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).
New scheme for the 'Eagle' water pumps to address issues with worn rotor spindles.
| Identifier | ExFiles\Box 40\5\ Scan050 | |
| Date | 4th June 1919 | |
| To DA.{Bernard Day - Chassis Design} from E.{Mr Elliott - Chief Engineer} c. to CJ. c. to Bn.{W.O. Bentley / Mr Barrington} c. to EH. c. to EFC RE "EAGLE" WATER PUMPS. Recent events have focussed a certain amount of attention on to the Eagle water pump. Since we have had cases of worn pump rotor spindles, it is felt that the pump as at present arranged may not be entirely satisfactory. A scheme has been arranged, in accordance with Mr. Royce's instructions, the object of which is to provide a lubricated bearing at each end of the pump spindle and a lubricated gland for preventing water leakage. Drawing No. LeC.1096 attached illustrates this scheme. Dealing first with the top portion of the pump where the drive is taken out, it will be seen that a short water lubricated bearing is placed next to the rotor. This is followed by two-gland packings, separated by an annulus supplied with oil. A whitemetalled oil lubricated bearing follows next, the oil being supplied through the outer gland packing. Dealing with the bottom end of the pump, again a short water lubricated bearing is placed next to the rotor. This is followed by a gland packing, and then by a blind ended bearing oil lubricated, having grooves which feed oil to the last mentioned packing. This footstep bearing is so arranged that the spr cylindrical portion of its slides under the agency of a spring, and applies the necessary pressure to the packing of the bottom half of the water pump spindle. Contd. | ||