The Fountain Pen Patent Archive

The instruments that put ink under pressure

Push-button filler

Patent drawing sheet showing a slender fountain pen in full profile, a cutaway sectional view revealing an internal sliding frame with needle valve and threaded gland-screw packing box, a close-up of the finger button and diaphragm, a top view of the concentric packing components, and a small sketch of a hand holding the pen while writing.FOUNTAIN-PENFedor Juliusberger · December 8, 1885