The agricultural machinery industry emerged in Britain and the United States in the 19th century. Until then the common tools of farming were the plough and the sickle.

These iron agricultural implements were often made by blacksmiths in the local village, who regularly also acted as farrier.

In the first part of the 19th century some of the early agricultural machine manufacturers arose from these blacksmith workshops,[2][3] such as John Deere who started up with the production of ploughs in series in the 1840s.

Agricultural Implements, 1851.
Other companies arose from the introduction of horse drawn reaping, which replaced the type of hand reaper in use since biblical times.

A company as the McCormick started up with building these kind of harvesting machines around the 1840s. And another origin of agricultural industry was the introduction of combined harvesting, threshing and cleaning in the 1830s.

The Case Corporation for example started building those in 1842 as the Racine Threshing Machine Works. Until early 20th century most of those machinery were powered by horses