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Filter and Water Purifier.

Description: Patent for a new and improved water filter. This design consists in "[t]he combination of a water-pump having upwardly-opening valves, an air-pump having downwardly-opening valves, and two perforated cylinders surrounding the pump-tubes and provided with a packing of filtering material, the water-pump tube opening into the inner cylinder, and the pump-tube passing entirely through both heads of the same" (lines 61-68).
Date: November 26, 1889
Creator: Stiles, Frederick
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Aeroplane

Description: Patent for an aeroplane. This invention does not use any mechanism to maintain the planes equilibrium. Illustration included.
Date: November 5, 1912
Creator: Goebel, Alois
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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