Multiangular pen

A multiangular pen comprising

• a pen nib having a trunk extending in the longitudinal direction of the pen nib, plural projections radially and outwardly projected from the trunk with a certain angular interval interposed between the projections, a channel extending along the center axis of said trunk, plural slits each extending downward from a tip of the trunk between the projections, plural clearances each extending along the tip portion of the projection, and made continuous from said channel, said slits and projections being alternately arranged and the tip portion of said pen nib being formed as a pyramid;
• a pen nib holder sleeve having a pen nib housing hole extending along its center axis to house the pen nib and also having a tapered portion whose diameter becomes smaller and smaller as it comes nearer and nearer a front end thereof;
• a push sleeve having a guide hole extending in its longitudinal direction and communicating with the pen nib housing hole, said push sleeve being fitted into the pen nib housing hole at a back end side of said pen nib holder sleeve to strike against a back end face of said pen nib;
• an ink introducing core made of fibers material or porous resin material and extending to the ink chamber, passing through the guide hole, the pen nib housing hole and the channel in the pen nib;
• a penholder for housing an assembly of the pen nib, pen nib holder sleeve and push sleeve;
• and
• an ink holding member;
• wherein a stopper section is provided on the inner face of the pen nib housing hole in said pen nib holder sleeve to fix and hold the pen nib not to move in its rotating direction and said pen nib is restricted by the tapered portion of said pen nib holder sleeve not to move in the forward direction.