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Canon De 340 Modèle 1912 à Berceau
The Canon de 340 modèle 1912 à berceau was a French railway gun used by the French Army and the United States Army during World War I. The guns were used again by the French Army during World War II. History Although the majority of combatants had heavy field artillery prior to the outbreak of the First World War, none had adequate numbers of heavy guns in service, nor had they foreseen the growing importance of heavy artillery once the Western Front stagnated and trench warfare set in. Since aircraft of the period were not yet capable of carrying large diameter bombs the burden of delivering heavy firepower fell on the artillery. Two sources of heavy artillery suitable for conversion to field use were surplus coastal defense guns and naval guns. However, a paradox faced artillery designers of the time; while large caliber naval guns were common, large caliber land weapons were not due to their weight, complexity, and lack of mobility. Large caliber field guns often requir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haussimont
Haussimont () is a commune in the Marne department in north-eastern France. See also *Communes of the Marne department The following is a list of the 613 communes in the French department of Marne. The communes cooperate in the following intercommunalities (as of 2020):Communes of Marne (department) {{Marne-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Normandie-class Battleship
The ''Normandie'' class consisted of five dreadnought battleships ordered for the French Navy in 1912–1913. It comprised ''Normandie'', the lead ship, ''Flandre'', ''Gascogne'', ''Languedoc'', and . The design incorporated a radical arrangement for the twelve 340 mm (13.4 in) main battery guns: three quadruple-gun turrets, the first of their kind, as opposed to the twin-gun turrets used by most other navies. The first four ships were also equipped with an unusual hybrid propulsion system that used both steam turbines and Marine steam engine#Triple or multiple expansion, triple-expansion steam engines to increase fuel efficiency. The ships were never completed due to shifting production requirements and a shortage of labor after the beginning of World War I in 1914. The first four ships were sufficiently advanced in construction to permit their Ceremonial ship launching, launching to clear the slipways for other, more important work. Many of the guns built for the ship ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Le Pont-de-Claix
Le Pont-de-Claix (, literally ''The Bridge of Claix''; frp, Lo Pont-de-Cllês) is a commune in the Isère department in southeastern France. It is part of the Grenoble urban unit The urban unit of Grenoble (french: unité urbaine de Grenoble) is a French urban unit centred on the city of Grenoble. An urban unit is a contiguously built-up area with at least 2,000 inhabitants, according to the definition by the French statisti ... (agglomeration). INSEE Population International relations Le Pont-de-Claix is twinned with: *[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thionville
Thionville (; ; german: Diedenhofen ) is a city in the northeastern French department of Moselle. The city is located on the left bank of the river Moselle, opposite its suburb Yutz. History Thionville was settled as early as the time of the Merovingians. After the fall of the Western Roman Empire, the region was inhabited by the Germanic Alamanni. It was known in the Latin of that era as ''Theudonevilla'' or ''Totonisvilla''. King Pepin the Short had a royal palace constructed here. The Synod of Thionville was held here beginning on February 2, 835. It reinstated Emperor Louis the Pious and reversed his former conviction on crimes — none of which he actually committed — and deposed the Archbishop of Rheims, Ebbo. The Synod was composed of 43 bishops. On February 28, 835, in Mainz, Ebbo admitted that Louis had not committed the crimes of which he had been indicted and for which he had been deposed as Holy Roman Emperor. From the 10th century onward, the area ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Italian Front (World War I)
The Italian front or Alpine front ( it, Fronte alpino, "Alpine front"; in german: Gebirgskrieg, "Mountain war") involved a series of battles at the border between Austria-Hungary and Italy, fought between 1915 and 1918 in the course of World War I. Following secret promises made by the Allies in the 1915 Treaty of London, Italy entered the war aiming to annex the Austrian Littoral, northern Dalmatia, and the territories of present-day Trentino and South Tyrol. Although Italy had hoped to gain the territories with a surprise offensive, the front soon bogged down into trench warfare, similar to that on the Western Front in France, but at high altitudes and with very cold winters. Fighting along the front displaced much of the local population, and several thousand civilians died from malnutrition and illness in Italian and Austro-Hungarian refugee-camps. The Allied victory at Vittorio Veneto, the disintegration of the Habsburg empire, and the Italian capture of Trento and Tri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Derrick
A derrick is a lifting device composed at minimum of one guyed mast, as in a gin pole, which may be articulated over a load by adjusting its guys. Most derricks have at least two components, either a guyed mast or self-supporting tower, and a boom hinged at its base to provide articulation, as in a ''stiffleg'' derrick. The most basic type of derrick is controlled by three or four lines connected to the top of the mast, which allow it both to move laterally and cant up and down. To lift a load, a separate line runs up and over the mast with a hook on its free end, as with a crane. Forms of derricks are commonly found aboard ships and at docking facilities. Some large derricks are mounted on dedicated vessels, and known as floating derricks and sheerlegs. The term derrick is also applied to the framework supporting a drilling apparatus in an oil rig. The derrick derives its name from a type of gallows named after Thomas Derrick, an Elizabethan era English executioner. Types ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glossary Of British Ordnance Terms
