In the 1 st century BC, the chain pump was invented. The chain pump allows water to be pumped from lower to higher altitudes. These are used for irrigation. - ppt download
A vintage chain pump, used to be common on farms for raising water from a well Stock Photo - Alamy
tools made for agriculture
4.2 Chinese liberation pump
Chain Pump | ClipArt ETC
Explain the chain pump system?
Force and Efficiency Analyses of the Vertical Shaft Type… | Ancient Machinery Research Center
A Chinese Chain Pump With Their Singular Method Of Working It. Genuine antique print for sale.
Chain pump hi-res stock photography and images - Alamy