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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).
Comparison of two types of battery terminals from Exide cells, recommending the original type.

Identifier  ExFiles\Box 54\2\  Scan197
Date  3rd September 1929
  
Typed Text:
X4617E.
By
Mx {John H Maddocks - Chief Proving Officer} /MdM/T3.9.29.

RE BATTERIES.

We send you herewith samples of Battery Terminals from Exide cells.

No.1 is as fitted on original type batteries. It will be noted that the terminal stud is moulded in the lug about 1" and includes part of the threaded portion. It also has 2 pins.

No.2 is of the later type and only retained in lug about 3/8" and by one pin, if a pin at all.

We find the No.2. type frequently pull out as has done [redacted] the sample sent you. We consider No.1 type to be much the better.

Mx {John H Maddocks - Chief Proving Officer} /MdM
[Signature]

Handwritten Text:
F Dept
Please let us see these two methods of fixing?
? (next to the No.2 description)
  
  


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