. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . tween the roughened end ofu and the roller v; then the link 62 swings allthe parts together. On the return movementthe slot in 62 allows the pawl u to be liftedoff the paper before the arm v is swung backby the link claim as my invention— 1. The tooth o7 and stop 50 upon the shaftg, in combination with the arm o4, teeth 54,and finger 53, moved by the printing-lever m1,the parts being arranged and operated sub-stantially as set forth. 2. The pawl n upon the arm v, and con* 138,860 nected by the link 68 with the


. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . tween the roughened end ofu and the roller v; then the link 62 swings allthe parts together. On the return movementthe slot in 62 allows the pawl u to be liftedoff the paper before the arm v is swung backby the link claim as my invention— 1. The tooth o7 and stop 50 upon the shaftg, in combination with the arm o4, teeth 54,and finger 53, moved by the printing-lever m1,the parts being arranged and operated sub-stantially as set forth. 2. The pawl n upon the arm v, and con* 138,860 nected by the link 68 with the lever m, incombination with the slotted link 62, thatswings the lever v to feed the paper, substan-tially as specified. 3. The cam 36 moved by the T-lever o1 andpins 30 31 upon the printing-lever, in com-bination with the type-wheel I and sleeve o,substantially as and for the purposes set forth. Signed by me this 16th day of October,A. 1). 1872. T. A. EDISON. Witnesses: Geo. T. Pinckney,Ohas. H. Smith. T. A. EDISON. Printing Telegraphs. No. 138,870. Patented May 13, United States Patent Office. THOMAS A. EDISON, OF NEWARK, NEW JEBSEY, ASSIGNOR TO THE GOLDAND STOCK TELEGRAPH CO., OE NEW YORK, N. Y. IMPROVEMENT IN PRINTING-TELEGRAPHS. Specification forming part of Letters Patent No. 138,870, dated May 13, 1873; application filed March 13, 1873. 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 Imrjrovementin Printing-Telegraph Instruments, of whichthe following is a specification: This instrument is a combined transmitterand receiver, and the pulsator (which opensand closes the circuit to the type-wheel mag-nets) and the type-wheel are upon the sameshaft, and this shaft is revolved continuouslyby an electro-motor or other device. The pulsator and type-wheel are both re-volved by frictional contact with their shaft;but the type-wheel only moves with said shaftas the pallets of the ty


Size: 2403px × 1040px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., boo, bookcentury1800, booksubjectinventions, booksubjecttelephone