. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . AM. PHOTO-LITHOGRAPHIC GO. OSSORVfS PROCESS.) 128,131 United States Patent Office. THOMAS A. EDISON, OF NEWAEK, NEW IN PRINTING-TELEGRAPHS. Specification forming part of Letters Patent No. 128,131, dated June 18, 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 Magnetic Telegraphs, and the following isdeclared to be a correct description of thesame. The ordinary magnetic telegraph i
. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . AM. PHOTO-LITHOGRAPHIC GO. OSSORVfS PROCESS.) 128,131 United States Patent Office. THOMAS A. EDISON, OF NEWAEK, NEW IN PRINTING-TELEGRAPHS. Specification forming part of Letters Patent No. 128,131, dated June 18, 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 Magnetic Telegraphs, and the following isdeclared to be a correct description of thesame. The ordinary magnetic telegraph is providedwith a lever and point, the latter being held incontact with the paper to make a mark there-in. In this case the magnetic energy must besufficiently powerful to give the required press-ure of the point on the paper. My invention is made for giving a record byembossing the paper in a waving or zigzagline, by pressure between a rigid and an elasticroller, by means of a cord or chain that is po-sitioned by the action of an the magnet is not charge
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Keywords: ., boo, bookcentury1800, booksubjectinventions, booksubjecttelephone
