Spring harrows.
Spring harrows, similar to the teeth, they loosen and mix the soil at a depth of 5–8 cm. The difference in their operation to tooth harrows is this, that they pull out couch grass runners without tearing them apart. Therefore, they are particularly suitable for working on bad soils. The working elements are teeth made of bent elastic flat bars. The working depth of these tines can be adjusted by changing their position in relation to the skids by means of a manual lever connected with a ratchet with a toothed arch.. Single-field spring harrows are adapted to horse power, while multi-field - for tractor towing