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).
Suggesting modifications to the air chamber plug on a Damper Governor Unit to avoid it being mistaken for a filling plug.
| Identifier | ExFiles\Box 151\2\ scan0246 | |
| Date | 6th June 1934 | |
| V4698 To WM. from HDY. {William Hardy} HDY. {William Hardy} 4/HP.6.6.34. c.c. Mr. E. {Mr Elliott - Chief Engineer} W. Hs. {Lord Ernest Hives - Chair} Mr. RHO. Damper Governor Unit. The School of Instruction have pointed out that the plug which closes the top of the air chamber may be mistaken for a filling plug. To avoid this possibility we suggest that either the plugging should be done with aluminium rod sawn off, rivetted over and filed flush, or if this is not good enough to hold air at 30 lbs.sq.in. without leakage, a similar plug to the one now used may be made in aluminium with an extension for screwing in which is afterwards sawn off. HDY. {William Hardy} | ||