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Producing a new Breech Cross Shaft with improved material and hardening.


Identifier  ExFiles\Box 176\3\  img113
Date  31th July 1940
  
To Rm. {William Robotham - Chief Engineer} from HPS. {Horace Percy Smith - Experimental Factory Mgr}

2a

HPS. {Horace Percy Smith - Experimental Factory Mgr} 9/VS. {J. Vickers} 31.7.40.

As requested, we have produced a new Breech Cross Shaft in new material, S/ZN cyanide hardened, against the one which is now in mild steel, so this should be a very big improvement.

I thought you would like to know in case someone raises the question as to the failure.

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HPS. {Horace Percy Smith - Experimental Factory Mgr}
[Signature]
  
  
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).


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