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Door Breaching
Door breaching is a process used by military, police, or emergency services to force open closed or locked doors. A wide range of methods are available depending on the door's opening direction (inward or outward), construction materials, etc., and one or more of these methods may be used in any given situation. In the United States, residential doors typically open inward while commercial building doors usually open outward. Some breaching methods require specialized equipment and can be categorized as one of the following: mechanical breaching, ballistic breaching, hydraulic breaching, explosive breaching, or thermal breaching. Manual methods The simplest solution is to check the door knob first. Utilizing a breaching tool is unnecessary if the door is unlocked and easy to open. If the door is locked, breachers can attempt to force inward-opening doors with a strong kick. The breacher will aim to hit the door near the locking mechanism, but not kick the doorknob itself as on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crowbar (tool)
A crowbar, also called a wrecking bar, pry bar or prybar, pinch-bar, or occasionally a prise bar or prisebar, colloquially gooseneck, or pig bar, or in Australia a jemmy, is a lever consisting of a metal bar with a single curved end and flattened points, used to force two objects apart or gain mechanical advantage in lifting; often the curved end has a notch for removing nails. The design can be used as any of the three lever classes. The curved end is usually used as a first-class lever, and the flat end as a second-class lever. Designs made from thick flat steel bar are often referred to as utility bars. Materials and construction A common hand tool, the crow bar is typically made of medium-carbon steel, possibly hardened on its ends. Commonly crowbars are forged from long steel stock, either hexagonal or sometimes cylindrical. Alternative designs may be forged with a rounded I-shaped cross-section shaft. Versions using relatively wide flat steel bar are often ref ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Operation or Operations may refer to: Arts, entertainment and media * ''Operation'' (game), a battery-operated board game that challenges dexterity * Operation (music), a term used in musical set theory * ''Operations'' (magazine), Multi-Man Publishing's house organ for articles and discussion about its wargaming products * ''The Operation'' (film), a 1973 British television film * ''The Operation'' (1990), a crime, drama, TV movie starring Joe Penny, Lisa Hartman, and Jason Beghe * The Operation M.D., formerly The Operation, a Canadian garage rock band * "Operation", a song by Relient K from '' The Creepy EP'', 2001 Television Episodes * "The Operation", ''Sky Dancers'' episode 27 (1996) * "The Operation", ''The Golden Girls'' season 1, episode 18 (1986) * "The Operation", ''You're Only Young Twice'' (1997) series 2, episode 8 (1978) Shows * ''The Operation'' (1992–1998), a reality television series from TLC Business * Manufacturing operations, operation of a f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydraulic Rescue Tools
Hydraulic rescue tools, also known as jaws of life, are used by Emergency service, emergency rescue personnel to assist in the vehicle extrication, extrication of victims involved in Traffic collision, vehicle accidents or railway accidents and cutting large-sized debris of mild metal structures into smaller pieces for extraction of injured/dead victims out from building rubble in earthquake-raged areas, as well as other rescues in small spaces. These tools include cutters, spreaders, and rams. Such devices were first used in 1963 as a tool to free race car drivers from their vehicles after crashes. History The Hurst Rescue Tool was invented by George Hurst, circa 1961, after he viewed a stock car race accident in which it took workers over an hour to remove an injured driver from his car. Previously rescuers often used circular saws for vehicle extrication, but these suffered from several drawbacks. Saws can create Spark_(fire), sparks, which could start a fire, create loud s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydraulic Jack
A jack is a mechanical lifting device used to apply great forces or lift heavy loads. A mechanical jack employs a screw thread for lifting heavy equipment. A hydraulic jack uses hydraulic machinery, hydraulic power. The most common form is a car jack, floor jack or garage jack, which lifts vehicles so that maintenance can be performed. Jacks are usually rated for a maximum lifting capacity (for example, 1.5 tons or 3 tons). Industrial jacks can be rated for many tons of Mechanical load, load. Etymology The personal name ''Jack'', which came into English usage around the thirteenth century as a nickname form of ''John'', came in the sixteenth century to be used as a colloquial word for 'a man (of low status)' (much as in the modern usage 'jack of all trades, master of none'). From here, the word was 'applied to things which in some way take the place of a lad or man, or save human labour'. The first attestation in the ''Oxford English Dictionary'' of ''jack'' in the sense 'a mach ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Circular Saw
A circular saw or a buzz saw, is a power-saw using a toothed or Abrasive saw, abrasive disk (mathematics), disc or blade to cut different materials using a rotary motion spinning around an Arbor (tool), arbor. A hole saw and ring saw also use a rotary motion but are different from a circular saw. ''Circular saws'' may also be loosely used for the blade itself. Circular saws were invented in the late 18th century and were in common use in sawmills in the United States by the middle of the 19th century. A circular saw is a tool for cutting many materials such as wood, masonry, plastic, or metal and may be hand-held or mounted to a machine. In woodworking the term "circular saw" refers specifically to the hand-held type and the table saw and Miter saw#Power miter saw, chop saw are other common forms of circular saws. "Skilsaw" and "Skil saw" have become generic trademarks for conventional hand-held circular saws in the United States of America. Circular saw blades are specially d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bolt Cutter
