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).
Changing the insulation material for a main switch from vulcasbestos to micanite.

Identifier  WestWitteringFiles\D\April1920\  Scan22
Date  19th April 1920
  
To EFC. from R.{Sir Henry Royce}
Copy to CJ.
BN.{W.O. Bentley / Mr Barrington}
ORIGINAL
R5/G15/4/20. 4
X.3034 RE MAIN SWITCH - EFC3/T10/4/20.
I quite agree to changing the insulation from vulc-asbestos to micanite if there is any sign of the vulcasbestos shrinking. It is usually considered that vulcasbestos is fairly permanent, but this can be easily tested by heating the switch artificially.

R.{Sir Henry Royce}
D
19 APR 1920
  
  


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