File:Tiangong Kaiwu Chain Pumps.jpg
These illustrations were printed in the Tiangong Kaiwu encyclopedia of 1637, written by the Ming Dynasty encyclopedist Song Yingxing (1587-1666). They can be found on pages 15 and 18 of E-tu Zen Sun and Shiou-Chuan Sun's English translation of the Tiangong Kaiwu (Pennsylvania University State Press, 1966).
This image was taken from
http://www.chinawater.net.cn/kjcg/CWSArticle_View.asp?CWSNewsID=17233