[D8801AAT], Letter from Arthur Edwin Kennelly to Alfred Ord Tate, July 2nd, 1888


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[D8801AAT], Letter from Arthur Edwin Kennelly to Alfred Ord Tate, July 2nd, 1888

Editor's Notes

"With reference to the Fitch battery we have already given it (two separate cells) a trial. The E.M.F. at starting was [unclear] volt nearly but after an hour and a half fell to 0.5 volts, the external resistance being one ohm. After 72 hours the EMF was 0.2 volts and the internal res: 1.5 ohms. I showed the curve of observations to Mr. Edison. The cell under such conditions are quite inadequate to his requirement. At the same time it is only fair to say that the form and dimensions of the cell are quite inadequate to the demand of the phonograph motor, and I am of opinion that the chemical action of the battery is not suited to the work under any conditions of extra plates + larger cells. Still if Mr. Fitch believes that his battery can do the work let him supply at net cost the carbons and the excitant in what he deems to be sufficient quantity and we will find zinc and outer cells and give it a fair trial. If we find the carbons, you see from his note that he will not be satisified as to the conditions." I remain, Yours very truly, A.E. Kennelly





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