Resource Type
Degree Department
Country
Decade
Day
Churn Power.
Patent for a new and improved churn power. This design "relates to improvements in churn powers; and it consists of a plunger-shaft so connected to a wheel by means of a loose rod as to alternately raise or lower said shaft as the wheel rotates. The object of the invention is to accomplish the up-and-down motion and consequent agitation without the usual amount of labor" (lines 9-16).
Date:
March 31, 1885
Creator:
Patton, Charles W.
System:
The Portal to Texas History
Bracket.
Patent for improvements in brackets that used to support shelf or for other purposes by using a combination of hinged brackets, a longitudinal wire formed with bends to receive the inclined portions of the brackets, and with hooks at its outer ends; this improved brackets “can be folded in close contact with the shelf, so as to occupy little space for shipment or storage.” (Lines 17-19) Illustration is included.
Date:
March 31, 1891
Creator:
Porter, Charles
System:
The Portal to Texas History
Apparatus for Scouring Water-Ways.
Patent for an improved apparatus for scouring water-ways by using water-discharge pipes and air-discharge pipes arranged at each side of the vessel. When “vessel is slowly moved forward while the water and air forcing pumps are working,..... direct force of the water-jets and air-jets will agitate and scatter and lift the dislodged particles and float them much higher and longer than would be the case were the water-jet pipes alone used.” (Lines 63-75) Illustration is included.
Date:
March 31, 1891
Creator:
Holden, Elbridge G.
System:
The Portal to Texas History
Axle.
Patent for improvement in axles by using a “combination of a bar, two skeins and means for holding the skeins in place upon the bar,” (lines 17-18) includes illustration.
Date:
March 31, 1891
Creator:
Stewart, John A.
System:
The Portal to Texas History
Animal Power.
Patent for a new and improved animal power (engine). This design "consists in an animal-power constructed with a small wheel placed loosely upon a stationary upright shaft, and connected by hinges with the inner ends of arms and sweeps attached to the main wheel, which is mounted upon caster-wheels to support the weight of the wheel and its attachments. . . . The object of this invention is to economize power and promote convenience" (lines 16-25).
Date:
October 31, 1882
Creator:
Knox, William Curtis
System:
The Portal to Texas History
Brake and Coasting Sprocket-Wheel for Velocipedes.
Patent for "a combined coasting and driving wheel with brake attachments for stopping velocipedes, whether coasting or whether the velocipede is being propelled by some kind of motive power, by which a person can coast by simply stopping the motion of the pedals and holding the pedals still with the feet." (Lines 9-15) Includes instructions and illustrations.
Date:
August 31, 1897
Creator:
Wallerich, Nicholas
System:
The Portal to Texas History
Bottle.
Patent for "a bottle and stopper whereby the bottle can be filled in the ordinary manner, but after being sealed by the stopper of novel construction it cannot be refilled after once being emptied without breaking or fracturing the bottle." (Lines 12-18) Includes instructions and illustrations.
Date:
August 31, 1897
Creator:
Stallings, George V.
System:
The Portal to Texas History
Clothes-Pounder.
Patent for "an automatic clothes washer and soaper whereby the clothes are soaped and cleansed by one and the same operation." (Lines 18-20) Includes instructions and illustrations.
Date:
August 31, 1897
Creator:
Rylander, William P.
System:
The Portal to Texas History
Acyclonucleosides of 2-nitroimidazole and uses as diagnostic and therapeutic agents
An acyclonucleoside of nitroimidazole having the ability to specifically bind to tumor cells and useful for therapy, chemotherapy, imaging and radiosensitizing the tumor cells.
Date:
December 31, 1990
Creator:
Srivastava, Prem C. & Hasan, Ahmad
System:
The UNT Digital Library
Precision wire feeder for small diameter wire
This invention is comprised of a device for feeding small diameter wire having a diameter less than .04 mm (16 mil) to a welding station which includes a driving wheel for controllably applying a non-deforming driving force to the wire to move the free end of the wire towards the welding station; and a tension device such as a torque motor for constantly applying a reverse force to the wire in opposition to the driving force to keep the wire taut. 1 fig.
Date:
December 31, 1990
Creator:
Brandon, E. D.; Hooper, F. M. & Reichenbach, M. L.
