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).
Instruction sheet detailing the observation of increasing sparking and deterioration of contacts over time.
| Identifier | ExFiles\Box 35\6\ scan 094 | |
| Date | 24th July 1922 | |
| RR 238 (300 Bks.) (SF 152. 6-11-18.) MP 197880 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To E.F.C. Order No P.B.4J. Customer's No. X 2894 July. 24th 1922 after which there was only occasional sparking at the contacts, with regular sparking on the gaps. after 10 hrs running a grey dust had settled round the sides of the points, the and they had commenced to discolour, and were slightly pitted. They were examined after every twelve hours running; their condition becoming gradually worse. Signed C.A.P. This Sheet must be filed on completion of the work. | ||