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Cermets and method for making same
The present invention is directed to a method for making a wide variety of general-purpose cermets and for radioactive waste disposal from ceramic powders prepared from urea-dispersed solutions containing various metal values. The powders are formed into a compact and subjected to a rapid temperature increase in a reducing atmosphere. During this reduction, one or more of the more readily reducible oxides in the compact is reduced to a selected substoichiometric state at a temperature below the eutectic phase for that particular oxide or oxides and then raised to a temperature greater than the eutectic temperature to provide a liquid phase in the compact prior to the reduction of the liquid phase forming oxide to solid metal. This liquid phase forms at a temperature below the melting temperature of the metal and bonds together the remaining particulates in the cermet to form a solid polycrystalline cermet.
Date:
April 1, 1981
Creator:
Aaron, W. S.; Kinser, D. L. & Quinby, T. C.
System:
The UNT Digital Library
Laser barometer
This paper describes an invention of a pressure measuring instrument which uses laser radiation to sense the pressure in an enclosed environment by means of measuring the change in refractive index of a gas - which is pressure dependent.
Date:
April 1, 1998
Creator:
Abercrombie, K.R.; Shiels, D. & Rash, T.
System:
The UNT Digital Library
Cotton Chopper
Patent for a cotton chopper. Illustration included.
Date:
April 6, 1909
Creator:
Abrams, Frederic
System:
The Portal to Texas History
Flushing Apparatus.
Patent for a flushing apparatus to be used to flush tanks that are normally kept empty. It is also "an improved siphon for emptying the tank, and also an improved mechanism for starting the siphon" (lines 22-24).
Date:
April 3, 1894
Creator:
Ackley, George D.
System:
The Portal to Texas History
Improvement In Corn And Cotton-Seed Planters.
This patent is an upgraded corn and seed planter machine that plants corn, cotton, and other types of seeds for mass production. The machine is aligned with the surface of the ground. It does not converse with the plows that are attached to it, freeing up the machine to release seeds proficiently with ease.
Date:
April 9, 1878
Creator:
Adams, Benjamin F.
System:
The Portal to Texas History
Reproducing Device for Graphophones.
Patent for a reproducing device for graphophones improving the objects that transmit sound to the horn or like element and provide a new means to mount the tone arm. It further improves the means for mounting the needle on the device.
Date:
April 22, 1919
Creator:
Adams, Henry Rolland
System:
The Portal to Texas History
Tile-Machine.
Patent for a tile pipe molder that "expeditiously and cheaply make subirrigating pipe right at the side of the ditch where it is to be laid" (lines 10-13).
Date:
April 3, 1894
Creator:
Adamson, John
System:
The Portal to Texas History
Seed-Planter Attachment.
Patent for "seed-planter attachments; and it has for its object to provide a new and useful machine of this character adapted to simultaneously plant two rows of corn, cotton, or other seed at any desired distance apart and to also provide means for marking the third row at any width from the planter." (Lines 8-15) Includes instructions and illustrations.
Date:
April 14, 1896
Creator:
Adkins, Stephen J.
System:
The Portal to Texas History
Cotton-Picker.
Patent for a skeleton glove for picking cotton that protects the fingers from chafing from the plant through the use of metal or leather thimbles on the end of each finger of the glove.
Date:
April 2, 1907
Creator:
Adkins, Willis
System:
The Portal to Texas History
Solar coal-gasification reactor with pyrolysis-gas recycle. [Patent application]
Coal (or other carbonaceous matter, such as biomass) is converted into a product gas that is substantially free from hydrocarbons. The coal is fed into a solar reactor, and solar energy is directed into the reactor onto coal char, creating a gasification front and a pyrolysis front. A gasification zone is produced well above the coal level within the reactor. A pyrolysis zone is produced immediately above the coal level. Steam, injected into the reactor adjacent to the gasification zone, reacts with char to generate product gases. Solar energy supplies the energy for the endothermic steam-char reaction. The hot product gases flow from the gasification zone to the pyrolysis zone to generate hot char. Gases are withdrawn from the pyrolysis zone and reinjected into the region of the reactor adjacent the gasification zone. This eliminates hydrocarbons in the gas by steam reformation on the hot char. The product gas is withdrawn from a region of the reactor between the gasification zone and the pyrolysis zone. The product gas will be free of tar and other hydrocarbons, and thus be suitable for use in many processes.
