| 摘要 |
PROBLEM TO BE SOLVED: To provide a pencil sharpener capable of sharpening even cores other than a writing tool similar in shape to a pencil and a drawing material, which has conventionally been impossible because sharpening of the cores of a writing tool such as pastel or charcoal and a drawing tool has not been assumed in pencil sharpening/core sharpening.SOLUTION: A pencil sharpener has a shape enabling sharpening of the core of a writing tool/drawing material which has been impossible in conventional pencil sharpening irrespective of core thicknesses of a writing tool such as a pencil, charcoal, pastel or graphite and a drawing material. Powders which are sharpening chips can be used to constitute a drawing material. Cylindrical holes are respectively formed at a piece of roll type papersand or short sides of the papersand, and rod-like cylinders are inserted through the holes, and thus the cores of the writing tool such as a pencil, charcoal, pastel or graphite and the drawing material can be sharpened, which has been impossible in conventional pencil sharpening.SELECTED DRAWING: Figure 1 |
