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Drawbridge - Cabaña Fortress
A drawbridge or draw-bridge is a type of moveable bridge typically at the entrance to a castle or tower surrounded by a moat. In some forms of English, including American English, the word ''drawbridge'' commonly refers to all types of moveable bridges, such as bascule bridges, vertical-lift bridges and swing bridges, but this article concerns the narrower historical definition where the bridge is used in a defensive structure. As used in castles or defensive structures, drawbridges provide access across defensive structures when lowered, but can quickly be raised from within to deny entry to an enemy force. Castle drawbridges Medieval castles were usually defended by a ditch or moat, crossed by a wooden bridge. In early castles, the bridge might be designed to be destroyed or removed in the event of an attack, but drawbridges became very common. A typical arrangement would have the drawbridge immediately outside a gatehouse, consisting of a wooden deck with one edge hinged ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drawbridge
A drawbridge or draw-bridge is a type of moveable bridge typically at the entrance to a castle or tower surrounded by a moat. In some forms of English, including American English, the word ''drawbridge'' commonly refers to all types of moveable bridges, such as bascule bridges, vertical-lift bridges and swing bridges, but this article concerns the narrower historical definition where the bridge is used in a defensive structure. As used in castles or defensive structures, drawbridges provide access across defensive structures when lowered, but can quickly be raised from within to deny entry to an enemy force. Castle drawbridges Middle Ages, Medieval castles were usually defended by a ditch or moat, crossed by a wooden bridge. In early castles, the bridge might be designed to be destroyed or removed in the event of an attack, but drawbridges became very common. A typical arrangement would have the drawbridge immediately outside a gatehouse, consisting of a wooden Deck (bridge), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tower
A tower is a tall Nonbuilding structure, structure, taller than it is wide, often by a significant factor. Towers are distinguished from guyed mast, masts by their lack of guy-wires and are therefore, along with tall buildings, self-supporting structures. Towers are specifically distinguished from buildings in that they are built not to be habitable but to serve other functions using the height of the tower. For example, the height of a clock tower improves the visibility of the clock, and the height of a tower in a fortified building such as a castle increases the visibility of the surroundings for defensive purposes. Towers may also be built for observation tower, observation, leisure, or telecommunication purposes. A tower can stand alone or be supported by adjacent buildings, or it may be a feature on top of a larger structure or building. Etymology Old English ''torr'' is from Latin ''turris'' via Old French ''tor''. The Latin term together with Greek language, Greek τύ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Portcullis
A portcullis () is a heavy, vertically closing gate typically found in medieval fortifications. It consists of a latticed Grille (architecture), grille made of wood and/or metal, which slides down grooves inset within each jamb of the gateway. Usage Portcullises fortified the entrances to many medieval castles, securely closing them off during times of attack or siege. Every portcullis was mounted in vertical grooves in the walls of the castle and could be raised or lowered quickly by using chains or ropes attached to an internal winch. Portcullises had an advantage over standard gates in that they could be closed immediately at a time of crisis by a single guard. Two portcullises to the main Gate, entrance would often be used. The one closer to the inside would be closed first, and then the one further away. This was used to trap enemies, and burning wood or fire-heated sand would usually be dropped onto them from murder-holes or the roof. Early thermal weapons#Hot oil, Hot oi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drawbridge Mentality
Drawbridge mentality, also known as fortress mentality is a Conservatism, conservative and Opposition to immigration, anti-immigrant attitude of prior Immigration, immigrants in an established community. Drawbridge mentality can encompass denying immigration to people, businesses and also denying building developments which could facilitate immigration, such as affordable housing. The conflict of drawbridge mentality often emerges between city councils which wish to expand, and residents concerned about losing property value or other economic or political assets. It is often unclear whether the intention of certain policies is to achieve a drawbridge mentality, or if the policies have other economic or political goals. For example, Impact fee, impact fees reduce immigration by raising entry costs, but can also be argued to offset lowering property taxes. The drawbridge mentality can allow governments or communities to avoid providing humanitarian aid to immigrants by denying respo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Double-beam Drawbridge
A double-beam drawbridge, seesaw or folding bridge is a movable bridge . It opens by rotation about a horizontal axis parallel to the water. Historically, the double-beam drawbridge has emerged from the drawbridge. A (double-beam) drawbridge has counterweights, so that operating requires less energy compared with such a bridge without counterweights. As a bascule bridge, the (double-beam) drawbridge has multiple hinges. The road surface is connected to the bottom hinge close to street level. Above the hinge is a portal. A rotating arm, the balance, is attached to the portal high up off the ground. On one side of the balance hangs the counterweight, the balance box, on the other side, the arm is hinged to two vertical beams that are on the other end hinged to the tip of the bridge deck. So when the bridge goes up, the balance and the bridge deck turn approximately parallel. The movement of the combined beams have the characteristics of a four-bar linkage. The drawback of a tr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guthrie Rolling Bridge
