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Encyclopedia > Gristmill
Gristmill with water wheel, Skyline Drive, VA, 1938
Gristmill with water wheel, Skyline Drive, VA, 1938

A gristmill is a building where grain is ground into flour. In many countries these are simply referred to as flour mills. Image File history File links Photo located by using keyword gristmill in search of Library of Congress catalogs at [1] Archival information given as follows: TITLE: Detail of gristmill on way to Skyline Drive, Virginia CALL NUMBER: LC-USF33- 011410-M5 [P&P] REPRODUCTION NUMBER: LC-USF33-011410-M5 (b... Image File history File links Photo located by using keyword gristmill in search of Library of Congress catalogs at [1] Archival information given as follows: TITLE: Detail of gristmill on way to Skyline Drive, Virginia CALL NUMBER: LC-USF33- 011410-M5 [P&P] REPRODUCTION NUMBER: LC-USF33-011410-M5 (b...

Contents

Middle Ages

Limited examples of gristmills can be found in Europe from the High Middle Ages. An extant well preserved waterwheel and gristmill on the Ebro River in Spain is associated with the Real Monasterio de Nuestra Senora de Rueda, built by the Cistercian monks in the year 1202. The Cistercians were known for their use of this technology in Western Europe in the period 1100 to 1350 AD. World map showing Europe A satellite composite image of Europe Europe is one of the seven traditional continents of the Earth. ... The cathedral Notre Dame de Paris, a significant architectural contribution of the High Middle Ages. ... An overshot water wheel standing 42 feet high powers the Old Mill at Berry College in Rome, Georgia A water wheel (also waterwheel, Norse mill, Persian wheel or noria) is a hydropower system; a system for extracting power from a flow of water. ... This article is about the Spanish river. ... Real Monasterio de Nuestra Senora de Rueda, outer courtyard Real Monasterio de Nuestra Senora de Rueda is an early Cistercian Monastery in the Aragon region of Spain. ... The Order of Cistercians (OCist) (Latin Cistercenses), otherwise Gimey or White Monks (from the colour of the habit, over which is worn a black scapular or apron) are a Catholic order of monks. ... A monk is a person who practices religious asceticism, the conditioning of mind and body in favor of the spirit. ... // Events August 1 - Arthur of Brittany captured in Mirebeau, north of Poitiers Beginning of the Fourth Crusade. ...


Modern mills

Historically gristmills contained rotating stones powered by water or by wind; later mills used steam engines for power, and modern mills typically use electricity or fossil fuels to spin heavy steel rollers. These techniques produce visibly different results, but can be made to produce nutritionally and functionally equivalent output. Mill stones are used in windmills and watermills for grinding wheat or other grains. ... Watermill of Braine-le-Château, Belgium (12th century) A watermill is a structure that uses a water wheel or turbine to drive a mechanical process such as flour or lumber production, or metal shaping (rolling, grinding or wire drawing). ... Spanish windmills at La Mancha A windmill is an engine powered by the wind to produce energy, often contained in a large building as in traditional post mills, smock mills and tower mills. ... // The term steam engine may also refer to an entire railroad steam locomotive. ... Rotating magnetic field as a sum of magnetic vectors from 3 phase coils An electric motor converts electrical energy into kinetic energy. ... A colorized automobile engine The internal combustion engine is a heat engine in which the burning of a fuel occurs in a confined space called a combustion chamber. ... For other uses, see Steel (disambiguation). ...


Gristmills only grind clean grains - that is, grain from which stalks and chaff have previously been removed - but some mills also housed equipment for threshing, sorting, and cleaning prior to grinding. Gristmills also ground corn into meal. Chaff is the seed casings and other inedible plant matter harvested with cereal grains such as wheat. ... Threshing is the process of beating cereal plants in order to separate the seeds or grains from the straw. ...


