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Auger.

Description: Patent for a new and improved auger. This design consists in "[t]he combination of a shank provided with a conveying-screw and the cutters at the lower end of the screw, the sides of the cutters being extended beyond a vertical line drawn across the edges of the screw, and a tube or casing enclosing the screw and connected at its lower end with the cutters, said tube being of less diameter than the cutters and arranged within the outer sides thereof" (lines 56-64).
Date: August 23, 1887
Creator: Tevebaugh, Henry Clay
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Casing Spear

Description: Patent for a casing spear, "to remove casing within a well or removing a tool which may be dropped within the casing," with accompanying illustrations of the patent.
Date: October 23, 1917
Creator: Wagner, Warren
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Well Bucket.

Description: Patent for a new and improved well-bucket. This design consists in "[t]he combination of the upper bucket and the lower external bucket, the former having a central vertical tube adapted to receive the rod for operating the valve of the lower bucket, and the spring arranged around the said rod" (lines 5-10).
Date: June 23, 1885
Creator: Arnold, James S.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Unscrewing Device for Pipe-Joints.

Description: Patent for an unscrewing device for pipe-joints, in the event that the drill stem gets stuck while drilling wells. This invention allows the user to unscrew "the joints of the drill stem" and withdraw "the same without the use of the left hand threaded string of pipe" (lines 35-38).
Date: March 23, 1920
Creator: Edwards, Charles R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Pipe-Clamp.

Description: Patent for a pipe clamp for drawing well casings out of wells that can be used on different size pipes and grips harder as resistance increases.
Date: July 23, 1907
Creator: Benedict, George Spencer
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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