Hudson Barometer Inkstand

Thomas S. Hudson patented this inkstand on June 4, 1861, with a reissue given on November 15, 1864. The large glass dome (referred to as “an air and ink cistern”) held the ink. The glass dome has a neck (“hollow arm”) that becomes the opening (aperture / font) for dipping into the ink. The glass and neck are all one piece. The “shut and cut” method of molding was used in making this glass piece.

The brass base covers a mass of plaster-of-paris or cement, holding the glass piece in place. The opening (mouth) at the end of the glass neck is covered by a hinged metal (pewter) cap assembly.

A label affixed to the bottom of the inkstand gives instructions for filling it with ink with a diagram. One fills the inkstand by pouring the ink into the metal dispensing end. Once filled, the ink will remain in the large glass dome (fountain) at a level above the mouth of the neck due to atmospheric pressure. The label boasts “Years of use cannot injure  its action, while the saving in consumption of ink will soon repay its cost”, explaining that by “self-action”, the dipping place is constantly kept filled with clear ink. The label also warns consumers to watch out for counterfeits.

The original inkstand did not have a pen holder. Subsequent versions had a metal pen holder, either a square-shaped holder with an Oriental style, or a floral gilt pen holder. Examples of each are shown.