| 摘要 |
PCT No. PCT/AU95/00245 Sec. 371 Date Oct. 28, 1996 Sec. 102(e) Date Oct. 28, 1996 PCT Filed Apr. 28, 1995 PCT Pub. No. WO95/29789 PCT Pub. Date Nov. 9, 1995A sharpening device (2) for sharpening the teeth (131) of a rotary blade (130) is described in which the device (2) comprises a substantially planar base (4) to which is pivotally attached a back plate (10) containing a number of components or subassemblies. One subassembly is for retaining rotary blades (130) in such a manner as to allow rotation of the blades (130) so that each tooth (131) of the blade (130) can be sharpened in turn. Another subassembly attached to back plate (10) is a guiding subassembly which is selectively angularly inclinable to the base (4) for being accurately located relative to a rotary blade (130) so that movement of a round file (75) linearly between rollers (74) attached to roller block (60) which in turn is angularly inclined to adjustment plate (34) effects sharpening of teeth (131).
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