| 摘要 |
<p>A guard and sharpener construction for a rotary cutting machine having a base, a circular knife mounted on the base, a motor for driving the circular knife a standard for mounting the motor above the base, an elongated slotted rod slidable to cover a segment on the leading edge of the circular knife, a pair of sheet-like guard members mounted on the mounting arms for the sharpener wheels, the guard members covering opposite sides of the knife above the segment, a pivotal shaft and associated mechanism for mounting the arms for movement between a sharpening and a nonsharpening position, with the rod member, the sheet-like guards and the sharpener arms being so oriented relative to each other so as to permit the sharpener to be used in all positions of the rod-like guard member, and a keyway and set-screw indexing structure for mounting the arms on the pivotable shaft.</p> |
