| 摘要 |
PURPOSE: An automatic pencil designed to use up a pencil lead without any remainder is provided to prevent undesirable waste of a pencil lead. CONSTITUTION: An automatic pencil designed to use up a pencil lead(1) comprises a large guide pipe(10) formed at the end of the sharp pencil nib and a rubber ring(9) supporting the pencil lead which is fixed in the guide pipe in order to tightly hold the pencil lead until the pencil lead is used up and to receive the projecting pressure of the following pencil lead.
|
