The Papers of Thomas A. Edison
From Workshop to Laboratory, June 1873-March 1876
Publication Year: 1992
Published by: The Johns Hopkins University Press
Series: The Papers of Thomas A. Edison
Title Page, Frontispiece, Copyright, Dedication
Calendar of Documents
List of Editorial Headnotes
The mid-18705 were heady years for Thomas Alva Edison. He commanded the respect of the telegraph industry's corporate leaders; watched his own financial fortunes rise, sink, and rise again; fathered Thomas, Jr., his second child; and moved increasingly into the public eye—reviled as a...
Chronology of Thomas A. Edison, June 1873–March 1876
List of Abbreviations
1 June–September 1873: (Docs. 341–364)
At the end of June 1873 Edison returned from England, where he had demonstrated his automatic telegraph system to the British Post Office. During these demonstrations Edison successfully met the conditions set by British telegraph officials (under which the Post Office would cover the cost of the...
2 October–December 1873: (Docs. 365–389)
During the last months of 1873 Edison followed the lines of work he had pursued in the summer, spending most of his time in the laboratory and executing few new caveats or patent applications. In extensive chemistry experiments he focused his attention particularly on batteries and automatic...
3 January–March 1874: (Docs. 390–417)
Edison began 1874 as he had ended the previous year, concentrating much of his energy in the laboratory. However, he also turned to the task of producing a manuscript for the book on telegraphy he had begun to plan the previous winter.1 Although he had apparently done some writing in 1873, he now...
4 April–June 1874: (Docs. 418–448)
In the spring of 1874 Edison continued his work on automatic and domestic telegraphy, and he also renewed his efforts on the quadruplex. New endeavors also occupied his time. His ongoing experiments with automatic telegraphy led to the discovery of the electromotograph phenomenon, while experiments...
5 July–September 1874: (Docs. 449–494)
The summer of 1874 opened with Western Union making plans for a demonstration of the new quadruplex that would lead to the first public announcement in the New York Times on 10 July. At the same time, Edison and Prescott reached an agreement making Prescott co-owner of the related patent...
6 October–December 1874: (Docs. 495–524)
During the last three months of 1874 Edison needed money. His shop expenses were high,1 and the financial depression that had gripped the nation for more than a year now seriously affected the business of telegraph companies and their suppliers, Edison and Murray among them. Edison had to sell his...
7 January–March 1875: (Docs. 525–557)
As a result of his new arrangements with Jay Gould and the Atlantic and Pacific Telegraph Company, Edison began 1875 by severing his ties to Western Union and focusing his attention on automatic telegraphy. He immediately began to enjoy substantial financial benefits. Edison had essentially finished...
8 April–June 1875: (Docs. 558–590)
In the spring of 1875 Edison consolidated his new business and technical alliances and established a laboratory independent of his manufacturing facilities. He continued as electrician for the Atlantic and Pacific Telegraph Company, a position the company formalized in June. In this capacity he...
9 July–September 1875: (Docs. 591–634)
While experiments in the new laboratory took much of Edison's time during the summer, he was still occupied with old concerns and acquaintances. William Orton sought to bring Edison back into the Western Union fold by encouraging him to work on acoustic telegraphy. At the same time that the...
10 October–December 1875: (Docs. 635–703)
Edison spent the autumn of 1875 in his laboratory. He was no longer working actively for the Atlantic and Pacific Telegraph Company, and he turned his full attention to a handful of the many technologies he had determined to investigate at the time he divorced his laboratory from the shop. He dabbled in...
11 January–March 1876: (Docs. 704–737)
During the winter of 1876 Edison devoted his laboratory work principally to acoustic telegraphy. The electric-pen business grew, and by the end of March was taking all of Charles Batchelor's time. The etheric-force controversy drew in some new combatants and moved into the pages of the...
Appendix 1. Edison's Autobiographical Notes
Appendix 2. Charles Batchelor's Recollections of Edison
Appendix 3. The Dispute over the Quadruplex
Appendix 4. Edison's U.S. Patents, July 1873– March 1876
Page Count: 896
Publication Year: 1992
Series Title: The Papers of Thomas A. Edison
Series Editor Byline: Edited by Paul B. Israel et al. See more Books in this Series
MUSE Marc Record: Download for The Papers of Thomas A. Edison