UNT Libraries Government Documents Department - 219 Matching Results

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Reamer.

Description: Patent for rotary reamers for progressively enlarging holes in pilot drills, particularly roller disk type reamers used in oil, water, or mining applications.
Date: April 19, 1921
Creator: Humason, Granville A.
Item Type: Refine your search to only Patent

Wrench

Description: Patent for wrenches that provides a means for engaging faces of the jaws to be renewed or changed. This improvement also allows for secure placement without loss of motion.
Date: August 2, 1921
Creator: Belcher, Mark
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Explosion-Hatch for Oil-Tanks.

Description: Patent for useful and new improvements in explosion hatches for oil tanks. This product specifically provides a hatch on the oil tank which will permit the escape of combustion gasses through the hatchway. It does so without damage to the hatch, case, or the tank. This provides additional safety and security for the operator.
Date: November 8, 1921
Creator: Hull, Burton E.
Item Type: Refine your search to only Patent

Roller Boring-Drill.

Description: Patent for a roller boring-drill with improved arrangement of cutters on the head, and formation of teeth on the cutters. This new head design is better for drilling formations that are not brittle.
Date: August 23, 1921
Creator: Fletcher, Harold W.
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Valve-Cleaner.

Description: Patent for a valve cleaner to remove carbon from the internal combustion motors in automobiles. It can be used without removing the valve or motor.
Date: December 13, 1921
Creator: Henderson, Daniel D.
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Pneumatic Disk Gin.

Description: Patent for an improved version of a pneumatic disk gin. It has been designed for "ginning fibrous material, such as seed cotton" (lines 13-14) and improves the separation of the cotton and the seeds with the use of its perforated disks.
Date: February 14, 1922
Creator: Garner, James C.
Item Type: Refine your search to only Patent

Vehicle-Hoist.

Description: Patent for vehicle hoist that "will be operated automatically by the momentum of the vehicle" (lines 17-19). The hoist is intended to be accessible to all users, professional and layperson, due to its simple design and lower price.
Date: December 6, 1921
Creator: Boutte, John G.
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Photoprinter.

Description: Patent for a photograph printer that includes a mask mechanism to create prints of different sizes. Construction is such that the person using the printer can work the printer accurately and quickly complete work.
Date: April 11, 1922
Creator: Lockhart, William E.
Item Type: Refine your search to only Patent

Tractor.

Description: Patent for improvements to a previous patent application for a tractor (Serial No. 399599, filed 1920-07-28). The improvements include rearrangements of parts for the driving wheels from the front to the rear and the rearrangement of the transmission housing.
Date: January 10, 1922
Creator: Lewis, Otto Leroy
Item Type: Refine your search to only Patent

Wrench

Description: Patent for an improvement in the design of wrenches, particular for heavy work such as deep well drilling, but still being able to be designed at smaller sizes to handle lighter work.
Date: April 11, 1922
Creator: Reed, Clarence E.
Item Type: Refine your search to only Patent

Pneumatic Tire

Description: Patent for pneumatic tire (for use on motor vehicle wheels) with application to inner tubes that are employed within the outer casing of tire. Tire provides self-sealing inner tube for piercings or punctures.
Date: November 29, 1921
Creator: Allyn, Harley H.
Item Type: Refine your search to only Patent

Process of Making Bearings

Description: Patent for the process of making bearings, for improvement of bearings and the process of bearing formation on the interior of rotary members (or rotary cutters used on earth boring drills).
Date: December 13, 1921
Creator: Fletcher, Harold W.
Item Type: Refine your search to only Patent

Spring Wheel.

Description: Patent for the improvement of spring wheels. It is to prevent the movement of a car's rim or hub when sharp turns are being made.
Date: November 22, 1921
Creator: Livings, James Arthur
Item Type: Refine your search to only Patent

Vehicle.

Description: Patent for improvements to vehicle structure. This includes adjustments to the wheel base for better steering movements and vehicle capacity.
Date: November 21, 1922
Creator: Furlong, Martin J.
Item Type: Refine your search to only Patent
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