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The Fountain Pen Patent Archive

The instruments that put ink under pressure

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Eyedropper era pen

Patent drawing showing a longitudinal cross-section of a fountain pen with a valve rod running through a tube, alongside three separate detail views of pen-point tips with brush tufts inside tapered nib holders.

IMPROVEMENT IN FOUNTAIN-PENSJohn Goodyear · July 15, 1873

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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