| 摘要 |
A stump-extracting tool preferably mounted on an articulated arm such as the boom of a power shovel has a flat spur (1) of substantial length having a cutting edge (2) at one end and a cutter-blade (5) in a plane transverse to the plane of the spur (1). The cutter-blade (5) comprises at least one cutting edge on one side adjacent to the cutting edge (2) of the spur (1) and the cutting edge of the cutter-blade (5) comprises a series of stair-step teeth (6) having a cutting edge (7) parallel to a plane (P) which is substantially perpendicular to the plane of the spur.
|