Modern mills are almost certainly "merchant mills"; that is, they are privately owned and accept money or trade for milling grains, or the corporations that own the mills buy unmilled grain and then own the flour produced. Early mills were almost always built and supported by farming communities and typically a percentage of each farmer's grain called a "miller's toll" was set aside for the miller in lieu of wages. Although gristmill can refer to any mill that grinds grain, the term historically was used to refer to a local mill where farmers brought their own grain and received the flour from it, minus the "miller's toll." [1] Modern mills use serrated and flat cast iron rollers to separate the bran and germ from the endosperm. The endosperm is ground to create white flour which may be recombined with the bran and germ to create whole wheat or graham flour. Cast iron usually refers to grey cast iron, but can mean any of a group of iron-based alloys containing more than 2% carbon (alloys with less carbon are carbon steel by definition). ... Whole grains are cereal grains which retain the bran and germ as well as the endosperm, in contrast to refined grains which retain only the endosperm. ... Whole grains are cereal grains which retain the bran and germ as well as the endosperm, in contrast to refined grains which retain only the endosperm. ... Graham flour is a type of whole wheat flour named after the American Presbyterian minister Rev. ...


The classical British and American mills

Classical mill designs are usually water powered, though some are wind mills, or powered by livestock. A sluice gate is used to open a channel and so start the water flowing and a water wheel turning. In most such mills the water wheel was mounted vertically (i.e. edge-on) in the water, but in some cases horizontally (the tub wheel and so-called Norse wheel). Later designs incorporated horizontal steel or cast iron turbines and these were also sometimes refitted into the old wheel mills. A watermill is a machine constructed by connecting a water wheel to a pair of millstones. ... Spanish windmills at La Mancha A windmill is an engine powered by the wind to produce energy, often contained in a large building as in traditional post mills, smock mills and tower mills. ... Sheep are commonly bred as livestock. ... Sluice gates at Teddington, on the River Thames Combination of sluice gates and canal lock under bridge Grave A small wooden sluice in Magome, Japan, used to power a waterwheel. ... An overshot water wheel standing 42 feet high powers the Old Mill at Berry College in Rome, Georgia A water wheel (also waterwheel, Norse mill, Persian wheel or noria) is a hydropower system; a system for extracting power from a flow of water. ... For other uses, see Steel (disambiguation). ... Cast iron usually refers to grey cast iron, but can mean any of a group of iron-based alloys containing more than 2% carbon (alloys with less carbon are carbon steel by definition). ... WWII era ship propulsion turbine A turbine is a rotary engine that extracts energy from a fluid flow. ...

Glade Creek Grist Mill in Babcock State Park, West Virginia, USA, 2006
Glade Creek Grist Mill in Babcock State Park, West Virginia, USA, 2006

In most wheel-driven mills, a large gear-wheel called the pit wheel is mounted on the same axle as the water wheel and this drives a smaller gear-wheel (the wallower) on a main driveshaft running vertically from the bottom to the top of the building. This system of gearing ensures that the main shaft turns faster than the water wheel, which typically rotates at 10 revolutions per minute, or so. Image File history File linksMetadata Download high-resolution version (3784x2048, 2580 KB) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Gristmill List of West Virginia state parks Babcock State Park Metadata This file contains additional information, probably added... Image File history File linksMetadata Download high-resolution version (3784x2048, 2580 KB) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Gristmill List of West Virginia state parks Babcock State Park Metadata This file contains additional information, probably added... Spur gears found on a piece of farm equipment. ... Cardan driveshaft with universal joints A driveshaft or driving shaft or Cardan shaft is a mechanical device for transferring power from the engine or motor to the point where useful work is applied. ... Revolutions per minute (abbreviated rpm, RPM, r/min, or min-1) is a unit of frequency, commonly used to measure rotational speed, in particular in the case of rotation around a fixed axis. ...


The millstones themselves turn at around 120 rpm. They are laid one on top of the other. The bottom stone, called the bed, is fixed to the floor, while the top stone, the runner, is mounted on a separate spindle, driven by the main shaft. A wheel called the stone nut connects the runner's spindle to the main shaft, and this can be moved out of the way to disconnect the stone and stop it turning, leaving the main shaft going to drive other machinery. This might include driving a mechanical sieve to refine the flour, or turning a wooden drum to wind up a chain used to hoist sacks of grain to the top of the mill house. Sieve may mean: // Cooking a colander a chinoise, or conical sieve Mathematics sieve theory, technique for counting or filtering sets of numbers sieve of Eratosthenes general number field sieve large sieve sieve (category theory), a way of writing down how objects in a category glue to give other ones Computer...


