UNT Libraries Government Documents Department - 4 Matching Results

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Refrigerator.

Description: Patent for a new and improved refrigerator. This design is "for use without ice, the cooling effect being secured by the evaporation of water. Consequently the apparatus will be most effective when exposed to a current of air. The apparatus is formed with a suitable framing, having its sides closed in with wire-gauze to permit the free circulation of air, and at the same time exclude insects and the like. At one side a door affords access to the interior of the refrigerator, and legs serve to h… more
Date: August 26, 1890
Creator: Laman, Nancy A.
Item Type: Refine your search to only Patent

Cotton Gin.

Description: Patent for a new and improved cotton gin. This design "is to provide certain means whereby the breast and guard can be readily and quickly moved and held out of their normal position for the purpose of clearing or freeing the cotton-roll from the saws, and preventing injury to the operator by said saws" (lines 7-13).
Date: June 26, 1883
Creator: Rogan, David Smith
Item Type: Refine your search to only Patent

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
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