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).
Tests and a proposed solution for problematic water pump glands on 20 HP and 40/50 HP chassis.
| Identifier | WestWitteringFiles\Q\February1927-March1927\ 96 | |
| Date | 21th March 1927 | |
| To R.{Sir Henry Royce} from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} c. to BJ. Wor.{Arthur Wormald - General Works Manager}✓ c. to RG.{Mr Rowledge} E.{Mr Elliott - Chief Engineer} c. to BY.{R.W. Bailey - Chief Engineer} DA.{Bernard Day - Chassis Design} ORIGINAL Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}5/LG21.3.27. WATER PUMP GLANDS. X4590 X8150 Our present pump glands on the 20 HP. and 40/50 HP. chassis give us a certain amount of trouble. We have carried out some tests on glands to overcome the difficulty. We have tried various types of packings including cork, but by far the most effective gland is produced by using half a dozen turns or so of 6-ply (.150 dia.) asbestos rope impregnated with graphite. This material is so soft that it beds itself to the shaft, it has been developed by the Works on the hydraulic shock damper gland. It functions satisfactorily with a spring load of 20 lbs., this gives automatic adjustment. We have tried single and double glands; we prefer the double gland. Attached is a sketch of the modification which we carried out to the existing water pump shaft arrangement when conducting the experiments. This gave the optimum results. Hs{Lord Ernest Hives - Chair}/W.A. Robotham. | ||