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).
Alternative schemes for quieting Bentley timing gears.
| Identifier | ExFiles\Box 136\1\ scan0059 | |
| Date | 8th July 1933 | |
| [Handwritten] Rm{William Robotham - Chief Engineer} XJH To RHC.{R. H. Coverley - Production Engineer} from E/JNR.{Charles L. Jenner} E/JNK.1/HP.8.7.33. c. Wor.{Arthur Wormald - General Works Manager} Hs.{Lord Ernest Hives - Chair} Hy.{Tom Haldenby - Plant Engineer} re Bentley Timing Gears. On the 22nd ultimo. we sent you drawings dealing with all the gears and drives suitable for using a fabroil camshaft wheel. We have now designed an alternative scheme for quietening the camshaft drive. This consists of a six pointed balancing cam mounted on the camshaft wheel, the pressure being applied by three radial tappet rollers and springs. We send you herewith LeC.3543 showing the mechanism, and LeC.3563 showing the cam and lift curves. All the gears in the train are in metal as standard. We are now working on yet another scheme in which we use a brake. The frictional damping decreases with the rise in speed. E/JNR.{Charles L. Jenner} Drawings to BY.{R.W. Bailey - Chief Engineer} Prints to RHC.{R. H. Coverley - Production Engineer} | ||