[D8636J], Letter from John F Ott to Thomas Alva Edison, June 23rd, 1886
https://edisondigital.rutgers.edu/document/D8636J
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Metadata
- Title
- [D8636J], Letter from John F Ott to Thomas Alva Edison, June 23rd, 1886
- Editor's Notes
- Here are the results of experiment on discharge of magnet in a bridge [provides diagram; gives info on 6 experiments varying motor speed, closing current on bridge, and "braking" current on bridge]; if the drum is geared even instead of 3 to 1 it gives better curve;###Made Ries Telephone you described for R.R. Tel.; tone about half as loud as tuning fork; points don't "separate enough to make distinct brake," get half the discharge of coil (half EMF).###Making another device for better amplitude,###Made device on phonoplex to prevent operators buckling diaphragm, with lever as you suggested, used a screw, which is best and costs least.###Tate wants me to have Bergmann put this new attachment on phones; have done so unless you countermand.
- Author
- Ott, John F
- Recipient
- Edison, Thomas Alva
- Date
- 1886-06-23
- Type
- Letter
- Folder ID
- D8636-F
- Microfilm ID
- 79:1056
- Document ID
- D8636J
- 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 79
- Item sets
- [D8636-F] (D-86-36) New York Laboratory