The modern combine harvester, or simply combine, is a machine designed to harvest a variety of grain crops. The name derives from its combining four separate harvesting operations—reaping, threshing, gathering, and winnowing—to a single process.
Machines can allow for better practices such as reduced tillage and inter-cropping, the practice of planting different types of crops (e.g. legumes / cereals) in one field that grow simultaneously and complement each other in their growth.
The machine combines the peeling and threshing into one process, it would achieve the peeling and threshing process in one operation directly