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Stay Cable
Steel wire rope (right hand lang lay) Wire rope is several strands of metal wire twisted into a helix forming a composite ''rope'', in a pattern known as ''laid rope''. Larger diameter wire rope consists of multiple strands of such laid rope in a pattern known as ''cable laid''. In stricter senses, the term ''wire rope'' refers to a diameter larger than , with smaller gauges designated cable or cords. Initially wrought iron wires were used, but today steel is the main material used for wire ropes. Historically, wire rope evolved from wrought iron chains, which had a record of mechanical failure. While flaws in chain links or solid steel bars can lead to catastrophic failure, flaws in the wires making up a steel cable are less critical as the other wires easily take up the load. While friction between the individual wires and strands causes wear over the life of the rope, it also helps to compensate for minor failures in the short run. Wire ropes were developed starting with min ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steel Wire Rope
Steel is an alloy made up of iron with added carbon to improve its strength and fracture resistance compared to other forms of iron. Many other elements may be present or added. Stainless steels that are corrosion- and oxidation-resistant typically need an additional 11% chromium. Because of its high tensile strength and low cost, steel is used in buildings, infrastructure, tools, ships, trains, cars, machines, electrical appliances, weapons, and rockets. Iron is the base metal of steel. Depending on the temperature, it can take two crystalline forms (allotropic forms): body-centred cubic and face-centred cubic. The interaction of the allotropes of iron with the alloying elements, primarily carbon, gives steel and cast iron their range of unique properties. In pure iron, the crystal structure has relatively little resistance to the iron atoms slipping past one another, and so pure iron is quite ductile, or soft and easily formed. In steel, small amounts of carbon, ot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wilhelm Albert (engineer)
Wilhelm August Julius Albert (24 January 1787 – 4 July 1846) was a German engineer and mining administrator, best remembered as the first person to record observations of metal fatigue. Albert was born in Hanover and showed early talent as a musician before embarking on the study of law in Göttingen in 1803. Experience in the Harz mountains awakened an interest in mining and, in 1806, he was appointed to the Mining and Forestry Office in Clausthal. By 1836 he was directing the entire mining industry of the Harz region. In 1829, he observed, studied and reported the failure of iron mine hoist chains arising from repeated small loadings, the first recorded account of metal fatigue. He built a machine which repeatedly loaded a chain. His finding was that fatigue was not associated with an accidental overload, but was dependent on load and the number of repetitions of load cycles. He invented a twisted steel cable, later known as an "Albert Rope", which was first used in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lehigh Coal & Navigation Company
The Lehigh Coal & Navigation Company was a mining and transportation company headquartered in Mauch Chunk, Pennsylvania, now known as Jim Thorpe, Pennsylvania. The company operated from 1818 until its dissolution in 1964 and played an early and influential role in the rise of the American Industrial Revolution and early U.S. industrialization. The company ultimately encompassed source industries, transport, and manufacturing, making it the first vertically integrated U.S. company.Archer B. HulbertThe Paths of Inland Commerce, A Chronicle of Trail, Road, and Waterway, Vol. 21, The Chronicles of America Series. Editor: Allen Johnson (1921) Building on two predecessor companies incorporated in 1818,, 627 pages (pdf) founders Erskine Hazard and Josiah White entered the coal industry to serve customers seeking a steady supply of fuel for foundries and mills on the falls of the Schuylkill River. Its role in accelerating regional industrial development by taking on civil engineerin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Erskine Hazard
Erskine Hazard (1790-1865), a younger son of the first U.S. Postmaster Ebenezer Hazard, became the partner of Josiah White about 1810 when around 19 years old. White and Hazard together established spearheaded efforts that enabled the Industrial Revolution, the advancement of steam power, and of railroading, creating the infrastructure and business climate to accelerate the Northeast U.S. out of an agrarian society to the industrial power that served as a foundation for the rise of the United States as the world's foremost economic power. The Partnership Together they put together the wherewithal to open a foundry and wire drawing plant on the falls of the Schuylkill River near Philadelphia in 1810. Their first reputation establishing event was to build a small suspension bridge across the Schuylkill in order to better demonstrate their factory. When the US President put an embargo in place on Bituminous Coal imports from Great Britain in the tension prior to the War of 1812, the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Josiah White
Josiah White (1781–1850) was a Pennsylvania industrialist and key figure in the American Industrial Revolution. Career White began early factory-centered mill production in 1808 in water powered ironworks near Philadelphia, along with his partner, Erskine Hazard, when they quickly found that their first mill at the East Falls, Pennsylvanial to be much too small. Subsequently, they built a more elaborate and larger mill nearby to refine pig iron and produce cast iron artifacts and roll wrought bar iron goods, including nails and wire. The pair were especially influential after 1814 in helping make the American Industrial Revolution accelerate its building momentum by agitating for infrastructure investment, sponsoring two key river navigations and the nation's first long railway, and then after initial success, increasingly supplying an expanding part of the country's overall energy needs including that of other industrialists at a time when there occurred the prolonged first ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John A
