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Wendel Bollman
Wendel Bollman (January 21, 1814 – 1884) was an American self-taught civil engineer, best known for his iron railway bridges. Only one of his patented "Bollman truss" bridges survives, the Bollman Truss Railroad Bridge in Savage, Maryland. The Wells Creek Bollman Bridge near Meyersdale, Pennsylvania is also standing, although that bridge uses the Warren truss system. Early life and career Bollman was born in Baltimore, Maryland to German History of the Germans in Baltimore, Maryland, immigrants, and was the seventh of eight children. His father died when Wendell was 11, and he quit school to support his family. Bollman began his career with the Baltimore and Ohio Railroad (B&O) as a carpenter in 1828, just as the B&O began laying track. He left shortly thereafter to build houses. During this period he married Ann Smith; the couple would have 10 children. In 1837 he returned to the B&O as a carpenter, but was soon promoted to line foreman by Benjamin H. Latrobe, II. Alt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
B & O Railroad Potomac River Crossing
The B & O Railroad Potomac River Crossing is a historic site where a set of railroad bridges, originally built by the Baltimore and Ohio Railroad, span the Potomac River between Sandy Hook, Maryland and Harpers Ferry, West Virginia. The site was added to the National Register of Historic Places on February 14, 1978, for its significance in commerce, engineering, industry, invention, and transportation. With History The original Harper's Ferry operated from 1733 until it was replaced by a timber covered road bridge in about 1824 at the confluence of the Potomac and Shenandoah Rivers. Built in 1836–1837, the B&O's first crossing over the Potomac was an covered wood truss. It was the only rail crossing of the Potomac River until after the American Civil War. The single-track bridge, composed of six river spans plus a span over the Chesapeake and Ohio Canal, was designed by Benjamin Henry Latrobe, II. In 1837 the Winchester and Potomac Railroad reached Harpers Ferry from th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heritage New Zealand
Heritage New Zealand Pouhere Taonga (initially the National Historic Places Trust and then, from 1963 to 2014, the New Zealand Historic Places Trust; in ) is a Crown entity that advocates for the protection of Archaeology of New Zealand, ancestral sites and heritage buildings in New Zealand. It was set up through the Historic Places Act 1954 with a mission to "...promote the identification, protection, preservation and conservation of the historical and cultural heritage of New Zealand" and is an autonomous Crown entity. Its current enabling legislation is the Heritage New Zealand Pouhere Taonga Act 2014. History Charles Bathurst, 1st Viscount Bledisloe gifted the site where the Treaty of Waitangi was signed to the nation in 1932. The subsequent administration through the Waitangi Trust is sometimes seen as the beginning of formal heritage protection in New Zealand. Public discussion about heritage protection occurred in 1940 in conjunction with the centenary of the signing of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South Island
The South Island ( , 'the waters of Pounamu, Greenstone') is the largest of the three major islands of New Zealand by surface area, the others being the smaller but more populous North Island and Stewart Island. It is bordered to the north by Cook Strait, to the west by the Tasman Sea, to the south by the Foveaux Strait and Southern Ocean, and to the east by the Pacific Ocean. The South Island covers , making it the List of islands by area, world's 12th-largest island, constituting 56% of New Zealand's land area. At low altitudes, it has an oceanic climate. The most populous cities are Christchurch, Dunedin, Nelson, New Zealand, Nelson and Invercargill. Prior to European settlement, Te Waipounamu was sparsely populated by three major iwi – Kāi Tahu, Kāti Māmoe, and the historical Waitaha (South Island iwi), Waitaha – with major settlements including in Kaiapoi Pā near modern-day Christchurch. During the Musket Wars expanding iwi colonised Te Tau Ihu Māori, Te Tau Ihu, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Old Rakaia Gorge Bridge
Old or OLD may refer to: Places *Old, Baranya, Hungary *Old, Northamptonshire, England *Old Street station, a railway and tube station in London (station code OLD) *OLD, IATA code for Old Town Municipal Airport and Seaplane Base, Old Town, Maine, United States People *Old (surname) Music *OLD (band), a grindcore/industrial metal group * ''Old'' (Danny Brown album), a 2013 album by Danny Brown * ''Old'' (Starflyer 59 album), a 2003 album by Starflyer 59 * "Old" (song), a 1995 song by Machine Head *"Old", a 1982 song by Dexys Midnight Runners from ''Too-Rye-Ay'' Other uses * ''Old'' (film), a 2021 American thriller film *''Oxford Latin Dictionary'' *Online dating *Over-Locknut Distance (or Dimension), a measurement of a bicycle wheel and frame See also *Old age *List of people known as the Old *''Old LP'', a 2019 album by That Dog * * *Olde, a list of people with the surname *Olds (other) Olds may refer to: People * The olds, a jocular and irreverent online nick ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Great Allegheny Passage
