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History Of Firefighting
The history of organized firefighting Firefighting in ancient Rome, began in ancient Rome while under the rule of the first Roman Emperor Augustus. Prior to that, Ctesibius, Ctesibius, a Greek citizen of Alexandria, developed the first fire pump in the third century BC, which was later improved upon in a design by Hero of Alexandria in the first century BC. Ancient Rome Roman Emperor Augustus formed a group of slaves, ''Vigiles'', in AD 6 to combat fires using bucket brigades and pumps, as well as poles, hooks and even ballistae to tear down buildings in advance of the flames. The Corps Vigiles patrolled the streets of Rome to watch for fires and served as a police force. The later brigades consisted of hundreds of volunteers, all ready for action. When there was a fire, the men would line up to the nearest water source and pass buckets hand in hand to the fire. Ancient Rome, known for its architectural marvels and sophisticated infrastructure, was also one of the first civilizat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Great Fire Of London
The Great Fire of London was a major conflagration that swept through central London from Sunday 2 September to Wednesday 5 September 1666, gutting the medieval City of London inside the old London Wall, Roman city wall, while also extending past the wall to the west. The death toll is generally thought to have been relatively small, although some historians have challenged this belief. The fire started in a bakery in Pudding Lane shortly after midnight on Sunday 2 September, and spread rapidly. The use of the major firefighting technique of the time, the creation of firebreaks by means of removing structures in the fire's path, was critically delayed due to the indecisiveness of the Lord Mayor of London, Lord Mayor, Sir Thomas Bloodworth. By the time large-scale demolitions were ordered on Sunday night, the wind had already fanned the bakery fire into a firestorm which defeated such measures. The fire pushed north on Monday into the heart of the City. Order in the streets ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leather
Leather is a strong, flexible and durable material obtained from the tanning (leather), tanning, or chemical treatment, of animal skins and hides to prevent decay. The most common leathers come from cattle, sheep, goats, equine animals, buffalo, pigs and hogs, ostriches, and aquatic animals such as seals and alligators. Leather can be used to make a variety of items, including clothing, footwear, handbags, furniture, tools and sports equipment, and lasts for decades. Leather making has been practiced for more than 7,000 years and the leading producers of leather today are China and India. Critics of tanneries claim that they engage in unsustainable practices that pose health hazards to the people and the environment near them. Production processes The leather manufacturing process is divided into three fundamental subprocesses: preparatory stages, tanning, and crusting. A further subprocess, finishing, can be added into the leather process sequence, but not all leathers ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fire Hose
A fire hose (or firehose) is a high-pressure hose that carries water or other fire retardant (such as foam) to a fire to extinguish it. Outdoors, it attaches either to a fire engine, fire hydrant, or a portable fire pump. Indoors, it can permanently attach to a building's standpipe or plumbing system. The usual working pressure of a firehose can vary between while per the NFPA 1961 Fire Hose Standard, its bursting pressure is in excess of . Hose is one of the basic, essential pieces of fire-fighting equipment. It is necessary to convey water either from an open water supply, or pressurized water supply. Hoses are divided into two categories, based on their use: suction hose, and delivery hose. After use, a fire hose is usually hung to dry, because standing water that remains in a hose for a long time can deteriorate the material and render it unreliable or unusable. Therefore, the typical fire station often has a high structure to accommodate the length of a hose for su ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Netherlands
, Terminology of the Low Countries, informally Holland, is a country in Northwestern Europe, with Caribbean Netherlands, overseas territories in the Caribbean. It is the largest of the four constituent countries of the Kingdom of the Netherlands. The Netherlands consists of Provinces of the Netherlands, twelve provinces; it borders Germany to the east and Belgium to the south, with a North Sea coastline to the north and west. It shares Maritime boundary, maritime borders with the United Kingdom, Germany, and Belgium. The official language is Dutch language, Dutch, with West Frisian language, West Frisian as a secondary official language in the province of Friesland. Dutch, English_language, English, and Papiamento are official in the Caribbean Netherlands, Caribbean territories. The people who are from the Netherlands is often referred to as Dutch people, Dutch Ethnicity, Ethnicity group, not to be confused by the language. ''Netherlands'' literally means "lower countries" i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Suction And Force Pump
