Probably with the mechanizing of farm equipment which was very early 1900's. By about 1930 almost all farming used engine driven farm equipment.
An old abandoned farm site I detect has a harvester still sitting where the barn once was.
It has that type of chain to drive the various parts. From researching the history of this farm my guess is the harvester is from 1910-1930.
I have found a spark plug and coins from that period so finds and research match.