| 摘要 |
PURPOSE:To use a lead sold on the market, without enlarging a full length of a writing utensil of a two-head type wherein one head is made a direct liquid type writing body and the other a mechanical pencil, by making it possible to hold doubly an ink chamber and the mechanical pencil by making an ink tank have a bag-shaped inner tube part projecting into the ink chamber. CONSTITUTION:In a so-called direct liquid type writing utensil having an ink task 3 storing ink directly in the rear part of a holder tube l and having a pen tip 2 at the fore end of the holder tube l, the rear part of the holder tube 1 is fitted in an outer holder tube 11 so that it is movable forward and backward. Besides, a bag-shaped inner tube part 5 is formed toward the front of an ink chamber 4 from the rear end of the ink tank 3 and a lead case 17b is held in the inner hole 6 of the inner tube part 5. In a state wherein the rear end of the lead case 17b comes virtually into contact with the front-end bottom part of the inner tube part 5, a mechanism pencil 16 is fixed to the front of the outer holder tube 11. Moreover, a cap 7 is fastened to the front of the holder tube so that it is movable forward and backward in relation to the outer holder tube 11. For this convenient writing utensil of the direct liquid type, a lead which can be obtained easily on the market can be used. |
