| Identifier | WestWitteringFiles\V\March1931-September1931\ Scan187 | |
| Date | 12th May 1931 | |
| HS.{Lord Ernest Hives - Chair} BY.{R.W. Bailey - Chief Engineer}) FROM R.{Sir Henry Royce} DA.{Bernard Day - Chassis Design}) C. to SG.{Arthur F. Sidgreaves - MD} WOR.{Arthur Wormald - General Works Manager} C. to PN.{Mr Northey} E.{Mr Elliott - Chief Engineer} C. to HY.{Tom Haldenby - Plant Engineer} RHC.{R. H. Coverley - Production Engineer} ORIGINAL HYDRAULIC DAMPERS. RECEIVED MAY 15 These are now brought up-to-date by conversion designs for existing dampers. (Personally I have never experienced any faults except external connecting rod knock, which was converted to spring loaded ball long ago, and central lubrication causing loss of oil.) The designs also for further production are completed, and will be less expensive in material and labour, and easier to keep in order. They have the following novel features: (1) Single double direction valve and spring which will be less costly than two, and making the body drilling simpler. It is thought to work more silently because it is not driven (hydraulically) on its seat, and is quite different to suddenly closing one and opening the other. (2) The positive lubrication of the main shaft bearings by the use of the oil pressure, the shaft acting as a restriction (simple drilling only.) (3) The idea of replenishing the oil cleanly and conveniently (easily) by pipes from the bonnet. This latter feature is awaiting a design of suitable 4 way pump and reservoir for the special thin oil. Features (1) and (2) are patentable. Most mechanical devices need re-designing after road experience has been gained. R.{Sir Henry Royce} | ||