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Paracentesis Needle or Trocar

Description: Patent for a needle with the purpose of injecting fluids or extracting excess fluids from the body. Includes illustrations to demonstrate the object of the patent.
Date: December 4, 1917
Creator: Hill, Phillip
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Gas-Compressing Pump.

Description: Patent for a gas-compressing pump used in refrigeration and ice making. "The object of [the] invention is to reduce the height of a vertical machine, to facilitate access to the parts and relieve the foundation of strains; to reduce to a minimum the angularity of the connecting rod during the latter part of the stroke, and to improve various details of construction" (lines 19-25).
Date: December 4, 1894
Creator: Farnsworth, Thomas
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Acetylene-Gas Apparatus.

Description: Patent for machines that generate acetylene gas for a "simple and comparatively inexpensive construction, in which the gas is thoroughly washed before entering the service-pipe and in which the water-supply to the generator is controlled by the gas pressure and the carbid kept at all times cooled by surrounding water" (lines 11-17).
Date: December 4, 1900
Creator: McGoldrick, William Hamilton
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Gasoline and Oil Renovator

Description: Patent for a device that can take the impurities from gasoline and oil, thus making them reusable. Development and use are within text; includes illustrations to demonstrate the object of the patent.
Date: December 4, 1917
Creator: Caen, George
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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