. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . AM. PHOTO-LITHOGRAPHIC COMX/OSBOftHfS PROCCSS.) 2 Sheets — Sheet 2, T. A. in Printing-Telegraphs. No. 131,337. Patented Sep. 17, <. PKOCtSS.) United States Patent Office. THOMAS A. EDISON, OP NEWARK, NEW IN PRINTING-TELEGRAPHS. Specification forming part of Letters Patent No. 131,337, 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
. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . AM. PHOTO-LITHOGRAPHIC COMX/OSBOftHfS PROCCSS.) 2 Sheets — Sheet 2, T. A. in Printing-Telegraphs. No. 131,337. Patented Sep. 17, <. PKOCtSS.) United States Patent Office. THOMAS A. EDISON, OP NEWARK, NEW IN PRINTING-TELEGRAPHS. Specification forming part of Letters Patent No. 131,337, 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 Improvement. in Printing-Telegraphs; and the following isdeclared to be a correct description thereof. This invention is for shifting the type-wheelslengthwise of the shaft so as to bring one intoaction and move the other out of action. Thishas been accomplished by me at certain pointsin the revolution of the type-wheel by pinsupon the printing-lever acting upon a now dispense with the T-lever and providefor means for shifting the type-wheels at anyletter. The escapement I employ receivesmotion from a magnet, and the type-wheelsare rotated half of the space between one let-ter and the next when the circu
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Keywords: ., boo, bookcentury1800, booksubjectinventions, booksubjecttelephone
