. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . 53 piece, and two or more pairs of wound coresattached to such polar extensions, and provid-ed with magnetically-separate yokes or backpieces, substantially as set forth. 4. In a dynamo or magneto electric machine, 3cthe combination, with a revolving armature, ofthe field-magnet provided with convergentpo-i jllar extensions nearly surrounding the arma-ture, and two or more pairs of magnet-cores,substantially as set forth. 3; 5. In a dynamo or magneto electri c machine,the combination, with a revolving armature, ofth
. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . 53 piece, and two or more pairs of wound coresattached to such polar extensions, and provid-ed with magnetically-separate yokes or backpieces, substantially as set forth. 4. In a dynamo or magneto electric machine, 3cthe combination, with a revolving armature, ofthe field-magnet provided with convergentpo-i jllar extensions nearly surrounding the arma-ture, and two or more pairs of magnet-cores,substantially as set forth. 3; 5. In a dynamo or magneto electri c machine,the combination, with a revolving armature, ofthe field-magnet provided with convergent po-lar extensions made each in one piece magneti-cally and nearly surrounding the armature, 4c,;and with two or more pairs of magnet-cores,having separate magnetic yokes or back pieces:,!substantially as set forth. This specification, signed and witnessed this3d day of June, 1882. THOS. A. EDISOK I Witnesses: Eichd. K Dyer,H. W. Seely. (No Model.) T. A. EDISON. MAGNETO ELECTRIC SIGNALING APPARATUS. No. 282,287. Patented July 31. United States Patent Office. THOMAS A. EDISON, OF MESLO PARK, NEW SIGNALING APPARATUS. SPECIFICATION forming part of Letters Patent No. 282,387, dated July 31, 1883. Application filed August 7, 1882. (No model.) COCM CMCOCM 03Q_ CD O o It is hereby certified that in Letters Patent No. 282,287, granted July 31, 1883, toThomas A. Edison, of Menlo Park, New Jersey, for an improvement in Magneto-Electric Signaling Apparatus, an error appears requiring correction as follows: inline 94, page 2, of the printed specification, the following words should have beeninserted after the word generator, and causing the coils of the generator; and thatthe specification should be read with this correction therein to make it conform withthe records of the case in the Patent Office. Signed, countersigned, and sealed this 14th day of August, A. D. 1883.[SEAL-J M. L. JOSLYN, Acting Secretary of the Interi
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