UNT Libraries Government Documents Department - 543 Matching Results

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Abrading Element For Tire-Patch Containers

Description: Patent for an improved tool that is affixed to tire-patch containers. It is used for abrading the surface of a tire to effectively roughen it (without the use of sandpaper) to allow the adhesion of a patch. Includes illustrations.
Date: January 4, 1921
Creator: Duffy, Jesse A.

Adjustable End Die.

Description: Patent for improvements to adjustable end dies. These improvements allow convenient rethreading of bolts while it is engaged with an object.
Date: February 8, 1921
Creator: Wright, John G.

Adjustable Flat Die.

Description: Patent for improved adjustable flat dies which provide different sizes of cutting dies to the cutting device.
Date: May 10, 1921
Creator: Wright, John G.

Adjustable Friction-Grab for Fishing-Tools.

Description: Patent for friction grabs for fishing tools in well drilling operations that can be "easily adjusted for different sized holes or wells and which will be automatically adjusted and the grabs automatically closed on the object to be removed" (lines 14-17).
Date: May 24, 1921
Creator: Dickson, Lawrence E.

Adjustable Luggage-carrier

Description: Patent for a luggage carrier that attaches to vehicles to carry packages of various sizes. Includes illustrations.
Date: April 5, 1921
Creator: Green, John R.

Aeroplane.

Description: Patent for aeroplane construction to include improvements to air motor protection to minimize resistance and the use of air cups to direct the full force of air to the motor shaft, including illustrations.
Date: November 15, 1921
Creator: Smith, Joseph A.

Aeroplane

Description: Patent for an aeroplane that is inexpensive and easily built, while preventing the aeroplane from going into a tailspin.
Date: December 13, 1921
Creator: {McGee, Dan}

Aeroplane-Tail.

Description: Patent for improvements to the tail of aeroplanes. This invention is to be used to help control the flight of planes or heavy projectiles, and would not have effects on the equilibrium or be difficult to use.
Date: January 18, 1921
Creator: Joseph, M. Krowka

Agricultural Machine

Description: Patent for a tool to destroy weeds. This invention reuses several parts from farming tools.
Date: November 22, 1921
Creator: Northcutt, John G. & Crawford, Miner

Air-Brake and Starter for Automobiles.

Description: Patent for multiple innovations to automobile air-brakes and starters, including improvements such as ease of use, reliability, and versatility amongst vehicle models.
Date: December 13, 1921
Creator: Green, Herbert

Air-Storage-Tank Liquid-Dispensing Device.

Description: Patent for an air storage tank liquid dispending device which is convenient and economically better to pull liquid from wells, buried tanks, etc.
Date: May 10, 1921
Creator: Posa, Emit M.

Aircraft

Description: Patent for Improvements to aircraft steering. The invention allows the pilot to adjust the center of mass.
Date: April 5, 1921
Creator: Johnson, Louis V.

Amusement Device.

Description: Patent for a Ferris wheel in which the passenger cars rotate horizontally in addition to rotating vertically with the direction of the main wheel.
Date: May 24, 1921
Creator: Lindamood, Roy S.

Animal-Trap

Description: Patent for an animal trap which is to be sprung by the animal when the bait is touched. It is constructed in such a manner that the animal will be instantly killed. The metal parts of the trap are to create a strong and durable trap and to be manufactured at a small expense.
Date: April 5, 1921
Creator: Brewington, Philip Jennings

Animal Trap.

Description: Patent for Animal Trap especially adapted for the extermination of mice and similar rodents.
Date: May 3, 1921
Creator: Fredrick, Willaim.

Antileak Composition.

Description: Patent for improvements in antileak composition in order to prevent leaks in liquid holding containers like radiators, boilers, etc.
Date: July 5, 1921
Creator: Shrum, Will N.

Apparatus For Forcing Fluid From Wells.

Description: Patent for a narrow device to use fluid dynamics to remove certain fluids without loss of others. The apparatus is let down the well until one end is submerged before pressurized with air to seperate fluids and bring oil up to the surface of the well.
Date: February 22, 1921
Creator: Bodungen, Charles G.

Apparatus for Separating Substances of Different Dielectric Capacities.

Description: Patent for an apparatus for separating substances of different dielectric capacities; the objective of this invention is to provide means for the material to be separated into its component particles for the purpose of producing material of dielectric hysteric impedance and collecting the separated particles according to the difference in time that the particles maintain their polarity due to the impedance generated from them.
Date: August 2, 1921
Creator: Sutton, Henry M.

Apparatus for Training Troop in the Pointing of Guns

Description: Patent for improvements to apparatus to train troops in pointing and aiming various firearms. An electric lamp shines light through a tube to point at the target, with a shutter that can operate simultaneously with the trigger or remain open.
Date: April 26, 1921
Creator: Place, Olney

Arrangement and Construction of Self-Service-Store Fixtures

Description: Patent for new and useful improvements in arrangement and construction of self-service-store fixtures. This invention provides an arrangement of shelving in sections with other parts of store furnture, the shelving being so arranged and constructed that all available space is economically utilized and at the same time permits the goods displayed on the shelves to be visible from a designated point in the store to avoid surreptitious removal of any goods while providing ample room for customers … more
Date: October 4, 1921
Creator: Hill, Leslie A.

Attaching-Ring.

Description: Patent for an attaching ring to connect a boiler to a water heater jacket that is described in pending application Serial No. 304,041.
Date: June 21, 1921
Creator: Fowles, Alfred T.

Attachment for Gun-Slings

Description: Patent for an attachment for gun slings that can be used on army rifles or other guns and provides the means for the sling to be held tight against the arm for steady aim.
Date: November 8, 1921
Creator: {Grierson, Benjamin Henry}

Attachment For Internal-Combustion Motors

Description: Patent for improvements in attachments for internal- combustion motors. The invention is about new and useful improvements to a specific attachment. The two stated objectives are to provide a device adapted for application to the intake pipe on an internal combustion motor and to provide a device which may be locked in a closed position, thereby preventing theft.
Date: March 29, 1921
Creator: Thomas, James Clarence

ATTACHMENT FOR INTERNAL COMBUSTION MOTORS

Description: Patent for an Attachment for Internal Combustion Motors. This new attachment provides many improvements in the regulation of auxiliary air, whether it enters or leaves the internal combustion motor (Shine). It also regulates hot or cold air, or can shut off the air supply entirely (Shine).
Date: April 26, 1921
Creator: Shine, John
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