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Casing-Pulling Apparatus.

Description: Patent for an apparatus to more easily and more economically remove well-casings from the ground when an oil well is no longer in use.
Date: November 29, 1921
Creator: Wilson, John Hart
Partner: UNT Libraries Government Documents Department

Counter.

Description: Patent for improvements to store counters that can be easily constructed in whatever form fits the user.
Date: July 18, 1922
Creator: Jones, Laurence E.
Partner: UNT Libraries Government Documents Department

Boring and Threading Tool.

Description: Patent for an inexpensive, efficient boring and threading tool that "will enable a smooth and even surface to be produced with a minimum of skill on the part of the operator" (lines 18-21).
Date: June 21, 1921
Creator: Wells, Daniel Doolittle
Partner: UNT Libraries Government Documents Department

Valve.

Description: Patent for a safety valve that closes a conduit when a change in pressure occurs that shuts off the supply of fluid (or gas) until the valve is manually reset.
Date: May 26, 1914
Creator: Ruffner, Earl S.
Partner: UNT Libraries Government Documents Department

Calk Attachment For Horseshoes

Description: Patent for new and useful improvements in calk attachments for horseshoes. The objective is to provide detachable means applicable to the conventional types of shoe without any modifications.
Date: March 29, 1921
Creator: Douglas, John Davies
Partner: UNT Libraries Government Documents Department

Well-Drill Wrench.

Description: Patent for a well drill wrench that improves upon William Ellinger's patent 1,327,379, issued January 6, 1920. This improvement eliminates friction between the rotatable and stationary parts of the wrench and ensures that the rotatable part is fully supported during its entire rotation, "as when screwing or unscrewing the drill bit" (lines 109-110).
Date: November 15, 1921
Creator: Ellinger, William H.
Partner: UNT Libraries Government Documents Department

Valve Structure

Description: Patent for valve improvements in controlling the flow of fluids under high pressure.
Date: August 30, 1921
Creator: Anderson, Jalmer
Partner: UNT Libraries Government Documents Department

Well-Drill Wrench.

Description: Patent for a well drill wrench that is easily adjustable for different sized drill chucks. Its designs makes rotating the wrench smoother and less likely to slip off of drill chucks.
Date: November 8, 1921
Creator: Ellinger, William H.
Partner: UNT Libraries Government Documents Department

Pipe Tongs.

Description: Patent for pipe tongs for drilling wells using rotary systems. The tongs are designed to be securely held against the drill stem using a lever, making them simple and economical to manufacture.
Date: June 28, 1921
Creator: Hill, Richard D.
Partner: UNT Libraries Government Documents Department

Water-Motor.

Description: Patent for a more powerful and efficient water motor which is durable and comparatively affordable to manufacture.
Date: August 16, 1921
Creator: Brady, Enoch J.
Partner: UNT Libraries Government Documents Department

Friction Transmission Mechanism.

Description: Patent for improvements toward friction transmission mechanisms. It would eliminate the use of some gears.
Date: March 28, 1921
Creator: McDermott, Henry
Partner: UNT Libraries Government Documents Department

Pump-Plunger

Description: Patent for a pump-plunger, concentrating on advancements in the design, particularly catering to deep well operations and environments with challenging conditions, such as oil and water wells where fluids are mixed with sand, sediment, or debris.
Date: October 18, 1921
Creator: Miller, Frank J.
Partner: UNT Libraries Government Documents Department

Baby Net Frame.

Description: Patent for a frame that can support a baby net and can be collapsed for easy storage. The frame also features components that prevent collapse and provide stability when in use.
Date: June 6, 1922
Creator: Akers, Blessie E.
Partner: UNT Libraries Government Documents Department

Pumping-Jack.

Description: Patent for a pumping jack that has a walking beam of a jack for equalizing the dead weight of the pump, which reduces useless weight on the pumping engine.
Date: unknown
Creator: Scott, Henry T.
Partner: UNT Libraries Government Documents Department

Refrigerator

Description: Patent for a refrigerator made of wood with an inner shell of reinforced concrete and vacuum chamber or metal jacket. "The inner concrete shell is divided into four separate chambers, the former containing ice and the other three being adapted to contain food." (lines 61-64)
Date: April 11, 1922
Creator: Knutson, William K.
Partner: UNT Libraries Government Documents Department

Binding Attachment for Baling-Presses.

Description: Patent for bale binding devices that takes wire from spools and binds each bale and then twists the ends of the bale so they hold their shape.
Date: August 3, 1920
Creator: Leavitt, William H.
Partner: UNT Libraries Government Documents Department

Automobile-Signal.

Description: Patent for turn signal improvements with an aim to improve visibility of signal and ease of replacement with the goal of communicating vehicular movement and reducing accidents.
Date: November 15, 1921
Creator: Squier, William Ernest
Partner: UNT Libraries Government Documents Department

Flour-Milling Machinery.

Description: Patent for flour milling machinery with reduced costs of equipment and operation, less required space, and improved quality and quantity of flour.
Date: May 10, 1921
Creator: Smith, George T.
Partner: UNT Libraries Government Documents Department

Adding-Machine.

Description: Patent for an inexpensive, simple, easily operated, and improved registering machine that is meant to add numbers without mistakes. It uses revoluble number wheels and a spring-returned shaft among other materials.
Date: March 21, 1893
Creator: Brooks, Augustus J.
Partner: UNT Libraries Government Documents Department

Adjustable Handle-Bar for Bicycles.

Description: Patent for adjustable handle bar for bicycles, including illustrations.
Date: June 29, 1897
Creator: Winfrey, Edgar, M.
Partner: UNT Libraries Government Documents Department

Crossing-Gate.

Description: Patent for improvements to crossing gates through a device that helps facilitate the gates' automatic closing and opening position.
Date: September 18, 1917
Creator: Hood, Lemuel L.
Partner: UNT Libraries Government Documents Department

Card Holder

Description: Patent for card holders meant to help better display business cards and other forms of advertisement on surfaces such as windows.
Date: March 4, 1919
Creator: Hill, L. W.
Partner: UNT Libraries Government Documents Department

Apparatus for Destroying Insects

Description: Patent for an apparatus for destroying insects. Illustrations included.
Date: May 23, 1911
Creator: Crow, William M. & Crow, Levi H.
Partner: UNT Libraries Government Documents Department
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