| 摘要 |
The present invention relates generally to brush cutting heads, and more specifically, to a cutting tooth with dual cutting edges for a brush cutting head. The cutting tooth for attachment to a mounting block includes a longitudinal body provided with a leading face; a trailing face; and a pair of opposed, first and second cutting portions carried at either end of the longitudinal body. The leading face has a projection disposed thereon to reinforce the longitudinal body. The projection has a leading projection face. The trailing face has defined therein at a location intermediate the ends of the longitudinal body at least one threaded, blind bore. The at least one blind bore extending substantially into the projection but stopping short of the leading projection face. The at least one blind bore is configured to receive therein a threaded bolt for securing the cutting tooth to the mounting block. The first cutting portion has a tapering profile that terminates in a first cutting edge. The first cutting edge has a first angle of attack relative to a first plane parallel to the midplane M. The first angle of attack lies between 20 degrees and 75 degrees. The second cutting portion has a tapering profile that terminates in a second cutting edge. The second cutting edge has a second angle of attack relative to a second plane parallel to the midplane M. The second angle of attack lies between 20 degrees and 75 degrees. When the cutting tooth is secured to the mounting block one of the first and second cutting portions is in an operative position and the other of the first and second cutting portions is in an inoperative position.
|
