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A grinder-mixer is a type of agricultural machine used to process livestock feed from grain. It is a portable mill that combines the mixing and grinding operations. Grinding of ingredients generally improves feed digestibility , acceptability, mixing properties and pelletability .
Iowa farmer Arthur Luscombe (1922–2008) [6] founded Art's Way Manufacturing in 1956 to produce and sell a power take-off powered grinder-mixer he had developed on his farm near Dolliver. By 1959, the business was manufacturing OEM grinder-mixers for Massey Ferguson, Owatonna / Gehl and International Harvester. [2]
The milled grain (flour) is collected as it emerges through the grooves in the runner stone from the outer rim of the stones and is fed down a chute to be collected in sacks on the ground or "meal floor". A similar process is used for grains such as wheat, to make flour, and for maize, to make corn meal.
Grain is fed by gravity from the hopper into the feed-shoe. The shoe is agitated by a shoe handle running against an agitator (damsel) on the stone spindle, the shaft powering the runner stone. This mechanism regulates the feed of grain to the millstones by making the feed dependent on the speed of the runner stone.
Bench grinders are manually operated. Cylindrical grinder, which includes both the types that use centers and the centerless types. A cylindrical grinder may have multiple grinding wheels. The work piece is rotated and fed past the wheel(s) to form a cylinder. It is used to make precision rods, tubes, bearing races, bushings, and many other parts.
John Stevens (December 4, 1840 – August 5, 1920) was a miller and inventor who lived in Neenah, Wisconsin.His inventions in flour milling revolutionized the process, leading to large-scale shifts in wheat-growing regions, and to the predominance of particular milling companies and mill-equipment manufacturers.
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Quern stones were used in China at least 10,000 years ago to grind wheat into flour. The production of flour by rubbing wheat by hand took several hours. [8] Due to their form, dimensions, and the nature of the treatment of the surfaces, they reproduce precisely the most ancient implements used for grinding cereal grain into flour.