This article explains terms used for the British Armed Forces' ordnance (i.e.: weapons) and also ammunition. The terms may have slightly different meanings in the military of other countries. BD Between decks: applies to a naval gun mounting in which part of the rotating mass is below the deck, and part of it is above the deck. This allows for a lower profile of turret, meaning that turrets need not be superfiring (i.e. they can be mounted on the same deck and not obstruct each other at high angles of elevation.) BL The term BL, in its general sense, stood for breech loading, and contrasted with muzzle loading. The shell was loaded via the breech (i.e. the gunner's end of the barrel, which opened) followed by the propellant charge, and the breech mechanism was closed to seal the chamber. Breech loading, in its formal British ordnance sense, served to identify the gun as the type of rifled breechloading gun for which the powder charge was loaded in a silk or cloth bag and the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Counterweight
A counterweight is a weight that, by applying an opposite force, provides balance and stability of a mechanical system. The purpose of a counterweight is to make lifting the load faster and more efficient, which saves energy and causes less wear and tear on the lifting machine. Counterweights are often used in traction lifts (elevators), cranes and funfair rides. In these applications, the expected load multiplied by the distance that load will be spaced from the central support (called the "tipping point") must be equal to the counterweight's mass times its distance from the tipping point in order to prevent over-balancing either side. This distance times mass is called the load moment. A counterbalance is a weight or force that balances or offsets another as when two objects of equal weight, power, or influence are acting in opposition to each other. The objects are then said to be in counterbalance. Counterweights in action Trebuchet: There are five major components of a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trunnion
A trunnion (from Old French "''trognon''", trunk) is a cylindrical protrusion used as a mounting or pivoting point. First associated with cannons, they are an important military development. Alternatively, a trunnion is a shaft that positions and supports a tilting plate. This is a misnomer, as in reality it is a cradle for the true trunnion. In mechanical engineering (see the 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. As they allowed the muzzle to be raised and lowered easily, the integral casting of trunnions is seen by military historians as one of the most important advances in early field artillery. With the creation of larger and more powerful siege guns in the early 15th century, a n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jackscrew
A jackscrew, or screw jack, is a type of jack that is operated by turning a leadscrew. It is commonly used to lift moderately and heavy weights, such as vehicles; to raise and lower the horizontal stabilizers of aircraft; and as adjustable supports for heavy loads, such as the foundations of houses. Description A screw jack consists of a heavy-duty vertical screw with a load table mounted on its top, which screws into a threaded hole in a stationary support frame with a wide base resting on the ground. A rotating collar on the head of the screw has holes into which the handle, a metal bar, fits. When the handle is turned clockwise, the screw moves further out of the base, lifting the load resting on the load table. In order to support large load forces, the screw is usually formed with Acme threads. Advantages An advantage of jackscrews over some other types of jack is that they are ''self-locking'', which means when the rotational force on the screw is removed, it will rema ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Compagnie Des Forges Et Aciéries De La Marine Et D'Homécourt
The Compagnie des forges et aciéries de la marine et d'Homécourt (FAMH) (Company of marine forges and steelworks and of Homécourt) was a French industrial enterprise that made iron and steel products for the French navy, army and railroads. It is often known as Saint-Chamond from its main location in Saint-Chamond, Loire. Origins In 1815 James Jackson (steelmaker), James Jackson, a manufacturer from Birmingham, England, set a steelworks near Saint-Étienne at Trablaine. Jackson returned to England around 1823. His sons, naturalized Frenchmen, established an important steelworks at Assailly in 1830. In 1837 H. Pétin and J. M. Gaudet, mechanics and forgers, set up shops at Saint-Chamond, Loire, Saint-Chamond and Rive-de-Gier. In 1841 Pétin et Gaudet introduced one of the first steam hammers at their works. Later they introduced innovations such as a mobile crane for moving large pieces around the works, and a hydraulic press. Starting in 1771 the Neyrand brothers became owners ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bogie
A bogie ( ) (in some senses called a truck in North American English) is a chassis or framework that carries a wheelset, attached to a vehicle—a modular subassembly of wheels and axles. Bogies take various forms in various modes of transport. A bogie may remain normally attached (as on many railroad cars and semi-trailers) or be quickly detachable (as the dolly in a road train or in railway bogie exchange); it may contain a suspension within it (as most rail and trucking bogies do), or be solid and in turn be suspended (as most bogies of tracked vehicles are); it may be mounted on a swivel, as traditionally on a railway carriage or locomotive, additionally jointed and sprung (as in the landing gear of an airliner), or held in place by other means (centreless bogies). In Scotland, the term is used for a child’s (usually home-made) wooden cart. While ''bogie'' is the preferred spelling and first-listed variant in various dictionaries, bogey and bogy are also used. Rai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
