Threshing is the process used to separate the chaff, the protective covering around the grain, and the kernel of grain used for food, from a plant’s stalk. Farmers used flails to remove the chaff and grain from the stalk and to crack open the chaff.

Threshing is the process used to separate the chaff, the protective covering around the grain, and the kernel of grain used for food, from a plant’s stalk. Farmers used flails to remove the chaff and grain from the stalk and to crack open the chaff.
This image from Benjamin Butterworth’s The Growth of Industrial Art, depicts reaping grain during the colonial period. Reaping had to be done by hand, using a scythe or hay knife to cut the grain. Notice that the whole family helps with the field work.
By the mid-nineteenth century, farmers no longer had to reap entirely by hand. Machines made the work of harvesting go more quickly. This Self Raker Harvester was patented in 1855, to help farmers bring in their harvest.
Threshing, also spelled thrashing, is the process used to separate the chaff, the protective covering around the grain, and the kernel of grain we use for food, from a plant’s stalk. During the nineteenth century, farmers used a variety of methods to remove the chaff and grain from the stalk and to crack open the chaff. Some used flails, others used hand-powered machines such as this, and still others used animal-powered machines. Today, farmers thresh primarily with gasoline-powered machines.
Patented in 1865, the adjustable switch reel rake was intended to make reaping grain more efficient for farmers. Although some farmers used steampowered machines by the 1860’s, many still used horses or oxen to power the equipment on their farms.