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Frohnauer Hammer
The Frohnauer Hammer is an historic hammer mill in Frohnau, a village in the municipality of Annaberg-Buchholz in the Ore Mountains of southeast Germany. The mill is an important witness to proto-industrial development in the Ore Mountains. Of the once-numerous hammer mills only three others remain working in Saxony: the Dorfchemnitz Iron Hammer Mill, the Grünthal Copper Hammer Mill and the Freibergsdorf Hammer Mill. In 1907 the Frohnauer Hammer Mill on the Sehma river became the first technical monument in Saxony. The museum complex includes the hammer mill itself, an exhibition of forged artefacts, a hand forge, a mechanical "Christmas hill" (''Weihnachtsberg'') and a bobbin lace room. History The Frohnauer Hammer goes back to the 15th century when it was mentioned as a corn mill with four millstones. On 28 October 1491, Caspar Nietzel discovered a deposit of silver ore on the Schreckenberg mountain, not far from the mill. That same year, mining courts (''Berggeri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ulrich Rülein Von Calw
Ulrich Rülein von Calw (1465–1523) was a physician, doctor, mathematician and well-known mining engineer. He was also active as a surveying, surveyor, Urban planner, town planner and astrologer and was the mayor () of the mining town of Freiberg, Saxony, Freiberg for five years. Life Rülein von Calw was born in 1465 in Calw. From 1485 he studied at the University of Leipzig. In 1490 he became a Bachelor of Arts, bachelor (''baccalaureus'') and Master of Arts (''magister artium'') and then went on to study medicine and mathematics. He was tasked by the Saxon prince-elector, George the Bearded, George to build a "New Town on the Schreckenberg" (''Neustadt am Schreckenberg''), the present-day town of Annaberg-Buchholz, Annaberg. In 1497 Rülein von Calw was appointed by the town of Freiberg, Saxony, Freiberg as City physician, town physician (). Here he acted as a survey and construction engineer, mining expert and astrologer. In 1505 his book ''Eyn wohlgeordnet und nützlich bà ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pig Iron
Pig iron, also known as crude iron, is an intermediate product of the iron industry in the production of steel which is obtained by smelting iron ore in a blast furnace. Pig iron has a high carbon content, typically 3.8–4.7%, along with silica and other constituents of dross, which makes it brittle and not useful directly as a material except for limited applications. The traditional shape of the molds used for pig iron ingots is a branching structure formed in sand, with many individual ingots at right angles to a central channel or "runner", resembling a litter of piglets being nursed by a sow. When the metal had cooled and hardened, the smaller ingots (the "pigs") were simply broken from the runner (the "sow"), hence the name "pig iron". As pig iron is intended for remelting, the uneven size of the ingots and the inclusion of small amounts of sand cause only insignificant problems considering the ease of casting and handling them. History Smelting and producing wroug ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blast Furnace
A blast furnace is a type of metallurgical furnace used for smelting to produce industrial metals, generally pig iron, but also others such as lead or copper. ''Blast'' refers to the combustion air being "forced" or supplied above atmospheric pressure. In a blast furnace, fuel ( coke), ores, and flux (limestone) are continuously supplied through the top of the furnace, while a hot blast of air (sometimes with oxygen enrichment) is blown into the lower section of the furnace through a series of pipes called tuyeres, so that the chemical reactions take place throughout the furnace as the material falls downward. The end products are usually molten metal and slag phases tapped from the bottom, and waste gases (flue gas) exiting from the top of the furnace. The downward flow of the ore along with the flux in contact with an upflow of hot, carbon monoxide-rich combustion gases is a countercurrent exchange and chemical reaction process. In contrast, air furnaces (such as reverbera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wrought Ironwork
Wrought iron is an iron alloy with a very low carbon content (less than 0.08%) in contrast to that of cast iron (2.1% to 4%). It is a semi-fused mass of iron with fibrous slag inclusions (up to 2% by weight), which give it a wood-like "grain" that is visible when it is etched, rusted, or bent to failure. Wrought iron is tough, malleable, ductile, corrosion resistant, and easily forge welded, but is more difficult to weld electrically. Before the development of effective methods of steelmaking and the availability of large quantities of steel, wrought iron was the most common form of malleable iron. It was given the name ''wrought'' because it was hammered, rolled, or otherwise worked while hot enough to expel molten slag. The modern functional equivalent of wrought iron is mild steel, also called low-carbon steel. Neither wrought iron nor mild steel contain enough carbon to be hardenable by heating and quenching. Wrought iron is highly refined, with a small amount of silic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gezähe
