| 摘要 |
<p>A marking tool is provided for transferring regularly spaced deposits of a marking medium, such as chalk, to a surface to be marked. The marking tool comprises: a dispenser body 1; a reel 2 wound with an inelastic line 3; regularly spaced marker carriers 4; and a reservoir 6 for the marking medium. When the line 3 is unwound from the reel 2 to extend from the dispenser body 1, the marking mediÂum is transferred from the reservoir 6 to the marker carriers 4. A resiliently-mounted clamping device 9-15 enÂgages and clamps the line 3 to prevent further unwinding thereof from the reel. The extended line held taut against a surface to be marked is deflected and then released causing the marker carriers 4 to snap against the surface thereby depositing the marking medium. The line 3 may be a wire such as a twisted strand wire. The marker carriers 4 may comprise bodies of absorbent fibres secured in or on the line 3. The reel 2 may be provided with a rewind mechanism. The clamping device may be carried on elastic members mounted within the body 1.</p> |
