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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).
Design and manufacture of damper control bellows.

Identifier  ExFiles\Box 151\2\  scan0249
Date  15th June 1934
  
y4698
To BY. {R.W. Bailey - Chief Engineer} from HDY. {William Hardy}
c.c. Mr. E. {Mr Elliott - Chief Engineer} Hs. {Lord Ernest Hives - Chair} [redacted]
MDY.2/HP.15.6.34.
Damper Control Bellows.
--------------------
N. Sch.4034 herewith shows bellows for the damper control with stops to limit the compression and the guide which is at present provided for the bellows deleted.
The makers of the bellows have been consulted as to their preference for the adjustable or non adjustable schemes and they prefer the adjustable as shown by fig.2.
The intention is that the bellows makers should make the adjustment and solder in place so that as delivered by them the bellows unit will have very little variation of the overall length in the free position and of the amount of compression.
HDY. {William Hardy}
  
  


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