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The Fountain Pen Patent Archive

The instruments that put ink under pressure

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Slide-actuated valve

Patent drawing showing a fountain pen labeled 'READY WRITER' in full assembled view, plus cross-sections and detail views of the internal rod, conical valves, spring, and slide mechanism inside the hollow pen holder.

IMPROVEMENT IN FOUNTAIN PEN-HOLDERSCharles Cleveland · June 1, 1852

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