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Hinged cap mechanism

Two patent drawings of a conical mucilage bottle fitted with a metal cap and tube through which a small brush can be extended or retracted via a spring and hinged lever cap.

MUCILAGE-BOTTLE.A. M. Olds · June 25, 1867

United States patent drawings and specifications are works of the U.S. government and are in the public domain — they were never copyrighted. Download them, print them, frame them. Our commentary and descriptions are © 2026 The Fountain Pen Patent Archive.

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