The Fountain Pen Patent Archive

The instruments that put ink under pressure

Eyedropper filler

Patent drawing showing four views of a 19th-century fountain pen holder: an assembled pen with nib and barrel labeled A, E, and I; a sectional cutaway showing internal tubes D, F, and G; an exploded view of separated parts B, C, E, F, G, H; and the pen with its protective cover I in place.FOUNTAIN-PENGeo. W. White · September 4, 1855Patent drawing showing a disassembled 19th-century fountain pen with labeled parts including barrel sections, quill conductor, nib, and small hardware components like screws and disks.IMPROVEMENT IN FOUNTAIN-PENSCharles Adolphus Rosefield · May 12, 1857Patent drawing of a 19th-century fountain pen in longitudinal section showing the nib, air-tube, ink reservoir, and vent cap, with side cross-section views of the adjustable tube components.Improvement in Fountain-PensAlonzo T. Cross · November 19, 1878Patent drawing of a 19th-century fountain pen shown in cross-section (Fig. I) with labeled parts a, b, c, d, i, j, k, l, m, an enlarged detail of the plug and tip (Fig. II), and a cross-sectional end view of the collar (Fig. 3).FOUNTAIN-PEN.Noyes F. Palmer · March 9, 1886Patent drawing showing two long fountain pen assemblies with labeled parts (barrel A, tube B, cap D, feeder F, pen E) alongside small cross-sectional diagrams of the feeder bar showing spiral and straight ink grooves.FOUNTAIN-PEN.Theodore Frederick Bourne · February 5, 1889Patent drawing showing a hard rubber fountain pen holder in longitudinal section with a removable pen-holding plug, bifurcated pen nib, bent ink-feeder stem, and a separate screw cap, alongside detailed cross-sections and end views of the plug and feeder mechanism.FOUNTAIN-PEN.Dewitt C. Demarest · July 30, 1889Patent drawing of a slender cylindrical fountain pen shown in full side view and in cutaway cross-sections, revealing an internal reservoir, a grooved tip passage, a feed-bar, a small cylindrical valve, and a coiled pen-holding spring near the nib.FOUNTAIN-PEN.Morris W. Moore · September 2, 1890Patent drawing of a hard rubber fountain pen shown in full diagonal view with a cutaway section revealing the internal feed-bar, pen-point, and plug-valve, alongside smaller detail views of the triangular feed-bar cross-sections and the pen-point's locking projection.FOUNTAIN-PEN.William H. O'Keefe · October 1, 1895Patent drawing showing eight labeled cross-sectional and detail views of a fountain pen, including the assembled holder, nib, feeder-bar with angular bore, and a small rubber ball on a wire used to regulate ink flow.FOUNTAIN-PEN.William W. Stewart · August 24, 1897Patent drawing of a hard rubber fountain pen showing the assembled pen with nib in Figure 1, a cross-sectional side view revealing the internal feeder-bar and diamond-shaped obstruction plug in Figure 2, a circular cross-section in Figure 3, and two views of a modified pyramidal obstruction plug with a hook-like finger extension in Figures 4 and 5.FOUNTAIN-PEN.William W. Stewart · August 24, 1897Patent drawing of a fountain pen showing a full perspective view with numbered parts, a cross-section revealing the glass ink reservoir and rubber bulb cap, and a detailed view of the small adjustable air-inlet plug valve.FOUNTAIN-PEN.Olof Winkler · June 14, 1898