System:
The UNT Digital Library
A backscattering spectrometry device for identifying unknown elements present in a workpiece
This invention is comprised of a backscattering spectrometry method and device for identifying and quantifying impurities in a workpiece during processing and manufacturing of that workpiece. While the workpiece is implanted with an ion beam, that same ion beam backscatters resulting from collisions with known atoms and with impurities within the workpiece. Those ions backscatter along a predetermined scattering angle and are filtered using a self-supporting filter to stop the ions with a lower energy because they collided with the known atoms of the workpiece of a smaller mass. Those ions which pass through the filter have a greater energy resulting from impact with impurities having a greater mass than the known atoms of the workpiece. A detector counts the number and measures the energy of the ions which pass through the filter. From the energy determination and knowledge of the scattering angle, a mass calculation determines the identity, and from the number and solid angle of the scattering angle, a relative concentration of the impurity is obtained.
Date:
December 31, 1990
Creator:
Doyle, Barney L. & Knapp, James A.
System:
The UNT Digital Library
Separation of metal ions from aqueous solutions
This invention is comprised of a process and apparatus for quantitatively and selectively separating metal ions from mixtures thereof in aqueous solution. The apparatus includes, in combination, a horizontal electrochemical flowing cell containing flowing bulk electrolyte solution and an aqueous, metal ion-containing solution, the cell containing a metal mesh working electrode, a counter electrode positioned downstream from the working electrode, an independent variable power supply/potentiostat positioned outside of the flowing cell and connected to the electrodes, and optionally a detector such as a chromatographic detector, positioned outside the flowing cell. This apparatus and its operation has significant application where trace amounts of metal ions are to be separated.
Date:
December 31, 1991
Creator:
Almon, A.
System:
The UNT Digital Library
Noise reduction in negative-ion quadrupole mass spectrometry
This invention is comprised of a quadrupole mass spectrometer (QMS) system having an ion source, quadrupole mass filter, and ion collector/recorder system. A weak, transverse magnetic field and an electron collector are disposed between the quadrupole and ion collector. When operated in negative ion mode, the ion source produces a beam of primarily negatively-charged particles from a sample, including electrons as well as ions. The beam passes through the quadrupole and enters the magnetic field, where the electrons are deflected away from the beam path to the electron collector. The negative ions pass undeflected to the ion collector where they are detected and recorded as a mass spectrum.
Date:
December 31, 1991
Creator:
Chastagner, P.
System:
The UNT Digital Library
Robot arm apparatus
A robot arm apparatus is provided for inspecting and/or maintaining an interior of a steam generator which has an outside wall and a port for accessing the interior of the steam generator. The robot arm apparatus includes a flexible movable conduit for conveying inspection and/or maintenance apparatus from outside the steam generator to the interior of the steam generator. The flexible conduit has a terminal working end which is translated into and around the interior of the steam generator. Three motors located outside the steam generator are employed for moving the terminal working end inside the steam generator in ``x,`` ``y,`` and ``z`` directions, respectively. Commonly conducted inspection and maintenance operations include visual inspection for damaged areas, water jet lancing for cleaning sludge deposits, core boring for obtaining sludge deposits, and scrubbing of internal parts.
Date:
December 31, 1990
Creator:
Nachbar, H. D.
System:
The UNT Digital Library
Method of recovering hazardous waste from phenolic resin filters
A method has been found for treating phenolic resin filter, whereby the filter is solubilized within the filter cartridge housing so the filter material can be removed from the cartridge housing in a remote manner. The invention consists of contacting the filter within the housing with an aqueous solution of about 8 to 12M nitric acid, at a temperature from about 110 to 190{degree}F, maintaining the contact for a period of time sufficient to solubilize the phenolic material within the housing, and removing the solubilized phenolic material from the housing, thereby removing the filter cartridge from the housing. Any hazardous or other waste material can then be separated from the filter material by chemical or other means.
Date:
December 31, 1990
Creator:
Meikrantz, David H.; Bourne, Gary L.; McFee, John N.; Burdge, Bradley G. & McConnell, John W., Jr.
System:
The UNT Digital Library
Process for the recovery of strontium from acid solutions
The invention is a process for selectively extracting strontium and technetium values from aqueous nitric acid waste solutions containing these and other fission product values. The extractant is a macrocyclic polyether in a diluent which is insoluble in water, but which will itself dissolve a small amount of water. The process will extract strontium and technetium values from nitric acid solutions which are up to 6 molar in nitric acid.
