. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . e been made use of5 but I am notaware that the ends of the line and of a shunt-circuit have been introduced in a liquid, andthe four ends so varied or adjusted in positionas to proportion the shunt and main-line cur-rents. I claim as my invention— 1, The resistance b and transmitting-instru-ment d, arranged in connection with the line,the battery a, and the rapid circuit-breaker c,as and for the purposes set forth. 2. Two or more styluses or pens connectedwith the main line and with shunt-circuits, inwhich are diffe
. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . e been made use of5 but I am notaware that the ends of the line and of a shunt-circuit have been introduced in a liquid, andthe four ends so varied or adjusted in positionas to proportion the shunt and main-line cur-rents. I claim as my invention— 1, The resistance b and transmitting-instru-ment d, arranged in connection with the line,the battery a, and the rapid circuit-breaker c,as and for the purposes set forth. 2. Two or more styluses or pens connectedwith the main line and with shunt-circuits, inwhich are differing magnets for operation up-on the chemical-receiving paper, as set forth. 3. The vessel of liquid receiving the twoends of the shunt-circuit and the two ends ofthe main line to vary the strength of the shunt-circuit according to the relative positions ofsuch circuit ends, as set forth. Signed by me this 12th day of December,A. D. 1872. THOMAS A. EDISCXN. Witnesses: Geo. T. Pinckney,Chas. H. Smith. No. 141,774. T. A. Telegraphs. Patented August 12, United States Patent Office. THOMAS A. EDISON, OF NEWARK, NEW JERSEY, ASSIGNOR TO HIMSELF ANDGEORGE HARRINGTON, OF WASHINGTON, DISTRICT OF COLUMBIA. IMPROVEMENT IN CHEMICAL TELEGRAPHS. Specification forming part of Letters Patent No. 141,dated August 12,1873; application filed March 13, 1873. To all whom it may concern: Be it known that I, Thomas A. Edison, ofNewark, in the county of Essex and State ofNew Jersey, have invented Improvement inChemical Telegraphs, of wbich the followingis a specification: My invention relates to a chemical telegraphin which the paper is moistened as it runsthrough the machine, and receives the markfrom the electric action upon the chemical in-gredients employed. I make use of a troughor pen similar to a paper-ruling pen, and Isupply to the same the chemical solution bya siphon, or otherwise, so that the strip ofpaper is moistened in a line immediately be-fore or at the time th
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