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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).
Specification to change the thickness of dynamo armature stampings to reduce iron loss.

Identifier  ExFiles\Box 60\4\  Scan210
Date  9th February 1934
  
r6099

By/RD. From Hs{Lord Ernest Hives - Chair}/Wst.

Hs{Lord Ernest Hives - Chair}/Wst.7/MA.9.2.34.

DYNAMO ARMATURE STAMPING.

We should specify .014" thick stampings on the drawing as we have definitely proved these to reduce the iron loss in the armature core as compared with .028" stampings.

Hs{Lord Ernest Hives - Chair}/Wst.
  
  


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