It is a thick board, made with a variety of slats, with a shape between rectangular and trapezoidal, with the frontal part somewhat narrower and curved upward (like a sled or sledge) and whose bottom is covered with lithic flakes or razor-like metal blades.
As it was moved in circles over the harvest that was spread, the stone chips or blades cut the straw and the ear of wheat (which remained between the threshing board and the pebbles on the ground), thus separating the seed without damaging it.
Then farmers drag the threshing board over the stalks, first going several times around in circles, and then in figure-eights, and stirring the grain with a wooden pitchfork.
Whereas the woodworking involved is simple, even rough, the flintknapping and the inlaying of flakes into the bottom of board need specialised skills that were passed from father to son.
Patricia C. Anderson (of Centre d’Etudes Préhistoire, Antiquité et Moyen Age del CNRS), discovered archaeological remains that demonstrate the existence of threshing boards at least 8,000 years old in the Near East and Balkans.
Both count among their specialties the study of microwear analysis, through which it is possible to take a particular piece of flint or obsidian (to take the most common examples) and determine the tasks for which it was used.
[7] Concretely, the cutting of cereals leaves a very characteristic glossy pattern of wear, owing to the presence of microscopic mineral particles (phytoliths) in the stalks of the plants.
Therefore, scholars using controlled experimental replication studies and functional analysis with a scanning electron microscope are able to identify stone artefacts that were used as sickles or the teeth of threshing boards.
Analysing a sample of 200 lithic flakes and blades, selected from the best-preserved pieces, it is possible to differentiate between those used in sickles and those used in threshing boards.
The threshing boards must have been important in the protohistory of Mesopotamia, since they already appear in some of the oldest written documents discovered: specifically, several sandstone tablets from the early town of Kish (Iraq), engraved with cuneiform pictograms, which could be the world's oldest surviving written record, dating to the middle of the 4th millennium BC (Early Uruk period).
[10] One of these tablets, preserved in the Ashmolean Museum of Oxford University, appears to have pictures of threshing boards on both faces, next to some numeric symbols and other pictograms.
According to M. A. Frangipane, that the seal may illustrate a religious scene: «This seal [...] (is) interpreted as a ritual threshing scene, emphasising the ideological reference by the Arslantepe elites to images of power expressed in a Mesopotamian environment»[12]It closely resembles another scene, painted on the walls of the same site (a ceremonial procession of a person of high rank, painted in an archaic lineal style in the colours red and black), although the current condition of the wall obscures the exact nature of the vehicle in which he is seated, it is indeed possible to see that it is pulled by a pair of oxen.
[14] The discovery of a ceremonial sledge (perhaps a threshing board) with gold ornaments in the Tomb of Pu-Abi, one of the "royal tombs" of Ur, dated from the 3rd millennium BC,[15] makes clear the underlying problem of distinguishing in the ancient representations between a true threshing board and a sledge (that is, an unwheeled vehicle for hauling freight).
(Chapter XX of Iliad)Carthage, which colonized the southeastern Iberian Peninsula in the 3rd century BC, had advanced agricultural technology, greatly superior to the Roman techniques of the time.
The ancient Romans describe Tunisia, today mainly desert, as a fertile landscape of olive groves and wheat fields.
The treatises of agriculture written by Roman experts as Cato, Varro, Columella and Pliny the Elder (quoted above), touch the topic of threshing.
[29] One may add a document written in 1265, in which a woman named Doña Mayor (widow of one Don Arnal, an ecclesiastical tax collector, and thus a person of good position), leaves to the diocese chapter of Salamanca her inheritance of Valcuevo, a farm in the municipality of Valverdón, Salamanca: And I, Doña Mayor, leave on my death these two yokings of country state above referred to the Cathedral Chapter, well preserved with 76 bushels of wheat, 38 bushels of rye, and 38 bushels of barley to seed each yoking and with ploughshares, and with plows, and with ploughbeams, and with threshing boards and with all the accoutrements that a well-laid-out property should have.
We must, then, join with the despair of French historian Georges Duby, in his complaint: Through all that has been said, we can see how interesting it would be to measure the influence of technical progress on agricultural output.
The makers of threshing boards and plows were called «Briqueros», a word of French origin[citation needed] that refers to the making of tinderboxes and matchlocks for guns, which in France were called briquets, literally in archaic French: «Petite pièce d’acier don't on se sert pour tirer du feu d’un caillou.» (today, synonym of briquette or flammable matter, but also refers to a lighter) for the early firearms (Flintlocks, arquebuses, muskets...).
The three, four, or five planks had to be perfectly joined: spread with glue and pressed, using small reinforcement jigs, called tasillos (wooden cylinders glued and nailed with a mallet at the edges of a slat), and wedges.
On the front header they attached a strong hook for the barzón, or iron ring with a strap or a long rod for tying on the drafthorses or oxen.
To create the lithic flakes used to cover threshing boards, the briqueros in Cantalejo used a manufacturing technique similar to prehistoric methods of making tools, except that they used metal hammers rather than percussors made of stone, wood, or antler.
When they had to repair threshing boards at home, if they did not have any other raw materials, they would use rounded river pebbles, made of homogeneous, high-grade quartzite, which they selected during their travels.
It is necessary to pound in each flake without damaging its sharp edge, although it was impossible to avoid leaving at least some small mark (a "spontaneous retouch" in technical terms).
[34] At first, artesans from Cantalejo travelled with large carts loaded with selected threshing boards, winnowing bellows, grain measures (of different traditional dry units: celemín is a wooden case with 4,6 L, cuartilla has 14 L, and fanega equivalent to 55.5 L...) and other implements for threshing or winnowing, which they peddled from town to town.
They typically brought their entire families along; combined with their strange manner of speaking and unusual occupation, this gave the briqueros an air of mystery.
It is not a technical vocabulary, but rather a code made up of a small group of words that allows the speakers to communicate freely in the presence of strangers without others understanding the content of the conversation.
[36] The most commonly accepted opinion is that most of the words derive from French, with additions from other languages including Latin, Basque, Arabic, German, and even Caló.
In contrast, the mogag and mowrej found to the Middle East have circular holes (made with a special short, wide drill) into which are pressed small round, semicircular stones with sharp ridges.
Although the Carthaginians, heirs of the Phoenicians, brought this model to the Western Mediterranean, this implement was known at least since the second millennium BC, appearing in the Babylonian texts with a name that we can transliterate as gīš-bad.