A Guthrie rolling bridge was a kind of retractable bridge, an 18th-century version of the drawbridge. It was commonly installed as the access across the narrow steep sided ditches characteristic of the polygonal forts of this era. Rolling bridges were unhinged, and remained horizontal as they were retracted within the gates of a fortification, similar in operation to a modern thrust bridge. Running the bridge out Running the bridge out is effected by pushing it along its rails until the outer two wheels are at the edge of the granite sill of the ditch. When the bridge is pushed beyond this point the two outer wheels do not descend the slopes of the granite slabs but instead the bridge remains in a horizontal position. This is due to the centre axle being offset from the centre of the girders causing the bridge to run on its inner two wheels. The middle two wheels follow along the trays. When the bridge is just less than halfway out, the ends of the centre axle then engage in t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Palmerston Forts
The Palmerston Forts are a group of forts and associated structures around the coasts of the United Kingdom and Ireland. The forts were built during the Victorian period on the recommendations of the 1860 Royal Commission on the Defence of the United Kingdom, prompted by concerns about the strength of the French Navy, and strenuous debate in Parliament about whether the cost could be justified. The name comes from their association with Lord Palmerston, who was Prime Minister at the time and promoted the idea. The works were also known as Palmerston's Follies, partly because the first ones which were around Portsmouth, had their main armament facing inland to protect Portsmouth from a land-based attack, and thus (as it appeared to some) facing the wrong way to defend from a French attack. The name also derived from the use of the term "folly" to indicate " a costly ornamental building with no practical value". They were criticized because at the time of their completion, the t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trunnion
A trunnion () is a cylinder, cylindrical Boss (engineering), protrusion used as a mounting or pivoting point. First associated with cannons, they are an important military development. In mechanical engineering (see the Trunnion#Trunnion bearings, trunnion bearing section below), it is one part of a rotating joint where a shaft (the trunnion) is inserted into (and turns inside) a full or partial cylinder. Medieval history In a cannon, the trunnions are two projections cast just forward of the center of mass of the cannon and fixed to a two-wheeled movable gun carriage. With the creation of larger and more powerful siege guns in the early 15th century, a new way of mounting them became necessary. Stouter gun carriages were created with reinforced wheels, axles, and “trails” which extended behind the gun. Guns were now as long as in length and they were capable of shooting iron projectiles weighing from . When discharged, these wrought iron balls were comparable in range ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Helmingham Hall
Helmingham Hall is a moated manor house in Helmingham, Suffolk, England. It was begun by John Tollemache in 1480 and has been owned by the Baron Tollemache, Tollemache family ever since. The house is built around a courtyard in typical late medieval/Tudor style. The house is Listed building#England and Wales, listed Grade I on the National Heritage List for England, and its park and formal gardens are also Grade I listed on the Register of Historic Parks and Gardens of special historic interest in England, Register of Historic Parks and Gardens. History The present Helmingham Hall may have been initially constructed in 1510 on the site of an earlier house called Creke Hall. The exterior was altered between 1745 and 1760, again in 1800 by John Nash (architect), John Nash, and in 1840. The original half-timber, half-timbered walls have been concealed by brick and tiles. The house is surrounded by a moat 60 feet wide, over which it is reached only by two working drawbridges, whic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Château Du Plessis-Bourré
Château du Plessis-Bourré is a château in the Loire Valley in France, situated in the Commune in France, commune of Écuillé in the Maine-et-Loire department. Built in less than 5 years from 1468 to 1472 by Finance Minister Jean Bourré, the principal advisor to Louis XI of France, King Louis XI. The château has not been modified externally since its construction and still has a fully working drawbridge. It was classified as a Monument historique in 1931. Château du Plessis-Bourré was once owned by La Maison De Nuchèze. Jacques de Nuchèze the fourth child of Guillaume de Nuchèze IV Seigneur de Baudiment, des Francs, de Brain, de Chincé & de Batrisse died after 1486 and married Catherine des Francs whose parents were Louis des Francs, Seigneu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Château
A château (, ; plural: châteaux) is a manor house, or palace, or residence of the lord of the manor, or a fine country house of nobility or gentry, with or without fortifications, originally, and still most frequently, in French-speaking regions. Nowadays, a ''château'' may be any stately residence built in a French style; the term is additionally often used for a winegrower's estate, especially in the Bordeaux region of France. Definition The word château is a French word that has entered the English language, where its meaning is more specific than it is in French. The French word ''château'' denotes buildings as diverse as a medieval fortress, a Renaissance palace and a fine 19th-century country house. Care should therefore be taken when translating the French word ''château'' into English, noting the nature of the building in question. Most French châteaux are "palaces" or fine " country houses" rather than "castles", and for these, the word "château" is appropr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Herstmonceux Castle
Herstmonceux Castle is a brick-built castle, dating from the 15th century, near Herstmonceux, East Sussex, England. It is one of the oldest significant brick buildings still standing in England. The castle was renowned for being one of the first buildings to use that material in England, and was built using bricks taken from the local clay, by builders from Flanders. It dates from 1441. Construction began under the then-owner, Roger Fiennes, Sir Roger Fiennes, and was continued after his death in 1449 by his son, Richard Fiennes, 7th Baron Dacre, Lord Dacre. The castle was gifted to Queen's University at Kingston, a Canadian university, in 1993 by Alfred and Isabel Bader. The parks and gardens of Herstmonceux Castle and Place are Grade II* listed on the Register of Historic Parks and Gardens of special historic interest in England, Register of Historic Parks and Gardens. Other listed structures on the Herstmonceux estate include the Grade II listed walled garden to the north ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
