| 摘要 |
A mechanism for sharpening knife blades, including a portable case that forms an elongated trough for supporting (positioning) a rectangular cutting stone. Outwardly flaring support surfaces are formed on the case at upper edges of the trough. During a sharpening operation the knife blade is held flatwise against one of the support surfaces with the edge of the blade in contact with the upper surface of the cutting stone. The blade is moved back and forth so that the blade edge has grinding frictional contact with the stone surface. The angular tilt of the support surface relative to the plane of the stone upper surface determines the angle formed on the knife blade by the sharpening process.
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