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Postscript detailing a screw failure due to badly formed spring washers and recommending material and length changes.


Identifier  WestWitteringFiles\I\September1922\  Scan42
Date  4th October 1922
  
R.R. 235 A. {Mr Adams} (100 T.S/F.835 6-8-19) G 2460.

(3)

P.S. With reference to this section dealing with spring WASHERS, it was found on the model we received here that the head of one of the screws had been burst from the shank by the uneven loading exe(Aero Engine)rted upon it by these badly formed spring washers.

We think that the screws holding on the terminal tabs should be made of steel, and should be .075 longer than as shewn on the model. This extra length also applies to those screws securing the terminal posts to the back of the bakelite block.

Hs {Lord Ernest Hives - Chair}
OCT 4 1922
R. {Sir Henry Royce}
RECEIVED
  
  
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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