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Mining Sulfur.

Description: Patent for extracting sulfur that is being mined from the stratum that has the minerals. A fluid medium, such as air or a heated liquid, is forced into the stratum which assists with the elevation of the liquid mineral. As the minerals come up the heated tubes, the liquefied minerals are sent into vats.
Date: September 8, 1903
Creator: Higgins, Pattillo
Partner: UNT Libraries Government Documents Department

Valve.

Description: Patent for an improvement in the function and use of a valve which gets rid of the wire usually used to raise tank valves. Getting rid of this wire allows for easier drainage.
Date: January 20, 1914
Creator: Axtell, Fred W.
Partner: UNT Libraries Government Documents Department

Recharging-Valve.

Description: Patent for a recharging valve "to permit recharging the auxiliary reservoirs of an automatic air-brake system without involving the release of the brakes." (lines 8-11) including instructions and illustrations.
Date: October 3, 1905
Creator: Williams, Leonard F.
Partner: UNT Libraries Government Documents Department

Gearing for Gin Saw Cleaners

Description: Patent for an improvement on a previous patent relating to a gearing for gin saw cleaners. Development and use are within text; includes illustrations to demonstrate the object of the patent.
Date: December 11, 1917
Creator: Robertson, Osborn B.
Partner: UNT Libraries Government Documents Department

Grapple for Handling Well Pipes or Tubes.

Description: Patent for "a simple and inexpensive device adapted for readily gripping a well pipe or tubing to enable the same to be readily removed from a well or lowered within." (Lines 11-14) Includes instructions and illustrations.
Date: April 13, 1897
Creator: Smith, Thomas McGlothlin
Partner: UNT Libraries Government Documents Department

Adjustable Pipe-Wrench.

Description: Patent for an adjustable pipe wrench "in which the opposing jaws of the wrench are maintained at an angle to each other, so hat they converge toward their extremities, thus enabling a firmer hold to e obtained upon the pope or other article to be gripped by said jaws." (Lines 15-20) Includes instructions and illustrations.
Date: July 20, 1897
Creator: Fauver, Addis E.
Partner: UNT Libraries Government Documents Department

Wire-Fence Tool.

Description: Patent for a device "that will combine in one all the tools actually necessary in building or repairing an ordinary wire fence." (Lines 14-16) Includes instructions and illustrations.
Date: December 1, 1896
Creator: Orton, Lewis W.
Partner: UNT Libraries Government Documents Department

Combination-Wrench.

Description: Patent for a combination wrench that combines a sliding-jaw wrench with a tallow box, hammer, nail claw, horseshoe-pick, plow-paddle, and screwdriver.
Date: December 1, 1885
Creator: McKenzie, Winfield S.
Partner: UNT Libraries Government Documents Department

Wrench.

Description: Patent for "removable-jaw wrenches which can be converted into a pipe or monkey wrench at will." (Lines 12-14) Includes instructions and illustrations.
Date: December 29, 1896
Creator: Ezzell, Fletcher
Partner: UNT Libraries Government Documents Department

Device For Converting Motion.

Description: Patent for a device that converts "regular rotary motion into irregular reciprocating motion" (lines 15-16) which includes instructions and illustrations.
Date: January 26, 1886
Creator: Shellenberger, Samuel L.
Partner: UNT Libraries Government Documents Department

Rotary

Description: Patent for a rotary with the rotary table secured onto the base. Illustrations included.
Date: November 19, 1912
Creator: Decker, Harry R.
Partner: UNT Libraries Government Documents Department
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