While first pulled by teams of horse, oxen, or mule, later, steam power was used. George Stockton Berry integrated a combine with a steam engine and used straw in the boiler. After WWII, tractor-drawn combines became much more common, as more farms started to use tractors. The first tractor-drawn combine harvesters used shakers to separate grain and chaff. Straw-walkers were used to eject the straw while retaining the harvested grain in the machine.
A gasoline engine typically powered early tractor-drawn combine harvesters, but later models incorporated PTO power. In both cases, these combines had either bags or bins that held grain safely until it was transferred to a truck or wagon for later transport.
The first self-powered harvester was built in 1911 by the Holt Manufacturing Company of California. In Australia, 1923, the Sunshine Auto Header became one of the first self-propelled, center-feeding harvesters that used a Fordson engine. Meanwhile, in Kansas, the Gleaner Manufacturing Company also patented a self-powered harvester that used a Fordson engine.
In the late 1930s, Thomas Carroll, while working for Massey-Harris, perfected a self-propelled harvester, as well as a lightweight model that gained prominence in 1940. Other inventions that helped develop the combine harvester that we know and love today include the auger invented by Lyle Yost, which made lifting grain out of a harvester a much easier task.
In Europe, the first self-propelled combine harvester was launched in 1952. By 1953, CLAAS had developed a self-powered combine harvester called Hercules, which could harvest 5 tons per day. There are many combine harvesters today that still emulate the design of the original Hercules, and they are still available with either gasoline or diesel engines.
The 1960s saw the invention of the self-cleaning rotary screen, which helped to prevent the common overheating issues with prior combine harvesting machinery. Combine harvesters would overheat as the chaff would often get clogged in the machine’s radiator, blocking the airflow needed to keep the engine cool.