. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . electro-magnet for operating the lock-ing-bolt, in combination with the said levers,step-by-step movements, and type-wheels, sub-stantially as set forth. 3. The latch o for holding the bolt i un-latched by the cam 3 upon the type-wheelshaft, in combination with the armature andlevers to actuate the type-wheels, substantiallyas set forth. 4. The circuit-closing springs s or t, sepa-rated by th e n o n - cond u cti ng pi n u p o n t h e ty pe -wheel shaft, in combination with an electro-magnet for directing the pulsat
. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . electro-magnet for operating the lock-ing-bolt, in combination with the said levers,step-by-step movements, and type-wheels, sub-stantially as set forth. 3. The latch o for holding the bolt i un-latched by the cam 3 upon the type-wheelshaft, in combination with the armature andlevers to actuate the type-wheels, substantiallyas set forth. 4. The circuit-closing springs s or t, sepa-rated by th e n o n - cond u cti ng pi n u p o n t h e ty pe -wheel shaft, in combination with an electro-magnet for directing the pulsation throughthat magnet when the pin is between thesprings, substantially as specified. 5. The arrangement of circuit-connections,substantially as set forth, for actuating eitherof three electro magnets in one main telegraphline, for moving one of two type-wheels andeffecting the printing, substantially as setforth. Signed by me this 17th day of January, 1872. T. A. EDISON. Witnesses: Geo. D. Walker,Geo. T. Pinckney. THOMAS A. in N PETERS. PliQto-Uthographei. Washington. D. C. United States Patent OfficEo THOMAS A. EDISON, OF NEWABK, NEW JERSEY, ASSIGNOR TO GOLD ANDSTOCK TELEGRAPH COMPANY, OF NEW YORK CITY. IMPROVEMENT IN PRINTING-TELEGRAPHS. Specification forming part of Letters Patent No. 126,535, 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 and made an Im-provement in Printing-Telegraphs; and thefollowing is declared to be a correct descrip-tion of the same. In my present invention I make use of twotype-wheels, revolving with their shaft, andemploy an impression-pad with aslidingshield,in which is an opening. This shield can bechanged at certain points in the rotation of thetype-wheel, so as to allow the impression to bemade from one of the type-wheels through theopening in the shield, while the other is pre-vented from im
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Keywords: ., boo, bookcentury1800, booksubjectinventions, booksubjecttelephone
