New York, Dec 23/92
Thos A. Edison Esq
Orange N.J.
Dear Sir
We enclose herewith an assignment from Mr. Dickson and another from yourself from yourself to the ore milling co which have executed as indicated in pencil and return to us. There assignments were prepared upon the request of Mr. Perry.
Yours truly
Dyer + Seely WHERAS, I, WLLIAM K.L. DICKSON, or Orange, in the County of Essex and State of New Jersey, did obtain jointly with THOMAS A. EDISON, of Llewellyn Park, in the County of Essex and State of New Jersey, Letters Patent of the United States numbered 434,588 and dated the 19th day of August, 1890, and granted upon an Improvement in Magnetic Ore Separators; and
WHEREAS, we are now equal owners of the entire right, title and interest in and to said Letters Patent and the invention covered thereby; and
WHERAS, the said THOMAS A. EDISON is desirous of acquiring my entire right, title and interest in and to the said Letters Patent and the invention covered thereby.
NOW THEREFRE, be it known that, for in consideration of the sum of One Dollar, to me in hand paid by the said Thomas A. Edison, the receipt of which is hereby acknowledged, I, the said William K.L. Dickson, have sold, assigned and transferred, and by these presents do sell, assign and transfer unto the said Thomas A. Edison, his heirs and assigns, my entire right, title and interest in and to the said Letters Patent were granted, the said Letters Patent to be held and enjoyed by the said Thomas A. Edison, his heirs and assigns, for the full end of the term for which said Letter Patent are or may be granted, as fully and entirely as the same would have held and enjoyed by said Edison and myself had this assignment and sale not been made.
IN WITNESS WHEREOF, I have hereunto set my hand and seal this day of December, 1892
In the presence of- William R.D. Decker WHEREAS, I, THOMAS A. EDISON, of Llewellyn Park, in the County of Essex and State of New Jersey, did obtain letters Letters Patent of the United States, upon certain inventions, which are numbered and dated as follows, to wit:-
No. 430,275, dated June 17th 1890, Improvement in Magnetic Separators;
" 430,280 " June 17th 1890
" 465,250, " December 15th 1891, Improvement in the Process of Extracting Copper Pyrites;
" 465, 251 " December 15th 1891, Improvement in the Method of Bricking Fine Ores;
" 470,929 " March 15th 1892, Improvement in Magnetic Seperators;
" 471,268, " March 22nd 1892, Improvement in Ore-Conveyors and Method or Arranging Ore Thereon
" 472,286, " April 5th 1892, Improvement in Dust Proof Journal Bearings for Shafts
" 472,752, " April 12th 1892, Improvement in Dust Proof Bearings;
" 472,753, " April 12, 1892, Improvement in Ore Screening Apparatus;
" 474,591, " May 10th 1892, Improvement in the Process of Extracting Gold from Sulphide Ores;
" 474,592, " May 16th 1892, Improvement in Ore Conveying Apparatus;
" 474,593, " May 10th 1892, Improvement in Dust Proof Swivel Shaft Bearings;
No. 475,532 dated June 7th 1892, Improvement Ore Screening Apparatus;
" 476,991, " June 14th 1892, Improvement in the Method of and Apparatus for Separating Ores;
" 485,840 " November 8th 1892, Improvement in the Method of Bricking Fine Iron Ores;
" 485,841, " November 8th 1892, Improvement in the Method of Magnetically Separating Ores;
" 485,842, " November 8th 1892, Improvement in the Method of Magnetic Ore Separation
AND WHEREAS, I am now the sole and exclusive owner of the entire right, title and interest in and to each of the aforesaid Letters Patent and the inventions covered thereby; and
WHEREAS, I am also the owner by assignment of the entire, title and interest in and to Letters Patent of the United States No. 434,588 issued August 19th 1890, jointly to myself and William K.L. Dickson, upon an Improvement in Magnetic Ore Separators; and
WHERAS, EDISON ORE MILLING COMPANY, LIMITED, a corporation organized and existing under the Laws of the State of New York, and having its principal place of business at New York City in said State, is desirous of acquiring the entire right, title and interest in and to each of the foregoing Letters Patent of the United States and the inventions covered thereby.
NOW THEREFORE, be it known, that for and in consideration of the sum of One Dollar to me in hand paid by said Edison Ore Milling Company, Limited, the receipt of which is hereby acknowledged, I, the said Thomas A. Edison, have sold, assigned and transferred, and by these presents do sell, assign and transfer unto the said Edison Ore Milling Company, Limited, its successors and assigns, to the full end of the term for which each of the aforesaid Letters Patent are or may be granted, as fully and entirely as the same would have been held and enjoyed by me had this assignment and sale not been made.
IN WITNESS WHEREOF, I have hereunto set my hand and seal this day of December, 1892.
In the presence of- Thomas A. Edison

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