[LB020234], Letter from Thomas Alva Edison to N.Y. State. Aqueduct Commission, Henry Smith Craven, April 9th, 1885
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Title
[LB020234], Letter from Thomas Alva Edison to N.Y. State. Aqueduct Commission, Henry Smith Craven, April 9th, 1885
Editor's Notes
"When click on doc get 20232, have to advance one image to get right doc] [This is based on TAE marg: D8503ZAB1] "Referring to your favor of 4th inst. We manufacture one candle lamps and I am at the present moment experimenting on a battery to be carried on the person. I intended it for the use of Coal Miners but it would also suit your purpose. I expect whithin a month to produce some ting practicable and will let you know when it is ready. A plumb line of fine platina wire could be rendered visible if you had a Dynamo or electric Light Plant at the top of the shaft and wires running into the tunnel. It would take a great deal of power. Perhaps by using a large cont? control with luminous paing and igniting a peice of magnesium wire for an instant light enough might obtained. I think such a light would last from a half to one hour and if the tunnes was very dark it would shine out plain and distinct."
Author
Date
1885-04-09
Type
Folder/Volume ID
LB020-F
Microfilm ID
83:137
Document ID
LB020234
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University