. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . AM. PHOTO-LITHOGRAPHIC CO. NX. (oSBORmS PROCESS) 2 Sheets — Sheet 2 T. A. Telegraphs, No. 140,487, Patented July 1, 1873,. - AM. PHOTO-LfTHOGRAPHICCO. NX (OSBORNES PROOES&, United States Patent Office. THOMAS A. EDISON, OE NEWABK. NEW JEBSEY, ASSIGNOB TO THE GOLDAND STOCK TELEGEAEH COMPANY, OE NEW YOEK, N. Y. IMPROVEMENT IN PRINTING-TELEGRAPHS. Specification forming part of Letters Patent No. 140,489, dated July 1, 1873 ; application filed February 18, 1873. To all whom it may concern: Be it known th
. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . AM. PHOTO-LITHOGRAPHIC CO. NX. (oSBORmS PROCESS) 2 Sheets — Sheet 2 T. A. Telegraphs, No. 140,487, Patented July 1, 1873,. - AM. PHOTO-LfTHOGRAPHICCO. NX (OSBORNES PROOES&, United States Patent Office. THOMAS A. EDISON, OE NEWABK. NEW JEBSEY, ASSIGNOB TO THE GOLDAND STOCK TELEGEAEH COMPANY, OE NEW YOEK, N. Y. IMPROVEMENT IN PRINTING-TELEGRAPHS. Specification forming part of Letters Patent No. 140,489, dated July 1, 1873 ; application filed February 18, 1873. To all whom it may concern: Be it known that I, Thomas A. Edisojn, ofNewark, in the county of Essex and State ofNew Jersey, have invented Improvements inPrinting-Telegraphs, of which the followingis a specification: la this improvement the transmission is ef-fected by pulsations through a break-wheel,relay-magnet, and main line; and as the pul-sation energizes the relay-magnet it closes alocal circuit to a type-wheel magnet that actsupon pallets to rotate the type-wheel and thebreak-wheel, and in so doing breaks the main-line circuit, and allows the main line to breakthe local, and the spring of the type-wheel ar-mature to draw the latter back, an
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Keywords: ., boo, bookcentury1800, booksubjectinventions, booksubjecttelephone
