| 摘要 |
PROBLEM TO BE SOLVED: To obtain a multiple type writing tool with which writing and erasing can be done easily by making at least one writing body out of writing bodies house a coloring sharp lead other than black and arranging an eraser holder movably back and forth in a back barrel. SOLUTION: When a back barrel 4 is rotated in one direction with respect to a tip barrel 3 or an internal barrel 1, a notch 15 provided at a tip of a cam slant face 14 of a cylindrical cam 5 engages with a sliding piece 6 of a mechanical pencil writing body 7 having a coloring sharp lead other than black which can be easily erased by one eraser housed therein, and its writing tip protrudes from a tip hole at the tip barrel. In this state, when the cylindrical cam 5 is moved with barrel by knocking a back end of a top crown 37, the movement is transmitted to the sliding piece 6, a proceeding pipe 23, and the mechanical pencil writing body 7, so that the lead is projected. When the top crown 37 is rotated right and left with respect to the front of the back barrel 4, an eraser holder 42 moves back and forth, so that an eraser 47 comes up and down from a back end hole 39. |
