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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).
Query regarding the design and proportions of heavy metal springs.

Identifier  WestWitteringFiles\B\February1918\  Scan3
Date  8th February 1918
  
R.R. 235 a (400 T) (S.C. 536. 15-2-16) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 1546.

ORIGINAL.

R8/W8.2.18. 2

To EFC. from R.{Sir Henry Royce}
c. to BJ.

X 1775 Re - Springs.

We are designing some springs of very heavy metal and we should be glad if you would inform us whether these are considered of a practical proportion, for instance, the ones in hand are made from 3/8" diameter rod, folded on a 3/4" mandrill, and are therefore only 1 1/2" outside. The/number of convolutions is in the neighbourhood of 4, and the space between the convolutions is about .1".

R.{Sir Henry Royce}

[STAMP] D RECEIVED 14 FEB 1918
  
  


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