UNT Libraries Government Documents Department - 32 Matching Results

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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
Item Type: Refine your search to only Patent

Carbureter

Description: Patent for a carburetor. This carburetor is designed to be used with crude oil, and to be easily constructed and operated.
Date: September 6, 1921
Creator: Walker, Sanders
Item Type: Refine your search to only Patent

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
Item Type: Refine your search to only Patent

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.
Item Type: Refine your search to only Patent

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.
Item Type: Refine your search to only Patent

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.
Item Type: Refine your search to only Patent

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.
Item Type: Refine your search to only Patent

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.
Item Type: Refine your search to only Patent

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.
Item Type: Refine your search to only Patent

Liquid-Measuring Device

Description: Patent for a device that determines the amount of liquid (particularly gasoline and oil) that flows from its glass container with the end of facilitating the exchange of goods, including illustrations.
Date: May 25, 1920
Creator: Meredith, John Dewitt
Item Type: Refine your search to only Patent

Spark Plug.

Description: Patent for a spark plug with the capacity to afford an intense spark, prevent leakage of current, and to preclude fouling of the plug in carbon.
Date: October 24, 1922
Creator: Bronson, Fred L.
Item Type: Refine your search to only Patent

Threading Apparatus For Pipes.

Description: Patent for improvements of the threading apparatus for pipes through a simple attachment to automobiles wheels. Illustrated figures with descriptions are presented to easily show the ways in which the device attaches and is used.
Date: December 28, 1920
Creator: Adkins, Otto O.
Item Type: Refine your search to only Patent

Toy Aeroplane.

Description: Patent for a new and improved toy airplane to be propelled by the feet and steered by the child seated inside, including illustrations. It "is relatively simple and inexpensive to produce, while also being able to withstand considerable rough handling" (lines 26-28).
Date: March 15, 1921
Creator: Paul, Leon R.
Item Type: Refine your search to only Patent

Pump

Description: Patent for improvements to pumps in working barrels, packing, and packing chambers, the purpose of which is to eliminate easily worn parts and improve the efficiency of these pumps, including illustrations.
Date: November 28, 1922
Creator: Kerr, Michael A.
Item Type: Refine your search to only Patent

Hay-Press.

Description: Patent for the improvement of hay presses used for forming tightly-compressed hay bales. Improvements include the provision of, "a hand or power operated hay press which may be operated to cause a great pressure to be exerted on the hay or other material being pressed, with a minimum exertion on power means" (lines 12-16). The invention of simple and durable construction with minimal parts reducing need for repair.
Date: November 9, 1920
Creator: Powell, Walter E. & Powell, Rosa E.
Item Type: Refine your search to only Patent
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