UNT Libraries Government Documents Department - 7 Matching Results

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Percolator.

Description: Patent for a percolator that has a storage tank where the water may be heated and stored for later use to make coffee. The device also features a cylinder, where ground coffee is placed, that can be removed for easy cleaning.
Date: June 13, 1916
Creator: Duke, Holmes
Item Type: Refine your search to only Patent

Portable Press for Hay

Description: Patent for a portable press for hay. "My invention relates to portable hay and other presses, and has for its objects, first, an improved power-transmission and lever device for pressing or forcing the hay or other material into th box or frame of the press" (line 8-13). Illustration included.
Date: October 13, 1903
Creator: McKean, Frank
Item Type: Refine your search to only Patent

Power-Hammer.

Description: Patent for a power hammer that can utilize any power source and only needs one person to operate it. The design also uses less parts, making it more affordable.
Date: December 13, 1921
Creator: Karlson, Eric Fritjof
Item Type: Refine your search to only Patent

Viscoscometer.

Description: Patent for a device that accurately determines the viscosity of different liquids, particularly oils, and is able to be kept at a uniform temperature.
Date: June 13, 1916
Creator: Lorenz, Charles O.
Item Type: Refine your search to only Patent
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