. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . composed of two small andan intermediate large perforation, as specified. 2. A perforating mechanism composed ofthree punches in combination with two keys,arranged substantially as specified, so that all 2 132 three punches will be actuated by one key andonly one by the other key, as set forth. 3. A feeding-roller actuated by a lever andpawl in combination with the perforatiug-punches and keys, and intervening mechanismfor regulating the movement of the lever inproportion to the length of feed-movementrequired for t
. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . composed of two small andan intermediate large perforation, as specified. 2. A perforating mechanism composed ofthree punches in combination with two keys,arranged substantially as specified, so that all 2 132 three punches will be actuated by one key andonly one by the other key, as set forth. 3. A feeding-roller actuated by a lever andpawl in combination with the perforatiug-punches and keys, and intervening mechanismfor regulating the movement of the lever inproportion to the length of feed-movementrequired for the paper. 4. The notched slide t in combination withthe lever p and keys for spacing the distance ,456 between the perforations, substantially as setforth. 5. The finger x actuated by the key w incombination with the pawl n and paper-feed-ing lever p, substantially as set forth. Signed by me this 15th day of March, 1872. T. A. EDISON. Witnesses: Geo. T. Pinckney,Ohas. H. Smith. T. A. EDISON. improvement in Electrical Printing-Machines. No. 133,019. _ Patented Nov. 12, AM. PHOTO-LITHOGRAPHIC , t (OSBQRNES PROCESS.) United States Patent Office. THOMAS A. EDISON, OP NEWAEK, NEW JEESEY, ASSIGNOE TO HIMSELFAND GEOEGE HAEEINGTON, OF WASHINGTON, DISTEIOT OF COLUMBIA. IMPROVEMENT IN ELECTRICAL PRINTING-MACHINES. Specification forming part of Letters Patent No. 133,019, dated November 12,1872. 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 Electrical Printing-Machines; and the fol-lowing is declared to be a correct descriptionthereof. This invention is intended for printing upona strip or sheet of paper by a type-wheel, sothat messages, instead of being written, canbe printed off by touching finger-keys. Themachine is also available for printing copiesof documents or composing and printing in-stead of writing. I make use of a type-wheel upon a shaft thatalso carries an a
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