Access
Resource Type
Partner
Collection
Serial/Series Title
Degree Department
Country
States
Decade
Month
Day
537 Matching Results
Results open in a new window/tab.
Results:
1 - 24 of
537
next
Method for fabricating a seal between a ceramic and a metal alloy
A method of fabricating a seal between a ceramic and an alloy comprising the steps of prefiring the alloy in an atmosphere with a very low partial pressure of oxygen, firing the assembled alloy and ceramic in air, and gradually cooling the fired assembly to avoid the formation of thermal stress in the ceramic. The method forms a bond between the alloy and the ceramic capable of withstanding the environment of a pressurized water reactor and suitable for use in an electrical conductivity sensitive liquid level transducer.
Date:
July 24, 1981
Creator:
Kelsey, P.V. Jr. & Siegel, W.T.
System:
The UNT Digital Library
Neutron-detection apparatus
An atomic fission counting apparatus used for neutron detection is provided with spirally curved electrode plates uniformly spaced apart in a circular array and coated with fissile material.
Date:
April 24, 1981
Creator:
Kopp, M.K. & Valentine, K.H.
System:
The UNT Digital Library
Method for producing nuclear fuel
Nuclear fuel is made by contacting an aqueous solution containing an actinide salt with an aqueous solution containing ammonium hydroxide, ammonium oxalate, or oxalic acid in an amount that will react with a fraction of the actinide salt to form a precipitate consisting of the hydroxide or oxalate of the actinide. A slurry consisting of the precipitate and solution containing the unreacted actinide salt is formed into drops which are gelled, calcined, and pressed to form pellets.
Date:
April 24, 1981
Creator:
Haas, P.A.
System:
The UNT Digital Library
Separator assembly for use in spent-nuclear-fuel shipping cask. [Patent application]
A separator assembly for use in a spent-nuclear-fuel shipping cask has a honeycomb-type wall structure defining parallel cavities for holding nuclear fuel assemblies. Tubes formed of an effective neutron-absorbing material are embedded in the wall structure around each of the cavities and provide neutron flux traps when filled with water.
Date:
April 24, 1981
Creator:
Bucholz, J.A.
System:
The UNT Digital Library
Power recovery system for coal-liquefaction process. [Patent application]
Method and apparatus for minimizing energy required to inject reactant such as coal-oil slurry into a reaction vessel, using high pressure effluent from the latter to displace the reactant from a containment vessel into the reaction vessel with assistance of low pressure pump. Effluent is degassed in the containment vessel, and a heel of the degassed effluent is maintained between incoming effluent and reactant in the containment vessel.
Date:
April 24, 1981
Creator:
Horton, J. R.
System:
The UNT Digital Library
Coal gasification apparatus. [Patent application]
Coal hydrogenation vessel has hydrogen heating passages extending vertically through its wall and opening into its interior.
Date:
April 24, 1981
Creator:
Nagy, C.K.
System:
The UNT Digital Library
Transistorized power switch and base drive circuit therefore
A high power switching circuit is disclosed which utilizes a four-terminal Darlington transistor block to improve switching speed, particularly in rapid turn-off. Two independent reverse drive currents are utilized during turn-off in order to expel the minority carriers of the Darlington pair at their own charge sweep-out rate. The reverse drive current may be provided by a current transformer, the secondary of which is tapped to the base terminal of the power stage of the Darlington block. In one application, the switching circuit is used in each power switching element in a chopper-inverter drive of an electric vehicle propulsion system.
Date:
March 24, 1981
Creator:
Lee, F.C. & Carter, R.A.
System:
The UNT Digital Library
Improved method of preparing composite superconducting wire
An improved method of preparing composite multifilament superconducting wire of Nb/sub 3/Sn in a copper matrix which eliminates the necessity of coating the drawn wire with tin is described. A generalized cylindrical billet of an alloy of copper containing at least 15 weight percent niobium, present in the copper as discrete, randomly distributed and oriented dendritic-shaped particles, is provided with at least one longitudinal opening which is filled with tin to form a composite drawing rod. The drawing rod is then drawn to form a ductile composite multifilament wire containing a filament of tin. The ductile wire containing the tin can then be wound into magnet coils or other devices before heating to diffuse the tin through the wire to react with the niobium forming Nb/sub 3/Sn. Also described is an improved method for making large billets of the copper-niobium alloy by consumable-arc casting.
Date:
April 24, 1981
Creator:
Verhoeven, J. D.; Gibson, E. D.; Finnemore, D. K.; Ostenson, J. E.; Schmidt, F. A. & Owen, C. V.
System:
The UNT Digital Library
Nut-Lock.
Patent for new qualities of nut-lock security, efficiency, and convenience, including illustrations.
Date:
April 24, 1906
Creator:
Payne, Lewis.
System:
The Portal to Texas History
Apparatus for Burning Fuel-Oil
Patent for an oil burner for stoves and furnaces. Illustrations included.
Date:
September 24, 1912
Creator:
Kunkel, Albert R.
System:
The Portal to Texas History
Cotton-Chopper Attachment for Cultivators
Patent for a chopping device that can be attached to an existing cultivator, allowing for the use of the cultivator to become a more versatile farm vehicle.
Date:
December 24, 1901
Creator:
Vickers, John J.
System:
The Portal to Texas History
Harvester Attachment.
Patent for an attachment that cleans and scrapes the drive wheels of mowing machines and harvesters, to keep them free of accumulated mud and running smoothly.
Date:
December 24, 1901
Creator:
Marshall, John Henry.
