Moulin à vent dit Steen-Meulen, located in Terdeghem (Nord), is a historic monument. The monument is currently closed to visitors.
Standing on its red brick mound in the heart of Inner Flanders, the Steen-Meulen (1864) is one of the last double chevron tail tower mills in Europe, the ultimate testament to the Flemish milling art.
Standing atop a man-made mound that towers above the cereal-growing plains of the north, Steen-Meulen watches over Terdeghem like a brick sentinel. Its Flemish name - literally "stone mill" - sounds like a promise of solidity in a landscape where the wind has been king for centuries. Listed as a Historic Monument in 1977, this truncated cone tower mill built in 1864 is one of the last surviving examples of the Flemish milling tradition in France. What radically sets the Steen-Meulen apart from other mills is its extraordinary double chevron tail mechanism, a truly Flemish system of remarkable ingenuity. One of the two chevrons, which is wider than the diameter of the trunk itself, extends beyond the body of the mill and, via a crossbar, allows the adjustable cap and wings to be controlled simultaneously. To manoeuvre this massive unit without excessive effort, the Flemish millers had devised a drive carriage with a toothed wheel running on a circular rack-and-pinion monorail - a surprisingly modern mechanical solution for its time. The interior of the mill reveals two pairs of millstones driven by the classic large wooden gears, with the large wheel encircled by a brake, in accordance with tradition. The crossbeam wings, with their impressive 24-metre wingspan, are covered in canvas, an ancestral technique that consists of stretching cloth between the crossbeams to catch the wind. This relatively archaic process testifies to the persistence of traditional Flemish skills right up to the last days of wind milling. To visit the Steen-Meulen is to enter a world where the physics of the wind become precision mechanics. On demonstration days, the mill comes to life: the wings turn, the brake squeals, the millstones rumble gently, and the smell of fresh flour perfumes the northern air. It's a rare, almost anachronistic sight, transporting visitors back to the hard-working Flanders of the Second Empire.
The Steen-Meulen belongs to the family of truncated cone tower-mills, a characteristic shape in the Flemish and Dutch tradition: a cylindrical body slightly splayed towards the base, built in local red brick, topped by a swivelling wooden cap that pivots to position the wings facing the prevailing wind. The whole structure, perched on its artificial mound, gains in effective height and catches more regular winds, according to a siting principle inherited from the Middle Ages. The major technical feature is the double rafter tail system, a specifically Flemish process. One of the two wooden rafters, sized to exceed the diameter of the trunk, runs along the wall and, via an integral crossbar, transmits the rotational movement to the cap and wings simultaneously. To facilitate the orientation of this heavy assembly, an ingenious cogwheel carriage runs on a circular rack-and-pinion monorail arranged around the foot of the tower - a remarkably sophisticated mechanical solution. The four wings with crosspieces have a total span of 24 metres and are covered with canvas stretched between the crosspieces, using a process known as interlining. Inside, the wooden machinery has been preserved almost in its entirety: the large horizontal wheel, complete with brake, transmits movement to the two pairs of vertical grinding wheels via the classic wooden gearing. This mechanical furniture, a living thing subject to continuous maintenance, illustrates with great fidelity the techniques of nineteenth-century wind milling in French Flanders.
Moulin à vent dit Steen-Meulen is located in Terdeghem, Nord department, Hauts-de-France region, France.
Moulin à vent dit Steen-Meulen is currently closed to visitors.