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Screenless Hammer Mill
The screenless hammer mill, like regular hammer mills, is used to pound grain. However, rather than a screen, it uses air flow to separate small particles from larger ones. Conventional hammer mills in poor and remote areas, such as many parts of Africa, suffer from the problem that screens break easily, and cannot be easily bought, made or repaired. Thus regular hammer mills break down and fall into disuse. The screenless hammer mill uses air flow to separate small particles from larger ones, rather than a screen, and is thus more reliable. The screenless hammer mill is claimed to be 25% cheaper - saved by archive.org and much more energy efficient than regular hammer mills, as well as more reliable. It was designed by [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hammer Mill
A hammer mill, hammer forge or hammer works was a workshop in the pre-industrial era that was typically used to manufacture semi-finished, wrought iron products or, sometimes, finished agricultural or mining tools, or military weapons. The feature that gave its name to these workshops was the water-driven trip hammer, or set of hammers, used in the process. The shaft, or 'helve', of the hammer was pivoted in the middle and the hammer head was lifted by the action of cams set on a rotating camshaft that periodically depressed the end of the shaft. As it rose and fell, the head of the hammer described an arc. The face of the hammer was made of iron for durability. Hammer mills These mills, which were original driven by water wheels, but later also by steam power, became increasingly common as tools became heavier over time and therefore more difficult to manufacture by hand. The hammer mills smelted iron ore using charcoal in so-called bloomeries (Georgius Agricola 1556, ''Re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amy B
Amy is a female given name, sometimes short for Amanda, Amelia, Amélie, or Amita. In French, the name is spelled ''"Aimée"''. People A–E * Amy Acker (born 1976), American actress * Amy Vera Ackman, also known as Mother Giovanni (1886–1966), Australian hospital administrator * Amy Adams (born 1974), American actress * Amy Alcott (born 1956) – American Hall of Fame golfer * Amy Archer-Gilligan, (1873–1962), American serial killer * Amy Beach (1867–1944), American composer and pianist * Amy Birnbaum (born 1975), American voice actress * Amy Bishop (born 1965), American professor and mass shooter * Amy Braverman, American statistician * Amy Brenneman (born 1964), American actress * Amy Bruckner (born 1991), American actress and singer * Amy Callaghan (born 1992), British politician * Amy Carmichael (1867–1951), British missionary to India * Amy Castle (born 1990), American actress and internet personality * Amy Cimorelli (born 1995), American singer * Amy Carter ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Appropriate Technology
Appropriate technology is a movement (and its manifestations) encompassing technological choice and application that is small-scale, affordable by locals, decentralized, labor-intensive, energy-efficient, environmentally sustainable, and locally autonomous. It was originally articulated as intermediate technology by the economist Ernst Friedrich "Fritz" Schumacher in his work ''Small Is Beautiful.'' Both Schumacher and many modern-day proponents of appropriate technology also emphasize the technology as people-centered. Appropriate technology has been used to address issues in a wide range of fields. Well-known examples of appropriate technology applications include: bike- and hand-powered water pumps (and other self-powered equipment), the universal nut sheller, self-contained solar lamps and streetlights, and passive solar building designs. Today appropriate technology is often developed using open source principles, which have led to ''open-source appropriate technology'' ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Inventions ...
The following articles cover the timeline of United States inventions: *Timeline of United States inventions (before 1890), before the turn of the century * Timeline of United States inventions (1890–1945), before World War II *Timeline of United States inventions (1946–1991), for the post-war era *Timeline of United States inventions (after 1991), after the Fall of the Soviet Union {{DEFAULTSORT:Timeline of United States Inventions United States inventions United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
