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The most prevalent hydraulic pump used in maritime situations in ancient Rome was the bilge pump, which functioned to siphon collected water out of a ship's hull (Oleson 1984). The bilge pump was an improvement on the first hydraulic pumps used in antiquity: force pumps.
The device then appeared in ancient Egypt from about 200 B.C., featuring a pair of gear-wheels [dubious – discuss]. [2] A version of the chain pump was used in ancient Greece and Rome, sometimes with pots, or scoops fixed to the chain, which, as they passed over the top pulley, tipped the water out; a 2nd-century example is preserved in ...
The term saqiyah or saqiya is the usual term for water-raising devices powered by animals. [13] The term noria is commonly used for devices which use the power of moving water to turn the wheel instead. [14] Other types of similar devices are grouped under the name of chain pumps. A noria in
The screw pump is the oldest positive displacement pump. [1] The first records of a water screw, or screw pump, date back to Hellenistic Egypt before the 3rd century BC. [1] [3] The Egyptian screw, used to lift water from the Nile, was composed of tubes wound round a cylinder; as the entire unit rotates, water is lifted within the spiral tube to the higher elevation.
Literary references to water-powered marble saws in Trier, now Germany, can be found in Ausonius's late 4th-century AD poem Mosella. They attest a diversified use of water-power in many parts of the Roman Empire. [9] A complex of mills also existed on the Janiculum in Rome fed by the Aqua Traiana.
Musicians with cornua and a water organ, detail from the Zliten mosaic, 2nd century CE. The water organ or hydraulic organ (Greek: ὕδραυλις) (early types are sometimes called hydraulos, hydraulus or hydraula) is a type of pipe organ blown by air, where the power source pushing the air is derived by water from a natural source (e.g. by a waterfall) or by a manual pump.
P2 (on the right in the picture) from the top of the air supply container (C) to the top of the water supply container (B) P3 (in the middle of the picture) from the bottom of the water supply container (B), up through the bottom of the basin (A) to a height above the basin's rim. The fountain issues upwards through this pipe.
Typically, and as Hero described the device, the water is heated in a simple boiler which forms part of a stand for the rotating vessel. Where this is the case, the boiler is connected to the rotating chamber by a pair of pipes that also serve as the pivots for the chamber. Alternatively the rotating chamber may itself serve as the boiler, and ...