Telegraph Register. In 1850 William S. Thomas received U. S. patent #7,092 for his “telegraphic register.” This model demonstrated his method of using the heat generated by an electric current to record Morse code signals. Thomas designed a system that electrically heated two platinum points.

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Size: 1865px × 1339px
Photo credit: © SBS Eclectic Images / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: electricity, industry, work