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A large bellows creates a mushroom cloud at the Exploratorium in San Francisco, California.

A bellows is a device for delivering pressurized air in a controlled quantity to a controlled location. Basically, a bellows is a deformable container which has an outlet nozzle. When the volume of the bellows is decreased, the air escapes through the outlet. A bellows typically also has a separate inlet and valves or flaps for ensuring that air enters only through the inlet and exits only through the outlet. Image File history File links Broom_icon. ... ImageMetadata File history File links Download high resolution version (1600x1200, 385 KB) File links The following pages link to this file: Mushroom cloud Exploratorium ... ImageMetadata File history File links Download high resolution version (1600x1200, 385 KB) File links The following pages link to this file: Mushroom cloud Exploratorium ... Smoke billows at the exploratorium The Exploratorium is a public science museum located in the Marina District at the Palace of Fine Arts in San Francisco, California. ... Nickname: Location of the City and County of San Francisco, California Coordinates: , Country United States of America State California City-County San Francisco Founded 1776 Government  - Mayor Gavin Newsom Area  - City  47 sq mi (122 km²)  - Land  46. ... A bellows is a device for delivering pressurized air in a controlled quantity to a controlled location. ... Look up air in Wiktionary, the free dictionary. ...

Metallurgy

Several metallurgical processes, such as iron smelting and welding, require so much heat that they could only be developed after the invention of the bellows. The bellows are used to deliver additional air to the fuel, raising the rate of combustion and therefore the heat output. Electric phosphate smelting furnace in a TVA chemical plant (1942) Chemical reduction, or smelting, is a form of extractive metallurgy. ... Welding is a fabrication process that joins materials, usually metals or thermoplastics, by causing coalescence. ...

Various kinds of bellows are used in metallurgy: Metallurgy is a domain of materials science and of materials engineering that studies the physical and chemical behavior of metallic elements, their intermetallic compounds, and their mixtures, which are called alloys. ...

• Box bellows were and are traditionally used in Asia. (1)
• Pot bellows were used in ancient Egypt. (2)
• Accordion bellows, with the characteristic pleated sides, have been used in Europe for many centuries. (3)
• Piston bellows were developed in the middle of the 18th century. (4)

The ancient Chinese engineer Du Shi once applied water-power (waterwheel) to operate bellows of a blast furnace forging cast iron. The ancient Greeks, ancient Romans, and other civilizations used bellows in bloomery furnaces producing wrought iron. Middle Chinese (中古漢語, pinyin: zhōnggǔ Hànyǔ), or Ancient Chinese as used by linguist Bernhard Karlgren, refers to the Chinese language spoken during Northern and Southern Dynasties and the Sui, Tang, and Song dynasties (6th century - 10th century). ... Du Shi (Wade-Giles: Tu Shih, active 1st century AD) was a governmental Prefect of Nanyang in 31 AD and a mechanical engineer of the Eastern Han Dynasty in ancient China. ... An overshot water wheel standing 42 feet high powers the Old Mill at Berry College in Rome, Georgia A water wheel (also waterwheel, Norse mill, Persian wheel or noria) is a hydropower system; a system for extracting power from a flow of water. ... Blast furnace in Sestao, Spain. ... Cast iron usually refers to grey cast iron, but can mean any of a group of iron-based alloys containing more than 2% carbon (alloys with less carbon are carbon steel by definition). ... Ancient Greece is the term used to describe the Greek_speaking world in ancient times. ... History - Ancient history - Ancient Rome This is a List of Ancient Rome-related topics, that aims to include aspects of both the Ancient Roman Republic and Roman Empire. ... A bloomery is a type of furnace once widely used for smelting iron from its oxides. ... A wrought iron railing in Troy, New York. ...

In modern industry, reciprocating bellows are usually replaced with motorized blowers. its basically like a pump that pumps out air

Musical instruments

In musical instruments, the bellows is often employed as a substitute or regulator for air pressure provided by the human lungs. A musical instrument is a device constructed or modified with the purpose of making music. ... Human respiratory system Image:Heart-and-hullumgitwalitshnit shmulkelungs. ...

The following instruments use bellows:

• Reed organ
• Bagpipe
• Harmonium
• Portative

Cuckoo clocks also use bellows. A reed organ is an organ that generates its sounds using free metal reeds, similar to an accordion. ... A bagpipe performer in Amsterdam. ... A Harmonium is a free-standing musical keyboard instrument similar to a Reed Organ or Pipe Organ. ... A portative organ (or portatif organ) was a small medieval organ carried by the performer, who manipulated the bellows with one hand and fingered the keys with the other. ... Cuckoo clock, a so-called Jagdstück, Black Forest, ca. ...

References

1. http://www.anvilfire.com/FAQs/archives/g072002d.htm .
2. http://www.archaeogate.org/egittologia/article/182/8/mersa-gawasis-red-sea-egypt-unoisiao-and-bu-2003-2004-f.html .
3. [ref. needed]
4. http://www.davistownmuseum.org/TDMtoolGlossary.htm

See also

• sylphon for uses of metal bellows in experimental physics and engineering.

A sylphon is an old name for a cylindrical symmetry bellows. ...

External links

• http://www.wwmag.net/blacksmith.htm for bellows used in primitive blacksmithing.
• http://www.1911encyclopedia.org/Bellows for a general discussion of bellows in metal work.