Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. 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 lifted to and discharged at the top. Historically, chain pumps were known and used for centuries in the ancient Middle East, Europe, and China.

Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.