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Diagram of a fireplace hand-bellows. A bellows or pair of bellows is a device constructed to furnish a strong blast of air.The simplest type consists of a flexible bag comprising a pair of rigid boards with handles joined by flexible leather sides enclosing an approximately airtight cavity which can be expanded and contracted by operating the handles, and fitted with a valve allowing air to ...
Starting in the late 18th Century, blowpipes have been powered by mechanisms, initially bladders and bellows, but now blowers, compressors and compressed gas cylinders are commonplace. While blowing air is effective, blowing oxygen produces higher temperatures, and it is also practical to invert the roles of the gasses and blow fuel through air.
See also References A amadou Main article: amadou A spongy, flammable substance prepared from bracket fungi. arson Main article: arson The crime of intentionally or maliciously lighting structures, wildland areas, cars or other property on fire. It is the deliberate setting of fires for personal, monetary or political gain. auto reignition Main article: Auto reignition A process used in gas ...
The historical text Sanguo Zhi (Records of the Three Kingdoms) records the use of both human labor and horse-power to operate metallurgic bellows of a blast furnace before water-power was applied. [7] It also records that the engineer and Prefect of Luoling Han Ji (d. 238) reinvented a similar water-powered bellows that Du Shi had earlier ...
Bellows or blower—a means for forcing air into the tuyere; Hearth—a place where the burning fuel can be contained over or against the tuyere opening. Traditionally hearths have been constructed of mud-brick , fired brick, stone, or later, constructed of iron. During operation, fuel is placed in or on the hearth and ignited.
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