. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . 3 Sheets — Sheet 3. T. A. Telegraphs. No. 140,488. Patented July 1, 1873,. United States Patent Office, THOMAS A. EDISON, OF NEWARK, NEW JERSEY, ASSIGNOR TO THE GOLDAND STOCK TELEGRAPH COMPANY, OF NEW YORK, N. Y. IMPROVEMENT IN PRINTING-TELEGRAPHS. Specification forming part of Letters Patent No. 140,, dated July 1, 1873 ; application filed May 10, 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 an Impr
. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . 3 Sheets — Sheet 3. T. A. Telegraphs. No. 140,488. Patented July 1, 1873,. United States Patent Office, THOMAS A. EDISON, OF NEWARK, NEW JERSEY, ASSIGNOR TO THE GOLDAND STOCK TELEGRAPH COMPANY, OF NEW YORK, N. Y. IMPROVEMENT IN PRINTING-TELEGRAPHS. Specification forming part of Letters Patent No. 140,, dated July 1, 1873 ; application filed May 10, 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 an ImprovementIn Printing-Telegraphs, of which the followingis a specification : I In this machine there is a circuit-breakerdriven by an electric engine, and this pulsatormakes and breaks the circuit of the main lineand causes all the type-wheels in the circuitto revolve in unison through the agency of anelectro-magnet and step-by-step a key at the transmitting-station is de-pressed it stops the circuit-breaker and arreststhe movement of the type-wheels. At eachstation is a local battery that is brought intoaction by the cessation in the movement ofthe t
Size: 1358px × 1840px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., boo, bookcentury1800, booksubjectinventions, booksubjecttelephone