A bolt cutter, sometimes called bolt cropper, is a tool used for cutting Screw, bolts, chains, padlocks, rebar and wire mesh. It typically has long handles and short blades, with compound hinges to maximize leverage and cutting force. A typical bolt cutter yields of cutting force for a force on the handles. There are different types of cutting blades for bolt cutters, including angle cut, center cut, shear cut, and clipper cut blades. Bolt cutters are usually available in 12, 14, 18, 24, 30, 36 and 42 inches (30.5, 35.6, 46, 61, 76, 91.4 and 107 cm) in length. The length is measured from the tip of the jaw to the end of the handle. *Angle cut has the cutter head angled for easier insertion. Typical angling is 25 to 35 degrees. *Center cut has the blades equidistant from the two faces of the blade. *Shear cut has the blades inverted to each other (such as normal paper scissor blades). *Clipper cut has the blades flush against one face (for cutting against flat surfaces). ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Padlock
Padlocks are portable Lock (security device), locks with a shackle that may be passed through an opening (such as a chain, chain link, or hasp staple) to prevent wikt:use, use, theft, vandalism or harm. Naming and etymology The term '':wikt:padlock#English, padlock'' is from the late fifteenth century. The prefix pad- is thought to be related to the Latin which may refer to the portability of a padlock; it is combined with the noun Lock and key, lock, from Old English , related to German , "hole". History There are padlocks dating to the Roman Era, 500 BC – 300 AD. They were known in early times by merchants traveling the ancient trade routes to Asia, including China. Padlocks have been used in Europe since the middle La Tène culture, La Tène period, subsequently spreading to the Roman world and the Przeworsk culture, Przeworsk and Chernyakhov cultures.Katarzyna Czarnecka, "Padlocks In The Przeworsk And The Chernyakhov Cultures In The Late Roman Period, As An Evidence O ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Enforcer (battering Ram)
Enforcer (also known informally as a "Rammit", "the Sam", "Donker", "Sam", "Bosher", and "the big red key") is the term given to a specially designed manual battering ram manufactured by Sigma Security Devices Ltd and currently used by British police and armed forces, fire services and other agencies to aid in gaining entry to premises. Construction The Enforcer is a 16 kg hardened steel construction with a steel pad at the impact end so that it can absorb the impact, and a handle at the opposite end angled so that the user can swing accurately at inward-opening doors without actually applying their own pressure more than necessary. Further, there is a handle in the middle of the tube aiding the user in handling. The Enforcer can apply more than three tonnes of impact force to door locks. It is 58 cm long. Police use In London London is the Capital city, capital and List of urban areas in the United Kingdom, largest city of both England and the United Kingdom, wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Battering Ram
A battering ram is a siege engine that originated in ancient times and was designed to break open the masonry walls of fortifications or splinter their wooden gates. In its simplest form, a battering ram is just a large, heavy log carried by several people and propelled with force against an obstacle; the ram would be sufficient to damage the target if the log were massive enough and/or it were moved quickly enough (that is, if it had enough momentum). Later rams encased the log in an arrow-proof, fire-resistant canopy mounted on wheels. Inside the canopy, the log was swung from suspensory chains or ropes. Rams proved effective weapons of war because at the time wall-building materials such as stone and brick were weak in tension, and therefore prone to cracking when impacted with force. With repeated blows, the cracks would grow steadily until a hole was created. Eventually, a breach would appear in the fabric of the wall, enabling armed attackers to force their way thr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sledgehammer
A sledgehammer is a tool with a large, flat, massive, often metal head, attached to a long wooden or solid handle. The long handle is combined with a heavy head which allows the sledgehammer to pick up momentum during a swing and applying a large force compared to hammers designed to drive nails. Along with the mallet, it shares the ability to distribute force over a wide area. This is in contrast to other types of hammers, which concentrate gravity and force in a relatively small area. Etymology The word sledgehammer is derived from the Old-English "''slægan''", which, in its first sense, means "to strike violently". The English words "slag", "slay", and "slog" are cognates. Uses The handle can range from to a full long, depending on the mass of the head. The head mass is usually . Modern heavy duty sledgehammers come with heads. Sledgehammers usually require two hands and a swinging motion involving the entire torso, in contrast to smaller hammers used for driving in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Pig (tool)
The pig is a specialty firefighting Firefighting is a profession aimed at controlling and extinguishing fire. A person who engages in firefighting is known as a firefighter or fireman. Firefighters typically undergo a high degree of technical training. This involves structural fir ... tool used mainly for roof ventilation, forcible entry and wall breaching. Invented by a member of the Austin Fire Department, the tool combines the butt-end of a flat head axe on one side and a pick on the other. The pig can be married with a Halligan to create a forcible entry system as an alternative to the classic axe and Halligan combination. References External links * {{DEFAULTSORT:Pig (tool), The Hand tools Firefighter tools ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