Sir John Alexander Macdonald (January 10 or 11, 1815 – June 6, 1891) was the first prime minister of Canada, serving from 1867 to 1873 and from 1878 to 1891. The dominant figure of Canadian Confederation, he had a political career that spanned almost half a century. Macdonald was born in Scotland; when he was a boy his family immigrated to Kingston in the Province of Upper Canada (today in eastern Ontario). As a lawyer, he was involved in several high-profile cases and quickly became prominent in Kingston, which elected him in 1844 to the legislature of the Province of Canada. By 1857, he had become premier under the colony's unstable political system. In 1864, when no party proved capable of governing for long, Macdonald agreed to a proposal from his political rival, George Brown, that the parties unite in a Great Coalition to seek federation and political reform. Macdonald was the leading figure in the subsequent discussions and conferences, which resulted in th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sholto Percy
Joseph Clinton Robertson (c.1787–1852), pseudonym Sholto Percy, was a Scottish patent agent, writer and periodical editor. He was a political radical prominent in the early days of the working-class press in London, and in the debates within the Mechanics Institute movement. Early life He was born about 1787, the son of Rev. Joseph Robertson and Isobel Mathieson of Stewarton, Scotland. Rev. Joseph Robertson was Minister of Leith Wynd Chapel, Edinburgh, Scotland, but banished from Scotland for performing illegal marriages. ''The Mechanics' Magazine'' Robertson founded ''The Mechanics' Magazine'' in 1823, and edited and largely wrote it until the year of his death. It was a low-priced scientific weekly, and the first publication of its kind. To begin with he was in close alliance with Thomas Hodgskin: they had met in Edinburgh. It took advantage of a stamp tax exemption for technical weeklies not dealing in news. Robertson also devised a way of generating cheap content by an ea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert Stirling Newall
Robert Stirling Newall FRS FRAS (27 May 1812 – 21 April 1889) was a Scottish engineer and astronomer. Life and work Born at Dundee on 27 May 1812, Newall began work in a local mercantile office before leaving for London, where, in the employment of Robert McCalmont, he worked on a series of experiments on the rapid generation of steam. He later spent two years promoting McCalmont's business interests in America. Wikisource:Newall, Robert Stirling (DNB00) In 1838, whilst L.D.B. Gordon was studying at the Freiberg School of Mines, Germany, he visited the mines at Clausthal, and met Wilhelm Albert. Impressed by what he saw, he wrote to Robert urging him to "Invent a machine for making wire ropes". On receipt of Gordon's letter, Newall designed a wire rope machine, consisting of four strands and four wires to a strand. On Gordon's return to the UK in 1839, he formed a partnership with Robert and Charles Liddell, registering ''R.S. Newall and Company'' in Dundee. On 17 Augu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Link Chain
A chain is a serial assembly of connected pieces, called links, typically made of metal, with an overall character similar to that of a rope in that it is flexible and curved in compression but linear, rigid, and load-bearing in tension. A chain may consist of two or more links. Chains can be classified by their design, which can be dictated by their use: * Those designed for lifting, such as when used with a hoist; for pulling; or for securing, such as with a bicycle lock, have links that are torus shaped, which make the chain flexible in two dimensions (the fixed third dimension being a chain's length). Small chains serving as jewellery are a mostly decorative analogue of such types. * Those designed for transferring power in machines have links designed to mesh with the teeth of the sprockets of the machine, and are flexible in only one dimension. They are known as roller chains, though there are also non-roller chains such as block chains. Two distinct chains can be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Springer Publishing
Springer Publishing Company is an American publishing company of academic journals and books, focusing on the fields of nursing, gerontology, psychology, social work, counseling, public health, and rehabilitation (neuropsychology). It was established in 1951 by Bernhard Springer, a great-grandson of Julius Springer, and is based in Midtown Manhattan, New York City. History Springer Publishing Company was founded in 1950 by Bernhard Springer, the Berlin-born great-grandson of Julius Springer, who founded Springer-Verlag (now Springer Science+Business Media). Springer Publishing's first landmark publications included ''Livestock Health Encyclopedia'' by R. Seiden and the 1952 ''Handbook of Cardiology for Nurses''. The company's books soon branched into other fields, including medicine and psychology. Nursing publications grew rapidly in number, as Modell's ''Drugs in Current Use'', a small annual paperback, sold over 150,000 copies over several editions. Solomon Garb's ''Labo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Encyclopædia Britannica
The (Latin for "British Encyclopædia") is a general knowledge English-language encyclopaedia. It is published by Encyclopædia Britannica, Inc.; the company has existed since the 18th century, although it has changed ownership various times through the centuries. The encyclopaedia is maintained by about 100 full-time editors and more than 4,000 contributors. The 2010 version of the 15th edition, which spans 32 volumes and 32,640 pages, was the last printed edition. Since 2016, it has been published exclusively as an online encyclopaedia. Printed for 244 years, the ''Britannica'' was the longest running in-print encyclopaedia in the English language. It was first published between 1768 and 1771 in the Scottish capital of Edinburgh, as three volumes. The encyclopaedia grew in size: the second edition was 10 volumes, and by its fourth edition (1801–1810) it had expanded to 20 volumes. Its rising stature as a scholarly work helped recruit eminent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Germany
Germany,, officially the Federal Republic of Germany, is a country in Central Europe. It is the second most populous country in Europe after Russia, and the most populous member state of the European Union. Germany is situated between the Baltic and North seas to the north, and the Alps to the south; it covers an area of , with a population of almost 84 million within its 16 constituent states. Germany borders Denmark to the north, Poland and the Czech Republic to the east, Austria and Switzerland to the south, and France, Luxembourg, Belgium, and the Netherlands to the west. The nation's capital and most populous city is Berlin and its financial centre is Frankfurt; the largest urban area is the Ruhr. Various Germanic tribes have inhabited the northern parts of modern Germany since classical antiquity. A region named Germania was documented before AD 100. In 962, the Kingdom of Germany formed the bulk of the Holy Roman Empire. During the 16th ce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
_Erskine_Hazard_(1790-1865).jpg "Click for more on -> Erskine Hazard")
