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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).
Letter concerning the design of 6-volt unit batteries for the Phantom II chassis, specifically cell connections.

Identifier  ExFiles\Box 168b\3\  img105
Date  15th February 1930
  
X75358

EFC4/AD.
15th February, 1930.

The Chloride Electrical Storage Co.
Clifton Junction,
Nr. Manchester.

Dear Sirs,

6-volt unit batteries for Phantom II chassis.

Further to ours of the 13th inst. ref. EFC3/AD, though now with reference to a somewhat different matter namely that of the design of the cell lids.

Yourselves in common with Messrs. P & R, have consistently advocated with us a feature on the batteries to which we have so far not agreed, for instance the use of burnt up in place of bolted cell to cell connections. Our main reason for disagreement has been the fact that the different expansions of the solid lead connectors and the ebonite material of the cell cases and cell lids is not conducive to permanent satisfaction where the cell lugs pass through the lids. You may know that the P & R Co. have now introduced in their cells a terminal gland comprising both a vaseline and rubber gland. This results in the provision of a certain amount of freedom which would be sufficient to negative the argument against the use of burnt up connections. Our query at the moment is to ask you for your comments on our suggestion that you should also provide a similar form of gland for the present with the cell to cell connections as they are, but ultimately with the possibility under consideration by all of us of the use of burnt up in place of bolted connections.

We put this matter to Messrs. P & R and have a letter from them to the effect that they have no objections to our making this suggestion to yourselves. They also remark that if you do make this modification it would be better if you adopted their dimensions of cell lids to render these interchangeable.

Yours faithfully,

FOR ROLLS-ROYCE LIMITED.
  
  


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