[D8133ZAV], Letter from Edward Hibberd Johnson to Thomas Alva Edison, November 19th, 1881
https://edisondigital.rutgers.edu/document/D8133ZAV
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Metadata
- Title
- [D8133ZAV], Letter from Edward Hibberd Johnson to Thomas Alva Edison, November 19th, 1881
- Editor's Notes
- Sends copy of blue book Brush's patent in which he disclaims electroplating carbons. Calls TAE's attention to his method of maintaining field by "derived ckt. I thought this was old & everyone could use it." Asks if TAE planning to use derived ckt in central station plant; Johnson is under impression he doesn't. Shld we oppose Brush's patent, or let others do so? After all we have good relns w/ Brush, so recommends not. Cable me "Oppose Brush" if you think opposite. Johnson's recollection is that TAE excites field w/ separate machine. [I guess derived ckt is a form of self-excitation.] If so, hw ensure reliability, if exciting engine or dynamo fails? This cld take dn entire plant.
- Author
- Johnson, Edward Hibberd
- Recipient
- Edison, Thomas Alva
- Mentioned
- Brush, Charles Francis
- Date
- 1881-11-19
- Type
- Letter
- Folder ID
- D8133-F
- Microfilm ID
- 58:716
- Document ID
- D8133ZAV
- Publisher
- Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University
- Has Version
- Archive.org Viewer, Microfilm Series Reel 58
- License
- CC0 1.0 Universal