Nib holder construction for writing implements
AssigneeOgawa Chemical Industries, Ltd.
InventorMasahiko Nagai
Life of this patent
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Abstract
A nib holder for a fine molded nib in a writing instrument is disclosed. The nib holder has an internal passageway into which the nib may be inserted and held by an abrasive ring or by projections, the nib being held without substantial deformation thereof. The nib holder includes a screw threaded portion which cooperates with mating screw threads on the casing of the writing implement. The nib holder may be screwed into the casing until the end of the nib contacts a fixed ink conducting core. Therefore, as the nib holder is screwed into the casing, the nib is forced out of the passage in the holder for compensating for wear of the nib. A cooperating prong and detent on the casing and nib holder control the rotation of the nib holder with respect to the casing.
Claims4
In a writing implement having a cylindrical casing including an ink storing body, an ink passage having a rigid fixed absorbent ink conducting core therein, and a thin nib, a nib holder comprising:
- a holder body having two ends and a passage in said holder body, said passage in said holder body extending between said ends, said passage in said holder body adapted to receive said nib;
- at least one nib holding projection in said passage in said holder body, said at least one nib holding projection extending into said passage in said holder body by a distance sufficient that, when a nib is in said passage in said holder body, said nib is of sufficient rigidity to be moved yet held without substantial deformation by said at least one nib holding projection such that relative movement between said nib and nib holder is permitted;
- and
- means on at least one of said cylindrical casing and one end of said holder body for engaging said one end with said cylindrical casing, said means for engagement permitting adjustment of the position of said holder body with respect to the length of said cylindrical casing, said means for engagement being of such a length in the direction of adjustment so as to provide secure engagement between said cylindrical casing and said holder body in at least two adjustment positions;
- wherein said nib contacts said fixed ink conducting core when said holder body is engaged with said cylindrical casing and said core is sufficiently rigid to overcome the grip of said at least one projection on said nib, whereby the adjustment of said holder body can cause said nib to move relative to said holder body due to said core overcoming the grip of said at least one projection.
Dependencies are inferred from the claim text.