Suction is the day-to-day term for the movement of gases or liquids along a pressure gradient with the implication that the movement occurs because the lower pressure pulls the gas or liquid. However, the forces acting in this case do not originate from just the lower pressure side, but also from the side of the higher pressure, as a reaction to the pressure difference. When the pressure in one part of a physical system is reduced relative to another, the fluid or gas in the higher pressure region will exert a force relative to the region of lowered pressure, referred to as pressure-gradient force. If all gas or fluid is removed the result is a perfect vacuum in which the pressure is zero. Hence, no negative pressure forces can be generated. Accordingly, from a physics point of view, the objects are not pulled but pushed. Examples Pressure reduction may be static, as in a piston and cylinder arrangement, or dynamic, as in the case of a vacuum cleaner when air flow result ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Manual Pump
Hand pumps are manually operated pumps; they use human power and mechanical advantage to move fluids or air from one place to another. They are widely used in every country in the world for a variety of industrial, marine, irrigation and leisure activities. There are many different types of hand pump available, mainly operating on a piston, diaphragm or rotary vane principle with a check valve on the entry and exit ports to the chamber operating in opposing directions. Most hand pumps are either piston pumps or plunger pumps, and are positive displacement. Hand pumps are commonly used in developing countries for both community supply and self-supply of water and can be installed on boreholes or hand-dug wells. History One sort of pump once common worldwide was a hand-powered water pump, or 'pitcher pump'. It was commonly installed over community water wells in the days before piped water supplies. In parts of Britain and Ireland, it was often called ''the parish pu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hans Hautsch
Hans Hautsch (January 4, 1595January 31, 1670) was a German toolmaker and inventor from Ledergasse, Nuremberg. His father, Antoni (15631627), and grandfather, Kilian (died 1570), were both toolmakers. He married Magdalena (born 1603), the daughter of carpenter Jacob Flexlein, on June 25, 1621. They had a daughter and five sons, including Georg (born 1624, also a toolmaker), Gottfried (16341703), and Johann Andreas (born 1638). Gottfried Hautsch invented the conical touch hole for muzzle-loading guns, whereby the pan closed itself, cutting loading time by two thirds. Inventions In 1649, Hans Hautsch designed a wheelchair for gout patients. Shortly thereafter, he built a self-propelled, four-wheeled mechanical carriage: "It moves by itself and requires no initial preload, from a horse or anything else. The car travels 2000 paces every hour; it stops when the driver pleases, starts when the driver pleases, and works entirely on clockwork." Shortly afterwards, he was commissio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Germany
Germany, officially the Federal Republic of Germany, is a country in Central Europe. It lies between the Baltic Sea and the North Sea to the north and the Alps to the south. Its sixteen States of Germany, constituent states have a total population of over 84 million in an area of , making it the most populous member state of the European Union. It 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 Capital of Germany, nation's capital and List of cities in Germany by population, most populous city is Berlin and its main financial centre is Frankfurt; the largest urban area is the Ruhr. Settlement in the territory of modern Germany began in the Lower Paleolithic, with various tribes inhabiting it from the Neolithic onward, chiefly the Celts. Various Germanic peoples, Germanic tribes have inhabited the northern parts of modern Germany since classical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Force Pump
A piston pump is a type of positive displacement pump where the high-pressure seal reciprocates with the piston. Piston pumps can be used to move liquids or compress gases. They can operate over a wide range of pressures. High pressure operation can be achieved without adversely affecting flow rate. Piston pumps can also deal with viscous media and media containing solid particles. This pump type functions through a piston cup, oscillation mechanism where down-strokes cause pressure differentials, filling of pump chambers, where up-stroke forces the pump fluid out for use. Piston pumps are often used in scenarios requiring high, consistent pressure and in water irrigation or delivery systems. Types The two main types of piston pump are the lift pump and the force pump. Both types may be operated either by hand or by an engine. Lift pump In a lift pump, the upstroke of the piston draws water, through a valve, into the lower part of the cylinder. On the downstroke, water passes th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Augsburg
Augsburg ( , ; ; ) is a city in the Bavaria, Bavarian part of Swabia, Germany, around west of the Bavarian capital Munich. It is a College town, university town and the regional seat of the Swabia (administrative region), Swabia with a well preserved Altstadt (historical city centre). Augsburg is an Urban districts of Germany, urban district and home to the institutions of the Augsburg (district), Landkreis Augsburg. It is the List of cities in Bavaria by population, third-largest city in Bavaria (after Munich and Nuremberg), with a population of 304,000 and 885,000 in its metropolitan area. After Neuss, Trier, Worms, Germany, Worms, Cologne and Xanten, Augsburg is one of Germany's oldest cities, founded in 15 BC by the Romans as Augsburg#Early history, Augusta Vindelicorum and named after the Roman emperor Augustus. It was a Free Imperial City from 1276 to 1803 and the home of the patrician (post-Roman Europe), patrician Fugger and Welser families that dominated European ban ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
