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Pneumatic MACHINES


What are Pneumatic Machines ? Some Examples!


pneumatic device, any of various tools and instruments that generate and utilize compressed air. Examples include rock drills, pavement breakers, riveters, forging presses, paint sprayers, blast cleaners, and atomizers. Compressed-air power is flexible, economic, and safe. An air device creates no spark hazard in an explosive atmosphere and can be used under wet conditions without electric-shock hazard.

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Development of pneumatic devices ....



The ordinary hand bellows, used by early smelters and blacksmiths for working iron and other metals, was a simple type of air compressor. The air intake consisted of several holes in a piece of wood, covered with flaps that served as valves. A simple check valve in the discharge prevented air from being drawn back into the bellows during the suction stroke. In the time of Hero (probably 1st century AD), a simple jet-type compressor was used to provide air for smelting and forging.

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