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The Fountain Pen Patent Archive

The instruments that put ink under pressure

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Tongue and slot feeder

Patent drawing showing a tapered fountain penholder in side and sectional views, with a detailed close-up of the tubular feeder featuring a slotted tongue and a cross-section of the pen tip assembly.

PENHOLDER.James Martin, Joseph McCarty, Thomas Craft · March 17, 1896

United States patent drawings and specifications are works of the U.S. government and are in the public domain — they were never copyrighted. Download them, print them, frame them. Our commentary and descriptions are © 2026 The Fountain Pen Patent Archive.

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