[LM302042], Letter from Edison Manufacturing Co, Alfred Ord Tate to Philadelphia and Reading Railroad Co, Elkanah Ralph Adams, December 26th, 1889
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Title
[LM302042], Letter from Edison Manufacturing Co, Alfred Ord Tate to Philadelphia and Reading Railroad Co, Elkanah Ralph Adams, December 26th, 1889
Editor's Notes
Replying to your letter of 21st instant in regard to working local sounders from our cells, we would suggest making three circuits, of 10 sounders each. Much of these circuits would require two of our cells, which would have an average life, according to the information which you gave me, of about two weeks, wich means 26 renewals per year. Each renewal would cost $1.14 per cell, or $6.84 for six cells, a total of $177.84 per year, representing the expenses of the battery for material. As for labor, it would require about half an hour to renew these 6 cells. This means 13 hours per year at 20 cents per hour, $2.60 per year for labor. We can, of course, run more than 10 sounders from one battery, but would advise making 3 circuits, so that in case of accident to one of these, it could be thrown over to one of the other two. For this work we would use our 600 ampere hour cell. We have just completed our model for this size, and I have not got the prices out yet, but I suppose they will cost you in the neighborhood of $4.000 per cell. I would, of course, give you the very lowest quotation possible, as I am doing in the case of your main line battery. Yours truly A O Tate For Edison Mag coy
Date
1889-12-26
Type
Subject
Folder/Volume ID
LM302-F
Microfilm ID
158:548
Document ID
LM302042
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University