Importance

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Abstract

A writing tool provided with a valve construction in which a rotary body embraced in a ball house at the extreme end of a tip is urged forward by means of a coiled spring inserted into the tip to be partly projected, in which state the rotary body comes in contact with an inwardly directed extreme end edge to prevent ink or an applying liquid from flowing out, and when in use, the rotary body partly projecting from the extreme end of the tip presses a paper surface to retreat (immerse) the rotary body against the force of the coiled spring to transfer the ink or the applying liquid onto the paper, wherein the coiled spring is formed to be shorter than the tip. The coiled spring is concentrically supported on the extreme end of a telescope having a liquid conducting portion leading to at least front and rear ends and the telescope is fixedly inserted into the tip, whereby the coiled spring is brought into contact with the rotary body in the state where the coiled spring is concentrically supported within the tip by the telescope.

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First Claim