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).
Improvements to the engine cooling system, suggesting an automatic shutter over a simple warning lamp.

Identifier  ExFiles\Box 175\4\  img065
Date  15th February 1927
  
COPY.
Hy.{Tom Haldenby - Plant Engineer}
We have received standardisation sheet from England for tell-tale lamp on thermometer to avoid driver boiling unknown.
This seems like going half way towards an automatic shutter without getting there.
On your return, perhaps you would suggest a shutter operated by either oil pressure or intake vacuum with a thermostat to control the operation.
This is the ideal scheme because it has power to break ice and shuts when engine stops.
The alternative is vapour cooling.
Oy.
  
  


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