. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . 4 Sheets—Sheet 3. Patented Jany 23, 1872, M PETERS, Photo-Lithographer. Washington. D. C. 4 Sheets—Sheet 4, T. A. EDISON. Telegraph Apparatus. Patented JarVy 23, N. PETERS, Photo; Lithographer, Washington, D. C. United States Patent Office. THOMAS A. EDISON/, OF NEWARK, NEW JEESEY, ASSIGNOR TO THE GOLDAND STOCK TELEGRAPH COMPANY,7 OF NEW YORK CITY. IMPROVEMENT IN TELEGRAPH APPARATUS. Specification forming part of Letters Patent No. 1583,005, dated January 233 1872. To all whom it may concern : Be it known tha
. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . 4 Sheets—Sheet 3. Patented Jany 23, 1872, M PETERS, Photo-Lithographer. Washington. D. C. 4 Sheets—Sheet 4, T. A. EDISON. Telegraph Apparatus. Patented JarVy 23, N. PETERS, Photo; Lithographer, Washington, D. C. United States Patent Office. THOMAS A. EDISON/, OF NEWARK, NEW JEESEY, ASSIGNOR TO THE GOLDAND STOCK TELEGRAPH COMPANY,7 OF NEW YORK CITY. IMPROVEMENT IN TELEGRAPH APPARATUS. Specification forming part of Letters Patent No. 1583,005, dated January 233 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 and made an Im-provement in Printing-Telegraphs; and the fol-lowing is declared to be a correct descriptionthereof. This instrument I term the Universal Print-ing-Telegraph ; and it is intended as a trans-mitting and as a receiving instrument. Whenused as atransmitting-instrunient,asmallinag-netic motor, driven by a local battery, makesand breaks the main circuit, and the pulsationsoperate through a magnet in the transmitting-machine, and also in the receiving machine ormachines, to rotate the type-wheel by a step-by-step movement, and the type-wh
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Keywords: ., boo, bookcentury1800, booksubjectinventions, booksubjecttelephone
