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).
Technical note proposing a modification to the 'SS' water pump gland nut to prevent it from loosening.
| Identifier | ExFiles\Box 149a\1\ scan0018 | |
| Date | 23th January 1929 | |
| X. 7150 R.{Sir Henry Royce} from E.{Mr Elliott - Chief Engineer} E1/M23.1.29. c. to BJ. Hs.{Lord Ernest Hives - Chair} BY.{R.W. Bailey - Chief Engineer} 'SS{S. Smith}' WATER PUMP GLAND NUT. One of the minor troubles in connection with the SS.{S. Smith} is that the water pump gland nut comes loose, due it is said to being insufficiently tight. It is the correct hand of thread and the gland is the same in all respects as the Phantom, but is carried in a spigot mounted bracket which is said to render the nut inaccessible except to two fingers. We propose to add four tommy bar holes as on blueprint LeC.2644 attached, so that the gland can be satisfactorily tightened. The four bosses for the holes have been added on the end face for min. weight, with the idea that the nut will be made as a brass forging. The nut could however be turned from the bar and double the number of holes drilled to remove excess material. The original drg. is attached to BY's copy of this note. E.{Mr Elliott - Chief Engineer} | ||