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Letter from a battery manufacturer discussing charging rates, generator output, and cell materials.


Identifier  ExFiles\Box 54\2\  Scan080
Date  18th December 1925
  
X4627

DIRECTORS.
SIR ARCHIBALD. G. {Mr Griffiths - Chief Accountant / Mr Gnapp} GOLD.
F.C. GRAHAM MENZIES
G.R.N. MINCHIN.

WILLIAM PETO.
C.R.D. PRITCHETT.
T.W. PRITCHETT.

Telephone Nº. RAINHAM 34.
Telegrams: "PRITCHETT, DAGENHAM"
CODES USED: BENTLEYS, OR A.B.C. 5TH EDITION.

PRITCHETT & GOLD AND E. {Mr Elliott - Chief Engineer} P. S. COMPANY, LIMITED.
WITH WHICH IS INCORPORATED THE BUSINESS OF
PETO & RADFORD. ESTABLISHED 1882.
MANUFACTURERS OF STORAGE BATTERIES.

LONDON OFFICE.
50, GROSVENOR GARDENS.
VICTORIA, LONDON, S.W.1.

Please reply to
Dagenham Dock,
Romford, ESSEX.
Station: Dagenham Dock, (Mid. Rly. Tilbury Section)

YOUR REFERENCE
OUR REFERENCE KP/4.

18th December, 1925.

E. {Mr Elliott - Chief Engineer} Fowler Clark Esq.,
Messrs. Rolls-Royce Ltd.,
Derby.

Dear Mr. Fowler Clark,

I thank you for your letter of the 16th inst. which has been forwarded from our London Office. Will you please address any further communications to Dagenham Dock?

I can confirm Mr. Minchin's statement that there was apparently not much difference in the charging rate on his car with the Exide battery fitted, but I agree with you that it must exist when observed under comparable conditions. From the figures you gave us the charging rate on a P. & R. {Sir Henry Royce} would be about 10% higher than the Exide. I also agree that in a general way the P. & R. {Sir Henry Royce} charging P.D. is higher and it is desirable to effect a reduction, which I think can be done.

I am glad to note that you have arranged to reduce the peak generator output in future chassis, which I think is a satisfactory compromise having regard to the varied requirements of battery service.

With regard to the celluloid cells in your house, when I referred to the risk of fire I had in mind cases where this had occurred with celluloid cells leaking when on charge on D.C. mains. On further consideration, I am inclined to

-1-

Yours sincerely,
F. {Mr Friese} Preston.
  
  
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).


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