The word of ancient French bezel came to our language as chisel . The term refers to a tool which is used for the metal and stone machining through blows made with a hammer .
The chisel has a mouth double bevel, whose edge must be reframed with some frequency to remain effective. The ends of the chisels may vary according to the use for which they are intended: serrated chisels , flat chisels and from other classes.
Already in the Prehistory the man appealed to chisels he built in stone . From the call Age of Metals , the chisels began to be manufactured with bronze, copper, iron and other materials. These tools were used to carve stone, wood, leather and more elements.
In a chisel you can distinguish the head (the end that is hit with the hammer), the body or mango (which allows the propagation of blows), the cradle (the side sectors of the cutting part) and the cutting edge (which carries the blow to the stone that is being carved).
The stonecutters and masons, for example, appeal to chisels to modify the surface of the stones and of other materials. For this they hold the chisel with one hand and place their tip on the surface: with the other hand, they hold a hammer that they hit with the chisel. The successive impacts of the tip of the chisel on the rock are shaping its surface.
It is important to keep in mind that choosing the right chisel is key for the job to offer the desired result. If a chisel with unsuitable characteristics is used, the wrought It will not be satisfactory.
It is known as chisel plow to a vertical tillage instrument that gives the possibility of tilling the soil without the need to invert it through the intermingling of the plant remains on its surface. In recent times, it has managed to gradually replace those of landfill and disks to break the ground.
By using a chisel plow it is possible to prepare the soil so that its surface it is protected with vegetal remains to face the erosion of the water without the mixture of the strata being extreme. Thanks to this tool, the compacted soil can be broken to favor water infiltration.
When we talk about tillage vertical We refer to the characteristics of the tools and the elements with which the breakage, bursting or cracking of the ground is performed, which in this case have vertically oriented supports.
Let's see some of the advantages of this type of plow:
* Since it requires a much lower tensile force than other types of plows, savings of Energy approximately 50%;
* the soil conserves moisture better and is adequately aerated, thanks to the chisel plow allowing water filtration effectively;
* avoid and correct the problem known as "plow foot" or "stratum compacted ", which arises as a result of working the soil always at the same depth or with an inappropriate degree of humidity, something that happens with the other types of plows;
* the chisel plow reduces soil erosion because vertical work displaces the waste from the previous harvest much less than the horizontal, and then the wind and water cannot affect it with the same magnitude;
* reduces weeds precisely because of not inverting the soil;
* improves the structure of ground and its properties, so that it stays longer and yields much more.