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).
Standardization and testing of a demountable Lodge ignition plug.
| Identifier | ExFiles\Box 72\1\ scan0087 | |
| Date | 10th November 1925 | |
| 48980 B.J. Wor.{Arthur Wormald - General Works Manager} C.HS.{Lord Ernest Hives - Chair} Hm.{Capt. W. Hallam - Head Repairs} I.H. SWB. BYL/H.{Arthur M. Hanbury - Head Complaints} 10.11.25. IGNITION PLUG. ----------- BJ3/H.9.11.25. The question of Standardization of the demountable Lodge Ignition plug is under consideration. We have always made a practice in the past of buying a number of plugs and using same experimentally and on production for a short time before we issue a Standardization Sheet for the plug in question. In regard to the Lodge plug, I have not pressed for the Standardization Sheet promptly, as I usually do, because the plug itself is precisely similar in every respect to the one we have been using. The only difference is that instead of the electrode and insulator being secured in position by rolling over the steel sleeve at the top which makes the parts so that they cannot be dis-assembled, a gland has been used which permits of the plug being taken to pieces. The plugs have been used for some time, and are in use on the car going to France. As a matter of fact we have used some 500 of them in the Test Dept. on different cars troubled with over-oiling. Exhaustive tests have been made by the Experimental Dept. to show that the plug has no peculiarities not possessed by the present Lodge. I was instructed by the Experimental Dept. and Mx.{John H Maddocks - Chief Proving Officer} that they prefer the plug in question after exhaustive testing. BY.{R.W. Bailey - Chief Engineer} | ||