. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . uch solu-tion in the paper while it remains in a moistcondition, thus insuring the proper mark andemploying but a small quantity of solution. I am aware that the strip of paper has beenmoistened in a narrow line by a roller im-mersed in the chemical solution, so as to ap-ply the same to the paper before coming intoposition to receive the mark; but the paperoffers a great resistance to the current, notbeing moistened entirely through by the timeit reaches the stylus. By employing circuit-points at the surface at oppo
. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . uch solu-tion in the paper while it remains in a moistcondition, thus insuring the proper mark andemploying but a small quantity of solution. I am aware that the strip of paper has beenmoistened in a narrow line by a roller im-mersed in the chemical solution, so as to ap-ply the same to the paper before coming intoposition to receive the mark; but the paperoffers a great resistance to the current, notbeing moistened entirely through by the timeit reaches the stylus. By employing circuit-points at the surface at opposite sides of themoistened line this is avoided. I claim as my invention— The circuit-points or electrodes o o, connectedwith the wires % I and applied at each side ofthe line of chemical solution upon the surfaceof the paper, substantially as set forth. Signed by me this 7th day of March, A. THOMAS A. EDISON. Witnesses: Geo. T. Pinckney,Chas. H. Smith. 2 Sheets — Sheet 1 . T. A. for Automatic Telegraphs. No. 141,775. Patented August 12, 2 Sheets — Sheet 2 . T. A. for Automatic Telegraphs. No. 141,775. Patented August 12, 1873.
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Keywords: ., boo, bookcentury1800, booksubjectinventions, booksubjecttelephone
