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 clarifying the material composition of their C9 type plug electrodes.
| Identifier | ExFiles\Box 79\1\ scan0234 | |
| Date | 27th October 1920 | |
| COPY. TR{Capt. F. W. Turner - Finance} 235 A (100 T) (S.F. 846. 6-8-19) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2460. LETTER RECEIVED FROM:- LODGE PLUGS LIMITED, RUGBY. Our Ref.- WS/MAW. Your Ref.- Wd{Mr Wood/Mr Whitehead}8/NJ261020. 27th October 1920. Messrs. Rolls-Royce Ltd., Nightingale Road, DERBY. Dear Sirs, LODGE PLUGS - C9 TYPE. ------------------- In reply to your letter of the 26th inst., the report that we are employing Firth's Stainless Steel for the centre electrode of these Plugs is incorrect. We do not use Firth's Stainless Steel in our C.9 type plug, the centre electrode of which, and also the 3 point stamping forming the earth electrode, are pure nickel. Yours faithfully, LODGE PLUGS LIMITED, (Sgd) Wm.Shelley. SALES MANAGER. | ||