[D8416AAJ], Letter from Thomas Alva Edison to Giuseppe Colombo, January 3rd, 1884


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[D8416AAJ], Letter from Thomas Alva Edison to Giuseppe Colombo, January 3rd, 1884

Editor's Notes

[SELECTABLE] I suppose you know of the financial success we are making of the central station downtown [gives receipts and operating figures. We have 120 customers on our books whom.we have refused as we are loaded. I have a "C" dynamo set up at Goerck Street with shortened cores. It gave 203 volts with no load, 350 revolution and with 1050 amperes gave at 140 volts. The spark is very much reduced. We carry such a load with 125 lbs of steam; it will run a porter engine down to 180 revoltutions so an Armington engine is neccesary. With the allteration the future is all right because I am going to make some high resistance lamps requiring about 125 volts, The change on on each machine will cost you about $575. You could easily have it done in Milan. Our lamps are about .75 ampere therefore you can carry about 1500 for a while when the lheavy load come on. # If you desire working drawings showing how to make the change we can make them for you. I think we shall net $60,000 in 1884.





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