. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . zero and in unison with thetransmitter, ready to be brought into actionby that instrument. The wheel a, when inuse, acts, by its lever e and pin m, to vibratethe lever 7i/, to rotate the ratchet-wheel V andbring the type-wheel a to unison. The printing-lever and its magnet are notshown in the drawing. They may be of anydesired character, and the magnet may be ina separate electric circuit or in a circuit to themagnets d or d. Ordinarily the change inoperating the type-wheels will take place atthe zero-points; hence
. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . zero and in unison with thetransmitter, ready to be brought into actionby that instrument. The wheel a, when inuse, acts, by its lever e and pin m, to vibratethe lever 7i/, to rotate the ratchet-wheel V andbring the type-wheel a to unison. The printing-lever and its magnet are notshown in the drawing. They may be of anydesired character, and the magnet may be ina separate electric circuit or in a circuit to themagnets d or d. Ordinarily the change inoperating the type-wheels will take place atthe zero-points; hence the levers h % will notbe operative unless these has been a loss inthe movement of the type-wheel that is thrownout of action. I claim as my invention— Two type-wheels separately revolved by astep-by-step motion, in combination with aseparate lever or levers operated by the mech-anism that is moving one type-wheel to set theother type-wheel, substantially as specified. Signed by me this 15th day of June, A. T. A. EDISON. Witnesses: Geo. T. Pinckney,Chas. H. United States Patent Office THOMAS A. EDISON, OF NEWAKK, NEW IN PRINTING-TELEGRAPHS. Specification forming part of Letters Patent No. 131,336, dated September 17,1872. 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 Improvementin Printing-Telegraph Instruments; and thefollowing is hereby declared to be a full andcorrect description of the same. In this instrument there are two type-wheels—one a letter-wheel, the other a figure-wheel—both revolving upon a shaft, and each sleeveor shaft and its wheel is actuated by a sepa-rate step-by-step movement. My invention relates to two type-wheel le-vers connected to^each other by yielding orspring arms, so that when one type-wheel le-ver is vibrated by its magnet and armature torotate its type-wheel, its spring-arm will actto vibrate the other type-wheel
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