A report on WatermillTrip hammer and Hydropower

Watermill of Braine-le-Château, Belgium (12th century)
A 1960s trip hammer placed at Trattenbach village, Lower Austria
The Three Gorges Dam in China; the hydroelectric dam is the world's largest power station by installed capacity.
Interior of the Lyme Regis watermill, UK (14th century)
The same trip hammer in operation, shaping a folding knife at the strike area
A water piston from the Nongshu by Wang Zhen (fl. 1290–1333)
Model of a Roman water-powered grain-mill described by Vitruvius. The millstone (upper floor) is powered by an undershot waterwheel by the way of a gear mechanism (lower floor)
A water powered trip hammer from the Nong Shu by Wang Zhen (fl. 1290–1333)
Saint Anthony Falls, United States; hydropower was used here to mill flour.
Scheme of the Roman Hierapolis sawmill, the earliest known machine to incorporate a crank and connecting rod mechanism.
Hydrodynamic powered trip hammer set, illustration from the Tiangong Kaiwu encyclopedia of 1637, written by Song Yingxing (1587–1666)
Directly water-powered ore mill, late nineteenth century
Roman turbine mill at Chemtou, Tunisia. The tangential water inflow of the millrace made the horizontal wheel in the shaft turn like a true turbine, the earliest known.
The regular indentations on the Carreg Pumsaint and similar mortar blocks are believed to stem from mechanically operated trip hammers.
Benoît Fourneyron, the French engineer who developed the first hydropower turbine
Medieval watermill
Roman stone anvil for a stamp battery
A shishi-odoshi powered by falling water breaks the quietness of a Japanese garden with the sound of a bamboo rocker arm hitting a rock.
German ship mills on the Rhine, around 1411
Water-powered ore crusher by Georgius Agricola
A conventional dammed-hydro facility (hydroelectric dam) is the most common type of hydroelectric power generation.
A Northern Song era (960–1127) water-powered mill for dehusking grain with a horizontal wheel
Water-powered hammers at Abbeydale Industrial Hamlet
Chief Joseph Dam near Bridgeport, Washington, is a major run-of-the-river station without a sizeable reservoir.
An Afghan water mill photographed during the Second Anglo-Afghan War (1878-1880). The rectangular water mill has a thatched roof and traditional design with a small horizontal mill-house built of stone or perhaps mud bricks
Micro hydro in Northwest Vietnam
A watermill in Tapolca, Veszprem County, Hungary
The upper reservoir and dam of the Ffestiniog Pumped Storage Scheme in Wales. The lower power station can generate 360 MW of electricity.
Roblin's Mill, a watermill, at Black Creek Pioneer Village in Toronto, Ontario, Canada
Watermills on the Pliva in Jajce, Bosnia and Herzegovina
The interior of a functional watermill at Weald and Downland Open Air Museum
Mulino Meraviglia in San Vittore Olona, Italy, along Olona river
Dalgarven Mill, Ayrshire, United Kingdom
A breastshot waterwheel at Dalgarven Mill, United Kingdom
Watermill in Kuusamo (Finland)
Watermill in Jahodná (Slovakia)
Watermill in Caldas Novas, Brazil
Former watermill in Kohila, Estonia
Undershot water wheel, applied for watermilling since the 1st century BC
Overshot water wheel, applied for watermilling since the 1st century BC
Breastshot water wheel, applied for watermilling since the 3rd century AD<ref name="Wikander 2000, 375"/>
Pitchback water wheel, often used to increase the power generated by a breastshot wheel<ref name="Yorke">{{cite book|last=Yorke|first=Stan|title=The Industrial Revolution explained|publisher=Countryside Books|location=Newbury, Berks|year=2005|pages=20–31|isbn=978-1-85306-935-2}}</ref>

A watermill or water mill is a mill that uses hydropower.

- Watermill

These watermills may comprise gristmills, sawmills, paper mills, textile mills, hammermills, trip hammering mills, rolling mills, wire drawing mills.

- Watermill

Since ancient times, hydropower from watermills has been used as a renewable energy source for irrigation and the operation of mechanical devices, such as gristmills, sawmills, textile mills, trip hammers, dock cranes, domestic lifts, and ore mills.

- Hydropower

Historically, trip hammers were often powered hydraulically by a water wheel.

- Trip hammer

Grain-pounders with pestles, as well as ordinary watermills, are attested as late as the middle of the 5th century AD in a monastery founded by Romanus of Condat in the remote Jura region, indicating that the knowledge of trip hammers continued into the early Middle Ages.

- Trip hammer
Watermill of Braine-le-Château, Belgium (12th century)

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