The grain is lifted in sacks onto the sack floor at the top of the mill. The sacks are emptied into bins, where the grain falls down through a hopper to the stones on the stone floor below. The flow of grain is regulated by shaking it along a gently sloping trough (the slipper) from which it falls into a hole in the centre of the runner stone. The milled grain (flour) is collected as it emerges through the grooves in the runner stone from the outer rim of the stones and it gets fed down a chute to be collected in sacks on the ground or meal floor. A very similar process is used for grains such as wheat, kamut, etc to make flour as well as for maize to make corn meal. A paper bag is a container that is usually used for storing or holding something. ... Species T. aestivum T. boeoticum T. compactum T. dicoccoides T. dicoccon T. durum T. monococcum T. spelta T. sphaerococcum References:   ITIS 42236 2002-09-22 For the indie rock group see: Wheat (band). ... Originally classified as Triticum turgidum var. ... Binomial name Zea mays L. Maize (Zea mays ssp. ... Cornmeal is dried, ground maize corn. ...


In order to prevent the vibrations of the mill machinery from shaking the building apart, a gristmill will often have at least two separate foundations.


This labor-intensive process was revolutionized by American inventor Oliver Evans, who at the end of the eighteenth century patented and promoted a fully automated mill design. Oliver Evans Oliver Evans (13 September 1755 – 15 April 1819) was a United States inventor. ...


The Boykin Mill, in Boykin, South Carolina, has an operating grist mill where meal and grits have been ground by water power the same way for over 150 years. GRITS is a Christian hip hop group from Nashville, Tennessee. ... Hydropower (or waterpower) harnesses the energy of moving or falling water. ...

References

  1. ^ ARTFL Project: Webster Dictionary, 1913. The University of Chicago - Department of Romance Languages and Literature. Retrieved on 2006-09-28.

2006 (MMVI) was a common year starting on Sunday of the Gregorian calendar. ... September 28 is the 271st day of the year (272nd in leap years) in the Gregorian calendar. ...

See also

A watermill is a machine constructed by connecting a water wheel to a pair of millstones. ... Pitstone Windmill, believed to be the oldest windmill in the British Isles A windmill is an engine powered by the energy of wind. ... An overshot water wheel standing 42 feet high powers the Old Mill at Berry College in Rome, Georgia A water wheel (also waterwheel, Norse mill, Persian wheel or noria) is a hydropower system; a system for extracting power from a flow of water. ... The cotton mill is a type of factory that was created to house spinning and weaving machinery. ...

External links

  • Prewetts Mill A British mill built in 1861 driven by steam until the 1970s]

  Results from FactBites:
 
The Inn at Gristmill Square (277 words)
Located in the heart of the picturesque village of Warm Springs, The Inn at Gristmill Square offers a unique and peaceful escape from the rush and noise of everyday life.
Gristmill Square is like a small 19th century mountain village, with lovingly-restored historic buildings, fresh-baked muffins every morning, and an elegant restaurant housed in the converted mill.
The present mill building was erected in 1900 and operated as a gristmill until 1971, when the building was converted into the Waterwheel Restaurant.
Antiques and the Arts Online - George Washington's Gristmill Grinds After 200 Years (809 words)
Although the original gristmill structure no longer exists, in 1993 the Commonwealth of Virginia reconstructed Washington's mill on the original site, based on a combination of documentary and archaeological evidence and opened its doors to the public.
After further cleaning, the sacks of grain are delivered to the gristmill to be ground into flour and packed in barrels.
The total cost of the gristmill project including restoring the millworks, installing a water circulating system to power the mill wheel, fabricating and installing the Evans system and adding parking and other conveniences to support the anticipated increase in visitation will be approximately $1.2 million.
  More results at FactBites »

 

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