| 摘要 |
<p>A bit (1) for a scabbler comprises pointed tips (2) separated by chisel shaped cutting tips (3) projecting a smaller distance than the pointed tips. The tips are preferably in straight rows ending in pointed tips. The tips may be of tungsten carbide and brazed into position. The pointed tips make indentations into the surface, and the chisel shaped tips then break the intermediate weakened area. The bits are used for abrading hard ground surfaces. </p> |
