Destoner

Side view of a destoner

A destoner is a machine that removes stones and clods from soil ridges and moves them to between the drills so that the drills are free from stones. It also helps when harvesting in wet conditions as the harvester can drive on a row of stones which helps improve traction.

It removes the stones by a series of webs (between two and five webs). The stones stay on the web and the clay falls through it. The stones travel thrugh the machine and the bigger stones fall into a boulder box and the smaller stones fall onto a cross converer and in turn fall into a trench . On the next pass the tractor tramps these stones down.

Destoner are usually fitted with steerable wheels which makes them more manageable at headlands. Some are fitted with hydraulic levelling.