The Fountain Pen Patent Archive

The instruments that put ink under pressure

Air-passage design

Patent drawing of a fountain pen showing a long hollow barrel in cross-section (Fig.1) with an internal wire skeleton and feeder-bar, plus four smaller side views (Figs. 3-5) of alternate wire-strand skeleton configurations converging into a bow near the nib, and a round cross-section (Fig.2) showing the nested tube and skeleton arrangement.FOUNTAIN-PENWilliam W. Stewart · August 29, 1899