[D7941ZGK], Letter from Thomas Alva Edison to Edward Hibberd Johnson, October 18th, 1879
https://edisondigital.rutgers.edu/document/D7941ZGK
→ View document with UniversalViewer
→ View document on Archive.org
→ Re-use this digital object via a IIIF manifest
Title
[D7941ZGK], Letter from Thomas Alva Edison to Edward Hibberd Johnson, October 18th, 1879
Editor's Notes
"Owing resistance transmitter knock harmless. Regular transmitter, powerful knock eventually destroys chalk, louder chalk quicker destruction. We always used new push hence bug unsuspected. Temporary expedient, new push, reverse chalk holder, polish new groove, gradually. New device allows interruption merely weakens knock."
Author
Recipient
Date
1879-10-18
Type
Subject
Folder/Volume ID
D7941-F
Microfilm ID
52:825
Document ID
D7941ZGK
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University