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 Collection: Texas Patents
Improvement in Combined Ventilators and Chimneys

Improvement in Combined Ventilators and Chimneys

Date: July 14, 1874
Creator: Hickley, Walter R & Dibrell, Charles J
Description: Patent for improvement in Combined Ventilators and Chimneys. This object is to be used with the brick chimney on top of the roof to provide air circulation. It consists of an iron-lined inner flue secured within an outer casing with suitable bottom and top perforation for establishing air current around the flue.
Contributing Partner: UNT Libraries Government Documents Department
Improvement in Combined Wrench and Saw-Set.

Improvement in Combined Wrench and Saw-Set.

Date: January 22, 1878
Creator: Backer, Jacob
Description: Patent for improvements in the "combination of a wrench with a saw-setting device attached to the sliding jaw thereof" (lines 17-19). Includes instructions and illustrations.
Contributing Partner: UNT Libraries Government Documents Department
Improvement in Combining Bitumen and Clay.

Improvement in Combining Bitumen and Clay.

Date: September 24, 1872
Creator: Lea, Pryor
Description: Patent for a method of combining bitumen, water, and clay for such purposes as plastering.
Contributing Partner: UNT Libraries Government Documents Department
Improvement in Compositions for Filling Teeth.

Improvement in Compositions for Filling Teeth.

Date: February 9, 1875
Creator: Erlenmeyer, Erwin
Description: Patent for a new compound for use as a tooth filling as related to dentistry. Names all of the ingredients forming the compound and lists the necessary proportions of each ingredient.
Contributing Partner: UNT Libraries Government Documents Department
Improvement in Compositions Used as Building Materials.

Improvement in Compositions Used as Building Materials.

Date: October 12, 1858
Creator: Raymond, N. C.
Description: Patent for making a new kind of building and fencing materials by using farm waste and inorganic settable ingredients such as quick-lime, clay or soil. No illustration.
Contributing Partner: UNT Libraries Government Documents Department
Improvement in Compound Engines.

Improvement in Compound Engines.

Date: February 16, 1875
Creator: Bell, Jackson W. ; Bell, J. W. ; Jackson W. Bell, of McKinney, Texas.
Description: Patent for "a series of engines for working the steam over by exhausting it from the first into the second, and so on, for utilizing the pressure lost when steam is exhausted from a single engine into the air..." (lines 7-11) including instructions and illustrations.
Contributing Partner: UNT Libraries Government Documents Department
Improvement in Compound Tools.

Improvement in Compound Tools.

Date: December 5, 1876
Creator: Mayfield, Samuel B.
Description: Improvement in Kitchen-Utensil for lifting pots, kettles, plates, and as a means for holding a device for mangling meats.
Contributing Partner: UNT Libraries Government Documents Department
Improvement in Compounds for Destroying Caterpillars.

Improvement in Compounds for Destroying Caterpillars.

Date: January 14, 1873
Creator: Whisenant, Green F.
Description: Patent for an insecticide compound that combines Paris green, flour, and lime, which allows the poison, arsenic, to better adhere to cotton plants. Includes instructions.
Contributing Partner: UNT Libraries Government Documents Department
Improvement in Compounds for Destroying Insects on Plants.

Improvement in Compounds for Destroying Insects on Plants.

Date: May 26, 1874
Creator: Royall, William B.
Description: Patent for a “combination of flour and cotton-seed meal with paris green, for the destruction of cotton-worms or caterpillars, and other pestiferous insects” (lines 47-50).
Contributing Partner: UNT Libraries Government Documents Department
Improvement in Compounds for Destroying Worms in Cotton-Plants.

Improvement in Compounds for Destroying Worms in Cotton-Plants.

Date: January 2, 1871
Creator: Mitchell, Thomas W. & Briscoe, Robert P.
Description: Patent for using a solution of water and arsenic for killing cotton pests.
Contributing Partner: UNT Libraries Government Documents Department