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, 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 an ink chamber surrounded by the slits and projections, 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 of said pen nib holder sleeve to strike against a back end face of said pen nib;
• ink introducing cores made of fibers material and extending to the ink chamber, passing through the guide hole, and the pen nib housing hole;
• a penholder for housing an assembly of the pen nib, pen nib holder sleeve and push sleeve;
• and
• an ink holding member;
• wherein grooves are formed on the inner face of the pen nib housing hole in the pen nib holder sleeve to fix and hold the pen nib not to move in its rotating direction and one or more holder pieces each having a passage therein through which one of said ink introducing cores is passed is arranged integral to the front end of said pen nib holder sleeve.