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).
Letter from The Lodge Sparking Plug Co. Ltd. describing the construction of a KR4A plug.
| Identifier | ExFiles\Box 79\1\ scan0147 | |
| Date | 16th October 1918 | |
| X601 THE LODGE SPARKING PLUG Co. LTD. TELEGRAMS: "IGNITER, RUGBY." TELEPHONE: RUGBY 235. AML/MAW RUGBY, 16th October 1918 Mr. Hives, C/o Messrs. Rolls Royce Ltd., DERBY. Dear Mr. Hives, I enclose a section of the KR4A plug for your own private information only. You will see that the copper is brought as far forward as possible, while there is still plenty of surface insulation along the mica tube. A hole is drilled right through the copper pin and the end of the nickel splayed out into the hole, so that it is quite impossible for the nickel pin to drop out. I hope the six plugs that we sent you are standing up successfully and hope to have your report in due course. Yours faithfully, Alex M Lodge 1 Enc. (Section of plug) ENCLOSURE Nº 74 | ||