[D8954AEI], Letter from Justus Bulkley Entz to Samuel Insull, December 12th, 1889
https://edisondigital.rutgers.edu/document/D8954AEI
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- Title
- [D8954AEI], Letter from Justus Bulkley Entz to Samuel Insull, December 12th, 1889
- Editor's Notes
- Patents New York Dec 12th 1889 1065 Madison Ave Mr. Samuel Insull####Dear Sir:--I wish to dispose of my interest in the multi polar Marine dynamo, which I assigned to Mr. Edison for a royalty of 19, one per cent. on the selling price-- This machine when run at the same temperature and surface speed as the Standard Edison dynamo, will weight only one half as much. From some rough figures I have made on a machine for central station work. [Moving?] the output of an Edison "Co" 150000 watts. I get the following result at 180 Revs--40 [degrees] C rise of temp. the machine weigh 20 000 lbs. and will stand having half load thrown off and on ---- out moving the broken or sparking--I will sell my interest in this dynamo for $12000--Twelve thousand dollars--and would also like to dispose of my interest in the unipolar dynamo which I also assigned to Mr. Edison for one per cent. There has never been ----- one of these, and so I am unable to say exactly what it can do. Yours very truly Justus B Entz
- Author
- Entz, Justus Bulkley
- Recipient
- Insull, Samuel
- Mentioned
- Edison, Thomas Alva
- Date
- 1889-12-12
- Type
- Letter
- Folder ID
- [D8954-F] Document File Series -- 1889
- Microfilm ID
- 127:342
- Document ID
- D8954AEI
- Publisher
- Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University
- License
- CC0 1.0 Universal
- Has Version
- Archive.org Viewer, Microfilm Series Reel 127
- Item sets
- [D8954-F] (D-89-54) Patents