. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . N. PETERS, P1)oto-Lithographer, Washington, D. N. PETERS. PhotoLithographer. Washington. D. C United States Patent Office, THOMAS A. EDISON, OF NEWARK, NEW JERSEY, ASSIGNOR TO GOLD ANDSTOCK TELEGRAPH COMPANY, OF NEW YORK CITY. IMPROVEMENT IN PRINTING-TELEGRAPHS. Specification forming part of Letters Patent No. 120,531, dated May 7, 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 Improvement inPrinting-Telegraphs; an
. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . N. PETERS, P1)oto-Lithographer, Washington, D. N. PETERS. PhotoLithographer. Washington. D. C United States Patent Office, THOMAS A. EDISON, OF NEWARK, NEW JERSEY, ASSIGNOR TO GOLD ANDSTOCK TELEGRAPH COMPANY, OF NEW YORK CITY. IMPROVEMENT IN PRINTING-TELEGRAPHS. Specification forming part of Letters Patent No. 120,531, dated May 7, 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 Improvement inPrinting-Telegraphs; and the following is de-clared to be a correct description of the same. This telegraph is made for printing from oneof two type-wheels. The type-wheels are con-tiguous, and revolved by separate ratchetsand pawls, or step-by-step motions, and a mag-net is employed to operate a bolt that connectsone of the step-by-step movements with thelever and armature of an electro-magnet, anda latch holds the parts thus connected. Thislatch is lifted every rotation of the locked let-ter type-wheel, hence is unlocked, and a springcauses the
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Keywords: ., boo, bookcentury1800, booksubjectinventions, booksubjecttelephone
