Fountain pen with improved ink flow control

Claim 1

In a fountain pen comprising an elongated housing having first end and a second end spaced apart in the elongated direction, the first end of said housing being open and the second end being closed, an elongated feed bar located within said housing and extending into the open first end of said housing toward the second end thereof, said feed bar having a first end and a second end spaced apart in the elongated direction thereof, the first end of said feed bar spaced outwardly from the first end of said housing and the second end of said feed bar located within said housing and spaced from the first and second ends of said housing, the interior of said housing forming an ink reservoir between the second end of said housing and the second end of said feed bar, a writing point projecting outwardly from the first end of said feed bar in the direction away from said housing, means for supplying ink from said ink reservoir to said writing point, at least said first feed bar forming a first passageway for admitting atmospheric air into the ink reservoir for replacing the ink supply from said ink reservoir to said writing point, wherein the improvement comprises that said means for supplying ink comprises an ink feeding member in communication with said writing point, and an elongated flow controlling member extending through said feed bar in the elongated direction thereof and connecting said ink feeding member and said ink reservoir, said ink feeding member having an effective flow cross section therethrough transversely of the elongated direction of said feed far and said flow controlling member having an effective flow section therethrough transverse of the elongated direction of said feed bar with the effective flow section of said flow controlling member being smaller than the effective flow section of said ink feeding member.