[D7919ZEF], Letter from Jacob C Rogers to Thomas Alva Edison, December 27th, 1879
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Title
[D7919ZEF], Letter from Jacob C Rogers to Thomas Alva Edison, December 27th, 1879
Editor's Notes
Light Co. stockholder and friend of Fabbri was in party to see TAE recently; has more questions. Is the carbon imperishible? Marg: "No change after 208 hours burning. Cannot conceive how it can be improved." Will expansion/contraction destroy globe? Marg: "Expansion & contraction is slow. [illeg]. When carbon breaks, can fresh lamp be substituted? Extensive marg: "....so far there are 21 lamps that have burned 152 hours without change and 3 lamps 208 hours without change...." Replacement lamps to be inserted in socket: "...we have a new socket so a child can replace a lamp."
Author
Recipient
Mentioned
Date
1879-12-27
Type
Folder/Volume ID
D7919-F
Microfilm ID
50:190
Document ID
D7919ZEF
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University