...ted a reaper, with saw-toothed cutters and guards, which was immediately put into practical operation, and proved thoroughly satisfactory. In 1834, Cyrus H. McCormick, then of Virginia, and late of Chicago , took out the first patent on his reaper, which has since come into such general use. This reaper, with improvements patented in 1845 and 1847, received the first prize at the World's Fair of 1851, w...