. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . the pulsations areset up as before. The time that the spring uis in contact with the circuit-screw 14 is mo-mentary, except when there is a pause by de-pressing one of the keys; hence the printing-magnets will only be energized at that time. I claim as my invention— 1. The combination of the type-wheel, pal-let-wheel, circuit-wheel /«-, and pallets with thecircuits 2 and 3 and electro-magnets m and/, 2 140 substantially as set forth, for automaticallyopening and closing the respective circuitsand rotating the type-w
. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . the pulsations areset up as before. The time that the spring uis in contact with the circuit-screw 14 is mo-mentary, except when there is a pause by de-pressing one of the keys; hence the printing-magnets will only be energized at that time. I claim as my invention— 1. The combination of the type-wheel, pal-let-wheel, circuit-wheel /«-, and pallets with thecircuits 2 and 3 and electro-magnets m and/, 2 140 substantially as set forth, for automaticallyopening and closing the respective circuitsand rotating the type-wheels, as set forth. 2. The printing-circuit closed by the springu of the pallet-lever when the circuits 2 and 3are broken, and the movement of the type-wheel arrested by the depression of a finger-key, in combination with the. pallets that aremoved by the spring and close the type-wheel ,487 circuit when the finger-key is released, sub-stantially as set forth. Signed bvme this 13th day of Februarv, 1873. THOMAS A. EDISON. Witnesses: Geo. T. Pinckney,Ohas. H. AM. rHOTO-UTHOmiWIC CO H Y OSBOHNES PROCSSS) 3 Sheets — Sheet 2, T. k. Telegraphs. No. 140,488, Patented July 1, 1873.
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Keywords: ., boo, bookcentury1800, booksubjectinventions, booksubjecttelephone
