Rolls-Royce Archives
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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).
Suggestions for preventing corrosion on terminal posts by using different materials and design modifications.

Identifier  ExFiles\Box 168b\3\  img233
Date  12th October 1929 guessed
  
II
JD.{J. Draper - Frames}33.
in future to ensure that these are fitted on every terminal post & also filled with petroleum jelly.
I also suggest that the brass locking washer, which locks direct on to the lead post, should be more heavily lead coated (say .010" thick) or made entirely of lead or lead & antimony. The corrosion seems to start at this point.
There appears to be sufficient space hereat to allow of these washers being made much thicker than now.
A further improvement in the design of the cell cover may be effected to help in the prevention of corrosion.
My suggestion is this:
The top of the vent hole should be brought down to a lower level by about ½". I think there is
(contd?)
  
  


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