. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . station marked Washington, in order that adrop copy may be taken at that point. At the station marked Lynchburg the elec-tro-magnets h are placed in a branch or groundcircuit, and the amount of the leakage regu-lated by the resistance of the magnets them-selves, or of arheostat,thereby conveying away,designedly, the proper portion of the currentintermediately between the sending and the receiving station; and when the circuit of themain line is broken the electro-magnets set upa counter-current in the line as they d
. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . station marked Washington, in order that adrop copy may be taken at that point. At the station marked Lynchburg the elec-tro-magnets h are placed in a branch or groundcircuit, and the amount of the leakage regu-lated by the resistance of the magnets them-selves, or of arheostat,thereby conveying away,designedly, the proper portion of the currentintermediately between the sending and the receiving station; and when the circuit of themain line is broken the electro-magnets set upa counter-current in the line as they dischargethemselves, thereby freeing the line at one ormore places, as circumstances claim as my invention-One or more electro-magnets, arranged in alocal or branch circuit, substantially as setforth, in combination with a chemical tele-graphic receiving instrument, for the purposesset forth. Signed by me this 9th day of November,1872. THOMAS A. EDISON. Witnesses: Geo. D. Walker,Geo. T. Pinckney. T. A. Telegraphs. No, 138,869. Patented May 13, AM. PHOTO -LITHD GRAPHIC CO. N. Y.(OSBORNES PROCESS.) United States Patent Office. THOMAS A. EDISON, OF NEWABK, NEW IN PRINTING-TELEGRAPHS. Specification forming partof Letters Patent No. 138,869, dated May 13, 1873; application filed October 22, 1872. 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 an Improvementin Printing-Telegraphs, of which the follow-ing is a specification: This invention relates to modifications ofand improvements upon the printing - tele-graph machines heretofore patented by features of improvement relate, first, toa unison mechanism that operates after twoor more revolutions of the type-wheel, but isliberated and restored to a normal positioneach time the printing-lever is moved; second,to a peculiar paper-feeding mechanism thatthrows a tooth or pawl upon the paper, an
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