The Fountain Pen Patent Archive

The instruments that put ink under pressure

Adjustable feed

Patent drawing of a hard rubber fountain pen holder shown in full longitudinal section with labeled internal parts including the nib, nozzle, wedge key, ink ducts, condensing chamber, and cap, alongside smaller cross-sectional and detail figures of the mechanism.FOUNTAIN PEN-HOLDER.William W. Stewart · December 21, 1886Patent drawing of a fountain pen showing a long central section labeled A with a detailed nib and feed assembly at the tip, plus smaller cross-section and modification diagrams labeled Figs. 2 through 11.FOUNTAIN-PEN.Laforest A. Shattuck · September 25, 1888