System:
The Portal to Texas History
Aerodrome
Patent for an aerodrome which is a heavier than air flying machine powered by motorized propellers
Date:
August 24, 1909
Creator:
Sinclair, William
System:
The Portal to Texas History
Antifriction Device for Cranks and Pitmen
Patent for an antifriction device used to "prevent dust and grit from accumulating in the anti-friction bearings" (lines 17-18). Illustrations included.
Date:
December 24, 1907
Creator:
Neighbour, William W.
System:
The Portal to Texas History
Combined Rake and Stacker.
Patent for an improved combined rake and stacker. The improvement includes an added horse-rake for hay, which can be used to load hay into a wagon or place in a stack.
Date:
December 24, 1901
Creator:
Jahns, R. H.
System:
The Portal to Texas History
Method and apparatus for the formation of a spheromak plasma
An inductive method and apparatus for forming detached spheromak plasma using a thin-walled metal toroidal ring are described that uses external current leads and internal poloidal and toroidal field coils located inside a vacuum chamber filled with low density hydrogen gas and an external axial field generating coil. The presence of a current in the poloidal field coils, and an externally generated axial field sets up the initial poloidal field configuration in which the field is strongest toward the major axis of the toroid. The internal toroidal-field-generating coil is then pulsed on, ionizing the gas and inducing poloidal current and toroidal magnetic field into the plasma region in the sleeve exterior to and adjacent to the ring and causing the plasma to expand away from the ring and toward the major axis. Next the current in the poloidal field coils in the ring is reversed. This induces toroidal current into the plasma and causes the poloidal magnetic field lines to reconnect. The reconnection continues until substantially all of the plasma is formed in a separated spheromak configuration held in equilibrium by the initial external field.
Date:
March 24, 1981
Creator:
Jardin, S. C.; Yamada, M.; Furth, H. P. & Okabayashi, M.
System:
The UNT Digital Library
Baling-Press.
Patent for "baling-presses, and has for its objects to provide a simple and efficient apparatus embodying a rebounding plunger; to provide means for regulating the resistance offered to the advance movement of the forward head-block; to provide improved means for tucking the material during the advance movement of the plunger; to provide means for regulating the length of a bale; to provide means for automatically inserting a head-block when a bale of the desired length has been formed; and to provide means whereby the raising and lowering of the press-box or baling-chamber is accomplished by the draft-horses through the sweep, and without the use of jacks or other analogous devices." (Lines 8-24) Includes instructions and illustrations.
Date:
December 24, 1895
Creator:
Keith, George A.
System:
The Portal to Texas History
Apparatus for Loading Cotton-Bales, &c.
Patent for an apparatus for loading cotton-bales onto trucks from the compress. It is comprised of a cylinder, a piston, a piston rod, an inlet and exhaust pipes and a valve, a chain with grapnels at one end end and the other end is connected to the piston rod, a sheave, an adjustable slidable trip rod, a pivoted trip lever connected to the cylinder, a four armed lever connected to the valve, and connecting rods.
Date:
December 24, 1895
Creator:
Thompson, George
System:
The Portal to Texas History
Cotton and Corn Planter.
Patent for a new and improved seed planter. This design "features . . . first, reciprocating forked seed pushers or plungers attached to a sliding frame and operating alternately to deliver the seed through a covered opening in the bottom of the hopper, whence it passes into the furrow; second, an intermittently-rotating shaft arranged in the seed-hopper and provided with spiral or oblique arms for agitating the seed and feeding it toward the discharge opening" (lines 15-24).
Date:
January 24, 1882
Creator:
Turley, James M.
System:
The Portal to Texas History
Automatic Car-Switching System.
Patent for "a system of switching where the cars of a train are pushed up an incline and placed successively on an elevated annular revolving platform, by which they are automatically distributed to their respective receiving-tracks" (lines 9-14).
Date:
March 24, 1896
Creator:
Lelardoux, Pierre
System:
The Portal to Texas History
Baling Press.
Patent for a new and improved baling press. This design consists "of the base-plate, the casing made in two trough-shaped sections . . . one of which is hinged to the base-plate the bifurcated uprights, the operating-levers on each side hinged to the uprights, the compressing-beam extending across the baling-chamber and through the uprights, and connections between the compressing-beam and the levers" (lines 92-100).
Date:
September 24, 1889
Creator:
Hillman, William & Ripple, Joseph F.
System:
The Portal to Texas History
Apparatus for Stamping Envelopes
Patent for "a means whereby with one motion a stamp will be supplied from the'apparatus, moistened, and placed in position upon a letter, wrapper, or parcel adapted to receive it, and wherein a number of stamps may be consecutively placed when and as desired" (lines 10-15).
Date:
September 24, 1889
Creator:
Helland, Hans & Matzow, Frantz
System:
The Portal to Texas History
Bailing-Press.
Patent for Bailing Press including illustrations. The purpose of the bailing press was to improve "the bailing-press especially adapted for bailing cotton, which press is simple in construction, strong and durable, and operates rapidly" ( lines 9-12).
Date:
November 24, 1885
Creator:
Clark, Frank
System:
The Portal to Texas History
Ant Trap.
Patent for a new and improved ant trap. This design consists "[i]n an ant-trap, the combination, with a trough formed with a top [that is] flanged . . . of a box connected thereto by a tube terminating in a disk . . . [and] of the connecting-tubes, box, and fence" (lines 62-68).
Date:
November 24, 1885
Creator:
Thompson, William Henderson
System:
The Portal to Texas History