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The Fountain Pen Patent Archive

The instruments that put ink under pressure

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Mackinnon-type pen

Patent drawing of a stylographic fountain pen showing a long cylindrical barrel with a screw-on cap, an internal needle-valve point section, and enlarged cross-sectional views of the air-duct and valve components labeled A through H.

Stylographic Fountain-Pen.Alexander M. Sutherland and Francis C. Brown · March 22, 1881

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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