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).
Breakages of instrument board patch glass and proposing a design change.
| Identifier | ExFiles\Box 15\7\ Scan144 | |
| Date | 23th May 1930 | |
| X 7530. Hs{Lord Ernest Hives - Chair} Py from Mx.{John H Maddocks - Chief Proving Officer} Mx{John H Maddocks - Chief Proving Officer}9/T23.5.30. INSTRUMENT BOARD PATCH GLASS. We attach hereto copy of memo from Sales. We have experienced from time to time similar cases of breakage. We know the breakages are not the result of bad handling or mounting, glasses have cracked whilst standing in patch instruments in boxes in store. We submit for your consideration, that now that smaller bulbs are used, there is now no need to drill the glass and fit a special reflector, and that the aluminium mount itself would form the reflector. | ||