| 摘要 |
A completely outside sharpenable saw chain of the chisel type is sharpened by an attachment securable to the nose end of a saw bar around which the saw chain passes, the attachment carrying a flexible strip of abrasive material held against the saw chain top plate portions, as a result of flexure of, the strip, to sharpen the top plate portions. The attachment further includes a pair of side elements having abrasive surfaces spring biased against the saw chain side cutter portions to sharpen these. |
