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The Fountain Pen Patent Archive

The instruments that put ink under pressure

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Vulcanized rubber diaphragm

Patent drawing of a slender cylindrical stylographic pen shown whole and in cross-section, revealing an internal needle, agitator plates, and a slit rubber disk covering the ink reservoir outlet near the tapered writing tip.

STYLOGRAPHIC PENEdward B. Nimmo · September 4, 1883

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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