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Spoke-Tightener.

Description: Patent for "a new and useful Spoke-Tightener" (lines 5-6) and adjuster, including illustration.
Date: August 5, 1902
Creator: La Bauve, Valcoure J.
Partner: UNT Libraries Government Documents Department

Pipe-Pulling Device.

Description: Patent for a pipe pulling device designed for wells. The device will automatically grip and hold pipe at any point of elevation.
Date: August 5, 1919
Creator: Thrift, Homer C.
Partner: UNT Libraries Government Documents Department

Improvement in Blow-Off Cocks.

Description: Patent for improvement in blow-off cocks used in locomotives and steam boilers, including an illustration.
Date: August 5, 1879
Creator: Harrop, Benjamin B.
Partner: UNT Libraries Government Documents Department

Carpenter's Implement.

Description: Patent for a carpenter's implement designed to be easily carried within one's pocket, with illustrations.
Date: August 5, 1919
Creator: Smith, Evander A.
Partner: UNT Libraries Government Documents Department

Apparatus for Treating Hydrocarbons.

Description: Patent for an improved apparatus for treating hydrocarbons. This apparatus is for treating comparatively heavy petroleum and other hydrocarbon oils and their distillates and derivatives, in order to produce from such heavy oils a large yield of gasoline or other light, easily volatile liquids. This apparatus will be a safe and efficient way to produce large yield of gasoline and light hydrocarbon liquids from heavy oils and will be free from trouble arising from the accumulation of carbon.
Date: August 5, 1919
Creator: Andrews, Benjamin & Averill, Willard C., Jr.
Partner: UNT Libraries Government Documents Department
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