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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).
Improvement of a steam valve for a Continental radiator using a blow-off spring.

Identifier  ExFiles\Box 92\6\  scan0084
Date  7th January 1937
  
To HPS.{Horace Percy Smith - Experimental Factory Mgr}

Rm{William Robotham - Chief Engineer}/Std.17/JH.7.1.37.

STEAM VALVE FOR CONTINENTAL RADIATOR.

Although we have had some sucess with the above steam valve, as drawn, we think that a better result would be obtained by using a blow off spring of approximately same external diameter as the pressure valve. Attached are particulars of such a spring. Will you please have such a spring detailed and made, together with necessary packing washers for each end.

Rm{William Robotham - Chief Engineer}/Std.
  
  


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