This is probably the oldest surviving American harvester. Enoch Ambler, a native of Montgomery County, New York, patented this machine in 1834 and demonstrated it by cutting about 100 acres of grass in 1835. Interest in the mower led Beale & Griswold of Spencertown, New York, to buy Ambler's patent and attempt commercial production for the 1836 and 1837 seasons.