In German-speaking countries, the miner's toolset is known as a ''Gezähe'' (derived from ''gizouuun'', zu ''zawen'', ''gezawen'' – to be usable, advantageous at www.uni-heidelberg.de. Accessed on 19 Aug 2012.) formerly also abbreviated to ''Gezäh''. It is a set of personally-owned mining tools and equipment needed by the in his daily work. In coal mining in central Europe during the 19th and 20th centuries, every miner had his own set of tools. So that they could not be stolen, before the end of his shift they were either locked in a tool chest (''Gezähekiste'') or threaded onto a tool ring (''Gezähering'') which was then locked. To that end, all tools had a hole or eyelet. Tools that were not part of a miner's personal equipment ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hammers And Picks
The hammer and pick, rarely referred to as hammer and chisel, is a symbol of mining, often used in heraldry. It can indicate mining, mines (especially on maps or in cartography), or miners, and is also borne as a charge in the coats of arms of mining towns. The symbol represents the traditional tools of the miner, a hammer and a chisel on a handle, similar to a pickaxe, but with one blunt end. They are pictured in the way a right-handed worker would lay them down: the pick with the point to the right and the handle to the lower left, the hammer with the handle to the lower right and the head to the upper left. The handle of the pick protrudes over the head, because the head is not permanently fixed, but can be swapped for a newly sharpened head when it is blunt from use. In coats of arms the symbol is often shown in black (Johanngeorgenstadt, Hövels), but also in natural colours ( Telnice) or in gold or silver ( Abertamy, Bodenwöhr, Gelsenkirchen). __NOTOC__ Examples Fil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John George I Of Saxony
John George I (5 March 1585 – 8 October 1656) was Elector of Saxony from 1611 to 1656. He led Saxony through the Thirty Years' War, which dominated his 45 year reign. Biography Born in Dresden, John George was the second son of the Elector Christian I and Sophie of Brandenburg. He belonged to the Albertine line of the House of Wettin. John George succeeded to the electorate on 23 June 1611 on the death of his elder brother, Christian II. The geographical position of the Electorate of Saxony rather than her high standing among the German Protestants gave her ruler much importance during the Thirty Years' War. At the beginning of his reign, however, the new elector took up a somewhat detached position. His personal allegiance to Lutheranism was sound, but he liked neither the growing strength of Brandenburg nor the increasing prestige of the Palatinate; the adherence of the other branches of the Saxon ruling house to Protestantism seemed to him to suggest that the head of the E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thirty Years' War
The Thirty Years' War was one of the longest and most destructive conflicts in European history The history of Europe is traditionally divided into four time periods: prehistoric Europe (prior to about 800 BC), classical antiquity (800 BC to AD 500), the Middle Ages (AD 500 to AD 1500), and the modern era (since AD 1500). The first early ..., lasting from 1618 to 1648. Fought primarily in Central Europe, an estimated 4.5 to 8 million soldiers and civilians died as a result of battle, famine, and disease, while some areas of what is now modern Germany experienced population declines of over 50%. Related conflicts include the Eighty Years' War, the War of the Mantuan Succession, the Franco-Spanish War (1635–1659), Franco-Spanish War, and the Portuguese Restoration War. Until the 20th century, historians generally viewed it as a continuation of the religious struggle initiated by the 16th-century Reformation within the Holy Roman Empire. The 1555 Peace of Augsburg atte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trip Hammer
A trip hammer, also known as a tilt hammer or helve hammer, is a massive powered hammer. Traditional uses of trip hammers include pounding, decorticating and polishing of grain in agriculture. In mining, trip hammers were used for crushing metal ores into small pieces, although a stamp mill was more usual for this. In finery forges they were used for drawing out blooms made from wrought iron into more workable bar iron. They were also used for fabricating various articles of wrought iron, latten (an early form of brass), steel and other metals. One or more trip hammers were set up in a forge, also known variously as a hammer mill, hammer forge or hammer works. The hammers were usually raised by a cam and then released to fall under the force of gravity. Historically, trip hammers were often powered hydraulically by a water wheel. Trip hammers are known to have been used in Imperial China since the Western Han dynasty. They also existed in the contemporary Greco-Roman world, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flax
Flax, also known as common flax or linseed, is a flowering plant, ''Linum usitatissimum'', in the family Linaceae. It is cultivated as a food and fiber crop in regions of the world with temperate climates. Textiles made from flax are known in Western countries as linen and are traditionally used for bed sheets, underclothes, and table linen. Its oil is known as linseed oil. In addition to referring to the plant, the word "flax" may refer to the unspun fibers of the flax plant. The plant species is known only as a cultivated plant and appears to have been domesticated just once from the wild species ''Linum bienne'', called pale flax. The plants called "flax" in New Zealand are, by contrast, members of the genus ''Phormium''. Description Several other species in the genus ''Linum'' are similar in appearance to ''L. usitatissimum'', cultivated flax, including some that have similar blue flowers, and others with white, yellow, or red flowers. Some of these are perennial pla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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