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 Lodge Plugs Limited responding to complaints about short-circuiting C9 plugs and discussing experimental pot type insulators.
| Identifier | ExFiles\Box 79\1\ scan0225 | |
| Date | 3rd May 1920 | |
| X601 Lodge Plugs Limited. Rugby. Directors: J.{Mr Johnson W.M.} Alfred Hopps Bernard Hopps Alec M.{Mr Moon / Mr Moore} Lodge F.{Mr Friese} Brodie Lodge Telegrams: "Lodge, Rugby" Telephone: Rugby 276 (2 lines). Private Branch Exchange. Code Used: A.B.C. (5th Edition). Messrs. Rolls-Royce Ltd., Nightingale Road, DERBY. YOUR REF. Hs{Lord Ernest Hives - Chair}5/LG29.4.20 OUR REF. AML/MAW Date 3rd May 1920. FOR THE ATTENTION OF MR. E.W.HIVES. Dear Sirs, We beg to acknowledge receipt of your letter of April 29th, and regret to hear that you have had several complaints about short circuiting of the C9 plugs, and we note that you favour the pot type of insulator. But we know of no material of this class that we could offer you with confidence for use on your engines. We have considerable experimental work proceeding on the subject of pot insulators, and as soon as we have anything that we can offer you with confidence, we will let you know. But we submit that the complaints about short circuiting may be very largely due to the use of inferior petrol, as we hear numerous complaints about porcelain plugs being short circuited through soot. The writer is bearing your request in mind, and we hope to send you shortly some plugs with our new pot insulators, but these are only on an experimental basis at present. Yours faithfully, LODGE PLUGS LIMITED. | ||