Date:
April 6, 1981
Creator:
Aiman, W.R. & Gregg, D.W.
System:
The UNT Digital Library
Car Door Fastening.
Patent for a new and improved car-door fastening. This design "consists in a novel construction and arrangement of a staple, a hook-hasp, key, and a key-plate, whereby several advantages are obtained . . . for securing the sliding doors of box-cars and other railway-cars" (lines 8-14).
Date:
April 19, 1881
Creator:
Alexander, Francis Marion
System:
The Portal to Texas History
Vehicle-Wheel
Patent for new and useful improvements to the Vehicle-Wheel. Tire may be formed into a disk wheel constructed with nuts, bolts, rivets, and screws to compensate for any regular and irregular pressure stresses a tire may be subjected to on a road. A further improvement is to provide a more resilient disk wheel to have more durability and longer use on the road.
Date:
April 12, 1921
Creator:
Allan, William N.
System:
The Portal to Texas History
Automatic Sand Trap
Patent for an automatic sand trap related to automatic devices for separating suspensions into two products and is concerned with the separation of sand from water for dam building and like purposes.
Date:
April 12, 1921
Creator:
Allen, Charles
System:
The Portal to Texas History
Automatic Separator and Evaporator.
Patent for an improved automatic separator and evaporator which controls the intake with an included air-lift or jet-ejector, including illustrations.
Date:
April 5, 1921
Creator:
Allen, Charles
System:
The Portal to Texas History
Feed Spout Barrier
Patent for "a feel spout barrier for slime thickeners, settling tanks, separating tanks and the like" (lines 8-10) with instructions and illustrations.
Date:
April 12, 1921
Creator:
Allen, Charles
System:
The Portal to Texas History
Slime-Pulp Thickener.
Patent for a machine used in the wet milling process. It allows proportionate distribution of liquids to aide during the thickening process.
Date:
April 17, 1923
Creator:
Allen, Charles
System:
The Portal to Texas History
Car-Coupling.
Patent for "pin-and-link car-couplings to enable the same to couple automatically and to be readily uncoupled without going between cars, and to provide means for holding the link in substantially a horizontal position for guiding it into the mouth of a draw-head to avoid going between cars and guiding the link by hand." (Lines 12-19) Includes instructions and illustrations.
Date:
April 13, 1897
Creator:
Allen, George F.; Allen, Charles D. & Martin, Richard W.
System:
The Portal to Texas History
Device for Slicing Fish.
Patent for new and useful improvements to a device for slicing fish into smooth and even slices, including illustrations.
Date:
April 24, 1917
Creator:
Allen, James Leonard
System:
The Portal to Texas History
Necktie
Patent for a pre-made necktie. This is a pre-made four in hand necktie that is designed to be adjustable to various neck sizes and made to not tear a shirt collar.
Date:
April 27, 1915
Creator:
Allen, Joseph H.
System:
The Portal to Texas History
Improvement in Devices for Teaching Musical Transposition.
Patent for an improvement in devices for teaching musical transposition. The invention in question is composed of a keyboard "with sliding instruments and scales" (1).
Date:
April 25, 1876
Creator:
Allison, Thomas J.
System:
The Portal to Texas History
Metallic Railway-Tie.
Patent for a metallic railway tie, which can expand and hold the track in place.
Date:
April 5, 1910
Creator:
Allsbrooks, William Jefferson
System:
The Portal to Texas History
Window Light Regulator
Patent for a window light regulator. The light regulator is designed of two shades. The first shape is dark and the other is transparent. Illustration included.
Date:
April 16, 1907
Creator:
Alrich, Henry
System:
The Portal to Texas History
Tractor
Patent for "novel features of construction and combinations of parts" in tractors to ensure a steady, even pace of travel and allow for traversing uneven landscape while maintaining a level setting, including illustrations and instructions.
Date:
April 23, 1918
Creator:
Altgelt, Herman E.
System:
The Portal to Texas History
Wire-Fence-Stay Machine.
Patent for wire working machines, specifically for automatically making wire fence stays. This machine can be operated manually and it is portable.
Date:
April 30, 1918
Creator:
Alverson, Lewis
System:
The Portal to Texas History