| 摘要 |
A knife, for a flail-mower, comprises a flat elongated member bent transversely intermediately of its ends to provide a shank p and a cutting portion joined at a corner having inner and outer sides, a reinforcing rib being formed integrally, by upstanding, across the inner side of the corner. All three sides of the cutting portion of the knife are sharpened so that the knives, which are mounted back-to-back in pairs during use, can be reversed to bring the opposite lateral edges into the leading position. |
