Identifier: CollectionUnitev1Edis (find matches)
Title: Collection of United States patents granted to Thomas A. Edison, 1869-1884
Year: 1869 (1860s)
Authors: Edison, Thomas A. (Thomas Alva), 1847-1931 Peters, N. (Norris), lithographer Hammer, William Joseph, 1858-1934, former owner. DSI Edison, Thomas A. (Thomas Alva), 1847-1931, inscriber. DSI United States. Patent Office
Subjects: Catalogs Patents Edison, Thomas A. (Thomas Alva), 1847-1931 Inventions Telegraph Electric machinery Electric apparatus and appliances Phonograph Telephone Motors Catalogs Patents Catalogs Patents Catalogs
Publisher: Washington, D.C. : U.S. Patent Office
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries

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g couldnot be accomplished by one group of punchesto perforate any letter by selecting punchesfrom that group. Furthermore, the slots un-der the paper are liable to tear. I claim as my invention— 1. A strip of telegraphic transmitting-paperperforated with holes of uniform size, groupedtogether to represent ordinary letters or fig-ures, substantially as set forth. 2. The mechanism for making groups of per-forations in a strip of paper in imitation of let-ters or characters, the same consisting ofpunches massed together in a square, ornearly so, and mechanism intervening betweensuch punches and the finger-keys, for select-ing from such mass of punches those that arerequired for perforating characters correspond-ing with the characters upon the respectivefinger-keys, substantially as set forth. Signed by me this 25th day of August, A.D. 1873. THOMAS A. EDISON. Witnesses: Geo. T. Pinckney,Ohas. H. Smith. T. A. EDISON.District Telegraph Signal-Boxes. No. 154,78 8. Patented Sept. 8, 1874.
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THE GRAPHIC-CO. PHOTO-LITH.39&41 PARK PLACE,N.Y. United States Patent Office. THOMAS A. EDISON, OF NEWABK, NEW JEBSEWIMPROVEMENT IN DISTRICT TELEGRAPH SIGNAL-BOXES. Specification forming part of Letters Patent No. 154,588, dated September 8,1874 ; application filed May 11,1874. Case 86. To all whom it may concern: Be it known that I, Thomas A. Edison, ofNewark, in the county of Essex and State ofNew Jersey, havented an Improvement in Dis-trict Telegraphic Alarm and Signal Appara-tus, of which the following is a specification : Devices have heretofore been made inwhich a lever is depressed to send a telegraph-ic signal to a central office, and indicate anumber that is allotted to the building send-ing the signal, and understood as a call for amessenger, or another number by anotherlever for a call for police or for11 fire. Thesedevices are generally provided with electro-magnets, and are costly in construction andslow in operation, and contain a means forindicating whether the line

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