[LB009255], Letter from Thomas Alva Edison to Charles Batchelor, November 2nd, 1881


View document with UniversalViewer   → View document on Archive.org  → Re-use this digital object via a IIIF manifest


[LB009255], Letter from Thomas Alva Edison to Charles Batchelor, November 2nd, 1881

Editor's Notes

Referring to your request for the prices of the various articles used in my system of Electric Lighting. I beg to state as follows.##The cost of the lamp is thirty eight cents although under my contract with the Edison Electric Light Co I am compelled to sell at thirty five cents to them. But as the people get more expert the prices will come down.##The estimate of the cost of the tubes and the laying of the same is as follows.##Estimated and actual net cost prices. [List follows]##The cost of the Dynamo machines and motors is as follows.##60 light dynamo $880.00 (when general expenses are proper or [---] but 480 to 475 for first 200 or 350 machines##Standard dynamos for central station including engine $5,400 (This will depend on the prices of copper iron and the number made at [once]) [list follows]##When made in lots of 100 and reasonable mineral expense Meters will cost about $400. We cannot give the actual cost of sockets as we obtain them from outside parties. We pay 85 cts for sockets with cocks & 45c. without cocks##Estimate for Central Station outfit for 1000 H.P. plant [list follows]##The above prices are by contract with outside parties, who make about 33 per cent.##This estimate does not include the foundations for iron structure or alterations in the building but with some buildings the iron structure will be unnecessary.##Further information furnished if you ask in detail







Folder/Volume ID


Microfilm ID


Document ID



Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University
Download CSV | JSON