The Great Allegheny Passage (GAP) is a rail trail A rail trail or railway walk is a shared-use path on a Right of way#Rail right of way, railway right of way. Rail trails are typically constructed after a railway has been abandoned and the track has been removed but may also share the rail corr ... between Pittsburgh, Pittsburgh, Pennsylvania and Cumberland, Maryland. Together with the Chesapeake and Ohio Canal, C&O Canal towpath, the GAP is part of a route between Pittsburgh and Washington, D.C., that is popular with through hikers and cyclists. History The GAP follows former right-of-way of the Baltimore and Ohio Railroad, Pittsburgh and Lake Erie Railroad, Union Railroad (Pittsburgh, Pennsylvania), Union Railroad, and Western Maryland Railway. The first section of the GAP— near Ohiopyle, Pennsylvania, Ohiopyle—opened in 1986. The section between Woodcock Hollow and Cumberland opened on December 13, 2006. The GAP was completed in 2013 when the section between West ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Industrial Spur
A branch line is a secondary railway line which branches off a more important through route, usually a main line. A very short branch line may be called a spur line. Branch lines may serve one or more industries, or a city or town not located on a main line. Branch lines may also connect two or more main lines. Industrial spur An industrial spur is a type of secondary track used by railroads to allow customers at a location to load and unload railcars without interfering with other railroad operations. Industrial spurs can vary greatly in length and railcar capacity depending on the requirements of the customer the spur is serving. In heavily industrialized areas, it is not uncommon for one industrial spur to have multiple sidings to several different customers. Typically, spurs are serviced by local trains responsible for collecting small numbers of railcars and delivering them to a larger yard, where these railcars are sorted and dispatched in larger trains with other ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cast Iron
Cast iron is a class of iron–carbon alloys with a carbon content of more than 2% and silicon content around 1–3%. Its usefulness derives from its relatively low melting temperature. The alloying elements determine the form in which its carbon appears: Cast iron#White cast iron, white cast iron has its carbon combined into an iron carbide named cementite, which is very hard, but brittle, as it allows cracks to pass straight through; Grey iron, grey cast iron has graphite flakes which deflect a passing crack and initiate countless new cracks as the material breaks, and Ductile iron, ductile cast iron has spherical graphite "nodules" which stop the crack from further progressing. Carbon (C), ranging from 1.8 to 4 wt%, and silicon (Si), 1–3 wt%, are the main alloying elements of cast iron. Iron alloys with lower carbon content are known as steel. Cast iron tends to be brittle, except for malleable iron, malleable cast irons. With its relatively low melting point, g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wrought Iron
Wrought iron is an iron alloy with a very low carbon content (less than 0.05%) in contrast to that of cast iron (2.1% to 4.5%), or 0.25 for low carbon "mild" steel. Wrought iron is manufactured by heating and melting high carbon cast iron in an open charcoal or coke hearth or furnace in a process known as puddling. The high temperatures cause the excess carbon to oxidise, the iron being stirred or puddled during the process in order to achieve this. As the carbon content reduces, the melting point of the iron increases, ultimately to a level which is higher than can be achieved by the hearth, hence the wrought iron is never fully molten and many impurities remain. The primary advantage of wrought iron over cast iron is its malleability - where cast iron is too brittle to bend or shape without breaking, wrought iron is highly malleable, and much easier to bend. Wrought iron is a semi-fused mass of iron with fibrous slag inclusions (up to 2% by weight), which give it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Locomotive
A locomotive is a rail transport, rail vehicle that provides the motive power for a train. Traditionally, locomotives pulled trains from the front. However, Push–pull train, push–pull operation has become common, and in the pursuit for longer and heavier freight trains, companies are increasingly using distributed power: single or multiple locomotives placed at the front and rear and at intermediate points throughout the train under the control of the leading locomotive. Etymology The word ''locomotive'' originates from the Latin language, Latin 'from a place', Ablative case, ablative of 'place', and the Medieval Latin 'causing motion', and is a shortened form of the term ''locomotive engine'', which was first used in 1814 to distinguish between self-propelled and stationary steam engines. Classifications Prior to locomotives, the motive force for railways had been generated by various lower-technology methods such as human power, horse power, Gravity railroad, g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ilchester MD Bollan Truss Bridge For B&O RR Over Patapsco River
Ilchester is a village and civil parish, situated on the River Yeo or Ivel, north of Yeovil, in the English county of Somerset. Originally a Roman town, and later a market town, Ilchester has a rich medieval history and was a notable settlement in the county; around the 12th and 13th centuries it was effectively the county town. It had, however, declined in size and importance by the beginning of the 18th century, and the last markets were held in 1833.Local Histories Ilchester In 1889 the historic corporation that had governed the town (the Bailiff and Burgesses) was dissolved.Ilchester Parish Council - Ilchester Town Trust Ilches ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
