{{more sources, date=May 2016

A corn sheller is a hand-held device or a piece of machinery to shell corn kernels off the cob for feeding to

livestock Livestock are the domesticated animals raised in an agricultural setting to provide labor and produce diversified products for consumption such as meat, eggs, milk, fur, leather, and wool. The term is sometimes used to refer solely to animal ...

or for other uses.

History

The modern corn sheller is commonly attributed to Lester E. Denison from Middlesex County, Connecticut. Denison was issued a patent on August 12, 1839, for a freestanding, hand-operated machine that removed individual kernels of corn by pulling the cob through a series of metal-toothed cylinders which stripped the kernels off the cob. Soon after, other patents were granted for similar machines, sometimes having improvements over Denison's original design.

Operation

The operation of a corn sheller is similar to a

threshing machine A threshing machine or a thresher is a piece of farm equipment that threshes grain, that is, it removes the seeds from the stalks and husks. It does so by beating the plant to make the seeds fall out. Before such machines were developed, thre ...

, but with some differences to deal with larger grain size and other differences of corn compared to

wheat Wheat is a grass widely cultivated for its seed, a cereal grain that is a worldwide staple food. The many species of wheat together make up the genus ''Triticum'' ; the most widely grown is common wheat (''T. aestivum''). The archaeologi ...

and other crops. Corn shellers can be powered by a hand crank, a tractor, a stationary engine, or by an electric motor. Whole corn cobs are fed in. They are pulled between two toothed wheels, usually made of metal. Each wheel spins the opposite direction of the other. The teeth pull the kernels off the cob until there are no kernels left. The kernels fall out through a screen into a container (such as a bucket) placed underneath the machine. The cob is then ejected out, since it cannot pass through the screen. Some models have a "walker", similar to a threshing machine or combine, to take the cobs out.

Resources

ISOKO Institute: Promoting Private Enterprise in Africa
Agricultural machinery