Rolls-Royce Archives
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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).
Lodge Sparking Plugs and the material change from Steatite to Porcelain insulation.

Identifier  ExFiles\Box 79\1\  scan0204
Date  21th October 1919
  
R.R. 295 B 200 T) (S.F. 673, 22-5-19. G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2376.
X601
EH. from BY.{R.W. Bailey - Chief Engineer}
BY17/P21.10.19.

CHASSIS - SPARKING PLUGS.
-------------------

Mr Pilley called with reference to the
question of the Lodge Sparking Plug. He states apparently in
a reply to your query made at the previous visit, that the C, type
of plug, a dozen of which he left with us was exactly the same as
the same type that were marketed in prewar days, with the exception
that instead of Steatite insulation, which they are now not able
to obtain, they have substituted Porcelain.

I told him I would let you know exactly what
he stated and hand the plugs over to you for testing.

BY:
  
  


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