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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).
Promotional letter from Tungstone Accumulator Co., Ltd. regarding their batteries for car lighting and starting.

Identifier  ExFiles\Box 35\4\  scan 175
Date  25th January 1926
  
XJ830
TELEGRAMS: "TYPIFY, FLEET, LONDON."
TELEPHONE: CENTRAL 8157 (3 LINES).
SERIES OF PATENTS DESIGNS & TRADE MARK ISSUED OR APPLIED FOR IN THE CHIEF COUNTRIES OF THE WORLD.
BRITISH ORIGIN AND MANUFACTURE
ROBUST PLATES PERMIT CHARGE AND DISCHARGE WITH SAFETY AT CONTINUOUS HIGH RATES
The first Portable Ideal Planté Faure pure Lead Grid that has ever been Manufactured in any Country
TUNGSTONE Accumulator For all Trades
No Wood Separators between Plates.
No Celluloid or Ebonite Containers.
Each Plate fixed firmly and independently in the Acid Resisting Container.
High Pressure Die Cast Plates cannot be buckled.
The Paste by Machine Pressure is rivetted into Pure Lead Grid.
No Sediment space provided or necessary.
Metal Container Lids not Sealed, No Creeping.
Distributors for the Makers: Tungstone Patent High Pressure Die Casting Co. Works: Market Harborough
Standard 12 volt car starting, lighting and ignition battery, 54 plates, 4" x 4", 50 actual amp. hour at 20 hour rate regularly charged by a 12 volt 12 amp. Lucas dynamo after 2 years experimental road work, completed in 10 days 1,600 self starting tests of a 15.9 engine, including an intermittent series of starts from cold in winter—without previous cranking. During test the battery was subjected at intervals to dead short-circuiting tests by momentarily placing thick copper rod across outer terminals. Plates were undamaged. The battery continued to work as usual. The battery was a fixture on running board.
Tungstone Patented Seamless Indestructible Acid Resisting Metal Boxes and Commercial Utilities in various registered designs and shapes for all Trades and purposes. High Pressure Die Cast in one solid leak-proof piece. Non-corrosive, resists heat. Will not bulge or warp under electrical or mechanical stresses. Non-splitting. Enquiries invited.
Please address all communications to the Distributors' Sales Offices:
TUNGSTONE ACCUMULATOR CO., LTD., 3, ST.{Capt. P. R. Strong} BRIDE'S HOUSE, SALISBURY SQUARE, FLEET STREET, LONDON, E.C.4.
Directors: WILLIAM HADDON, B.Sc. Hons. (Chairman). J.{Mr Johnson W.M.} A.{Mr Adams} FULLILOVE. HUGH APPLETON. Technical Sales Manager.
Cheques payable to the TUNGSTONE ACCUMULATOR CO., LTD., crossed Midland Bank Ltd., Ludgate Hill, E.C.4.
Entirely of British Origin and Workmanship. World's Record Machine Pasted and Entirely Made by High Pressure Die Casting Machinery.
Our Ref........... HTA/MEW Your Ref. ............ 25..1..1926 19.....
Mr. Clarke,
Export Dept.
Rolls Royce Ltd.
D E R B Y.
Dear Sir,
We take this opportunity of sending you one of our Booklets covering the Tungstone Accumulator for car lighting and starting purposes, and have been recommended to bring this to your special notice by Mr. Bowring of your Epsom Training College, who is not only the personal friend of the writers but has shown considerable interest in the Tungstone Batteries.
A particular feature for Export purposes is their ability to be sent abroad in a dry state with a first partial charge, so that on arrival of the car at its destination all that is required is for the Battery to be filled with correct acid when it can be used for lighting the car, the starter being used after completion of the charge on the car.
We have already submitted a cell to Derby and no doubt you can easily refer to this for further information on this heading.
Yours faithfully,
TUNGSTONE ACCUMULATOR CO. LTD.
[Signature]
Director.
  
  


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