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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).
New ignition coil (No. L.I.12) with L.P.S. paper insulation for testing.

Identifier  ExFiles\Box 164\5\  img013
Date  8th January 1931
  
X6058.

RHC.{R. H. Coverley - Production Engineer} from EFC.
c. Hs{Lord Ernest Hives - Chair}/AJL.

EFC3/AD8.1.31.

X.6058. Std. Ignition coil insulated
with L.P.S. paper.

We hand you herewith coil No. L.I.12
wound with L.P.S. waxed paper insulation which
considerably reduces H.T. leakage at high temperatures.
Will you please have this coil fitted to chassis 19-EX
for test.

EFC.
  
  


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