The Fountain Pen Patent Archive

The instruments that put ink under pressure

Early 20th century pen

Technical patent drawing showing a fountain pen barrel in longitudinal section with a pivoted lever, presser bar, and ink sack, along with detail views of the lever's frame and locking mechanism.PRESSER-BAR-ACTUATING LEVER FOR SELF-FILLING FOUNTAIN-PENS.William I. Ferris and Edwin F. Britten, Jr. · September 5, 1916