The chain pump is a type of water pump where an endless chain has positioned on it a series of circular discs. One end of the chain dips in to the water, and the chain runs through a tube, slightly bigger than the diameter of the discs. As the chain is drawn up the tube, water becomes trapped between the discs and is discharged at the top. A pump is a mechanical device used to move liquids or gases. ...

They were used in European mines in the Renaissance, and illustrated by Georg Agricola in his De re Metallica.^[1] They were used in dockyards, and a number formed part of the Portsmouth Block Mills complex.^{[citation needed]} Chain pumps were commonly used on naval vessels of the time to pump the bilges, and examples are known in the nineteenth century for low-lift irrigation purposes. The Renaissance (French for rebirth, or Rinascimento in Italian), was a cultural movement in Italy (and in Europe in general) that began in the late Middle Ages, and spanned roughly the 14th through the 17th century. ... Georg Agricola Georgius Agricola (March 24, 1494 – November 21, 1555) was a German scholar and man of science. ... The Portsmouth Block Mills form part of the Portsmouth Dockyard at Portsmouth, Hampshire, England, and were built during the Napoleonic Wars to supply the British Royal Navy with pulley blocks. ...

Saqiya

A version of this kind of pump was known in ancient Roman times, sometimes with pots fixed to the chain, which, as they passed over the top pulley, tipped the water out. This occurs in a Babylonian text of c.700 BC and may be referred to in Ecclesiastes 12:6. These were commonly powered by human or animal power.^[2] 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. ... Centuries: 9th century BC - 8th century BC - 7th century BC Decades: 750s BC 740s BC 730s BC 720s BC 710s BC - 700s BC - 690s BC 680s BC 670s BC 660s BC 650s BC Events and Trends 708 BC - Spartan immigrants found Taras (Tarentum, the modern Taranto) colony in southern Italy. ... Ecclesiastes, Qohelet in Hebrew, is a book of the Hebrew Bible. ...

Chinese chain pumps

Chain pumps were also used in ancient China, described by the Han Dynasty era philosopher Wang Chong (27–97 AD). Chain pumps in China were also constructed at various times for projects of irrigation, and resembled the square-pallet type. The infamous Eastern Han court eunuch Zhang Rang once ordered the engineer Bi Lan to construct a series of square-pallet chain pumps outside the capital city of Luoyang. The renowned mechanical engineer of the Three Kingdoms era, Ma Jun, also constructed a series of chain pumps for irrigating the gardens of Emperor Ming of Wei. Illustrations of such Chinese chain pumps show them drawing water up a slanting channel. These were sometimes powered by a horizontal [[waterwheel].^[3] Later Han redirects here. ... Wang Chung (27 – 97 C.E.) (Traditional Chinese: 王充; Simplified Chinese: 王充; pinyin: Wáng Chōng) was a Chinese philosopher during the Han Dynasty who developed a rational, secular, naturalistic, and mechanistic account of the world and of human beings. ... Events The Emperor Tiberius retires to Capri, leaving the praetorian prefect Sejanus in charge of both Rome and the Empire. ... Centuries: 1st century BC - 1st century - 2nd century Decades: 0s BC - 0s - 10s - 20s - 30s - 40s - 50s - 60s - 70s - 80s - 90s - 100s Years: 92 93 94 95 96 97 98 99 100 101 102 Events Pope Evaristus succeeds Pope Clement I Tacitus advanced to consulship. ... European illustration of a Eunuch (1749) A eunuch is a castrated man; the term usually refers to those castrated in order to perform a specific social function, as was common in many societies of the past. ... Zhang Rang (張讓) (d. ... For the Technical Symposium of NITK Surathkal Engineer , see Engineer (Technical Fest). ... Luoyang (Simplified Chinese: ; Traditional Chinese: ; pinyin: ) is a prefecture-level city in western Henan province, Peoples Republic of China. ... The Three Kingdoms period (Traditional Chinese: ; Simplified Chinese: ; pinyin: ) is a period in the history of China, part of an era of disunity called the Six Dynasties. ... Ma Jun a certain officer serving under Wei that oversaw the construction of Chong Huas palace under the orders of Cao Rui. ... Cao Rui, ch. ...

See also

• Chain drive
• Su Song

Roller chain and sprocket Mack AC delivery truck at the Petersen Automotive Museum with chain drive visible Chain drive was a popular power transmission system from the earliest days of the automobile. ... Su Song 蘇頌 (1020 – 1101), style Zirong 子容, was a Chinese engineer. ...

References

1. ^ G. Agricola, In Re Metallica, <page needed>.
2. ^ Joseph Needham, Science and Civilisation in China 4(2) (1965), 352.
3. ^ J. Needham, 335ff.