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in subjects: "Wells"  
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Well-Tubing Catcher

Description: Patent for an improved well tubing catcher, which "provides an equal and positive bearing surface for the gripper slips or dogs in all their adjusted positions" (lines 16-18), including illustrations.
Date: April 12, 1921
Creator: Wilson, Robert A.
Partner: UNT Libraries Government Documents Department

Well-Screen.

Description: Patent for a "well screen in which a maximum screening area is obtained without weakening the frame" (lines 11-13) including instructions and illustrations.
Date: July 23, 1918
Creator: Layne, Mahlon E.
Partner: UNT Libraries Government Documents Department

Well-Strainer

Description: Patent for a well-strainer, specifically to "a cap or plug applied directly to a cap or plug applied directly to an aperture in a pipe-section used for wells." (lines 9-12)
Date: August 21, 1906
Creator: McEvoy, J. H.
Partner: UNT Libraries Government Documents Department

Well-Cleaner.

Description: This invention relates to an improved well cleaner, and has for its principal object to provide a device of this kind adapted to be positioned in a well casing to direct a volume of air into the casing for cleaning the valves and straining elements thereof. A further object of the invention is to provide an automatic means for sealing the cleaner for holding the fluid within the well casing, against back pressure, during the cleaning operation. (Lines 8-19)
Date: October 18, 1919
Creator: Sargent, Lemuel H.
Partner: UNT Libraries Government Documents Department

Spear

Description: Patent for a spear that is used to help withdraw or remove pipes that may get stuck in wellbores.
Date: April 20, 1920
Creator: Gray, Ellsworth
Partner: UNT Libraries Government Documents Department

Pump.

Description: Patent for a pump for deep wells with a "specially constructed piston capable of a powerful working stroke and which will secure at all times a full volume of liquid at each stroke of the pumping rod." (line 25) including instructions and illustrations.
Date: July 6, 1920
Creator: Humason, Granville Allison
Partner: UNT Libraries Government Documents Department

Rotary Boring-Drill.

Description: Patent for "new and useful Improvements in Rotary Boring-Drills...of the collapsible type." (lines 5-12) including instructions and illustrations.
Date: December 30, 1919
Creator: Humason, Granville A.
Partner: UNT Libraries Government Documents Department

Device for Recovering Tools from Wells.

Description: Patent for a device to lift and recover tools, such as drill-bits, that have been dropped or lost in wells. The device features two prongs that may be engaged to grip or secure in a "biting hold" (line 50) various objects, illustrations included.
Date: September 9, 1919
Creator: Scott, Augustus B.
Partner: UNT Libraries Government Documents Department

Device For Forcing Water Out Of Wells.

Description: Patent for new and useful improvements in devices for forcing water out of wells, including instructions and illustrations.
Date: November 21, 1899
Creator: Baca, August
Partner: UNT Libraries Government Documents Department

Apparatus for Hoisting Liquids from Wells.

Description: Patent for an “apparatus for raising liquid from wells by means of a compressed fluid, such as air or other vapors or gas“ (lines 9-12). The apparatus leaves liquid from the well under normal pressure during hoisting or pumping, and allows for varying amounts of liquid to be extracted.
Date: October 28, 1913
Creator: McCall, Duncan D.
Partner: UNT Libraries Government Documents Department
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