[D8801AAK], Letter from Derick H Fitch to Thomas Alva Edison, May 31st, 1888


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[D8801AAK], Letter from Derick H Fitch to Thomas Alva Edison, May 31st, 1888

Editor's Notes

"I enclose a letter from Mr. Gilliland which will explain this shipment. I suggested to Mr. [unclear] that my perfect battery [unclear] is suitable cells would probably be [unclear] adapted to operating the Motor of your phonograph and this is the result. ### The cells herewith sent as samples, ore my regular open circuit cells, probably too small, hence not adapted or recommended for regular or practical use on your Motor, but they will give you some idea of the cleanliness, efficiency and durability of my [unclear]. You can of course ascertain the E.M.L from these and what the internal assistance would be in cells specifically designed fo and proportional to your Motor, and if you find the Excilant adapted to your wants, suitable cells can of course be provided in which to use it. ### This excitant is the result of many years of experiment and I think it is all which the name I have given it implies-the summit of all that is possible with any materials which chemistry has revealed, hence, perfect. ### In my experience very few of the plates found in the market give good results with it, hence, experiment with such plates would be likely to be unsatisfactory. ### It is a very clean material, absolutely free from waste or local action, has a good E.M. L. great endurance or relative working value. One pound will do about the same amount of work as 7lbs. Of chemically pure sulphate of copper under the most favorable conditions. I sell this open circuit form to larger uses at cells per 100 $36.00 + 9.00=45.00"




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Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University
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