Date:
December 31, 1990
Creator:
Horwitz, E. P. & Dietz, M. L.
System:
The UNT Digital Library
Methods of and apparatus for recording images occurring just prior to a rapid, random event
An apparatus and a method are disclosed for recording images of events in a medium wherein the images that are recorded are of conditions existing just prior to and during the occurrence of an event that triggers recording of these images. The apparatus and method use an optical delay path that employs a spherical focusing mirror facing a circular array of flat return mirrors around a central flat mirror. The image is reflected in a symmetric pattern which balances astigmatism which is created by the spherical mirror. Delays on the order of hundreds of nanoseconds are possible.
Date:
December 31, 1991
Creator:
Kelley, E. F.
System:
The UNT Digital Library
Ultrasonic cleaning of interior surface
This invention is comprised of an ultrasonic cleaning apparatus for cleaning the interior surfaces of tubes. The apparatus includes an ultrasonic generator and reflector each coupled to opposing ends of the open-ended, fluid-filled tube. Fluid-tight couplings seal the reflector and generator to the tube, preventing leakage of fluid from the interior of the tube. The reflector and generator are operatively connected to actuators, whereby the distance between them can be varied. When the distance is changed, the frequency of the sound waves is simultaneously adjusted to maintain the resonant frequency of the tube so that a standing wave is formed in the tube, the nodes of which are moved axially to cause cavitation along the length of the tube. Cavitation maximizes mechanical disruption and agitation of the fluid, dislodging foreign material from the interior surface.
Date:
December 31, 1991
Creator:
Odell, D. M.
System:
The UNT Digital Library
Process of converting starch to glucose and glucose to lactic acid
This document describes a method for converting starch into lactic acid of sufficient purity for use as a substrate for biodegradable plastics. The process is designed to work on industrial food waste streams such as potato wastes or cheese whey permeate. For potato waste, {alpha}-amylase and calcium chloride are added to the starch containing waste and incubated at a pH of 4--7, a temperature of 90--130{degree}C, and a pressure above 15 psi for not less than 15 minutes. At this point, glucoamylase is added and the mixture is incubated at a temperature of 50--70{degree}C and a pH below 6.5 for 4 hours. This results in the conversion of more than 90% of the starch into glucose, which is substantially free of microbial contamination. The hydrolysate is filtered, and introduced with additional nutrients to a fermentor containing a lactose producing microorganism to form a fermentation broth. This results in the fermentation of glucose to lactose, which is filtered and subjected to electrodialysis for purification. Conversion of glucose to lactic acid or lactate occurs with an efficiency of over 95%. 1 fig. (MHB)
Date:
December 31, 1990
Creator:
Tsai, TenLin; Sanville, C. Y.; Coleman, R. D. & Schertz, W. W.
System:
The UNT Digital Library
Explosive laser light initiation of propellants
This invention is comprised of an improved initiator for artillery shell using an explosively generated laser light to uniformly initiate the propellent. A small quantity of a high explosive, when detonated, creates a high pressure and temperature, causing the surrounding noble gas to fluoresce. This fluorescence is directed into a lasing material, which lases, and directs laser light into a cavity in the propellant, uniformly initiating the propellant.
Date:
December 31, 1992
Creator:
Piltch, M. S.
System:
The UNT Digital Library
Selectable fragmentation warhead
This report discusses a selectable fragmentation warhead which is capable of producing a predetermined number of fragments from a metal plate, and accelerating the fragments toward a target. A first explosive located adjacent to the plate is detonated at selected number of points by laser-driven slapper detonators. In one embodiment, a smoother-disk and a second explosive, located adjacent to the first explosive, serve to increase acceleration of the fragments toward a target. The ability to produce a selected number of fragments allows for effective destruction of a chosen target.
Date:
December 31, 1992
Creator:
Bryan, C. S.; Paisley, D. L.; Montoya, N. I. & Stahl, D. B.
System:
The UNT Digital Library
Cobalt carbonyl catalyzed olefin hydroformylation in supercritical carbon dioxide
A method of olefin hydroformylation is provided wherein an olefin reacts with a carbonyl catalyst and with reaction gases such as hydrogen and carbon monoxide in the presence of a supercritical reaction solvent, such as carbon dioxide. The invention provides higher yields of n-isomer product without the gas-liquid mixing rate limitation seen in conventional Oxo processes using liquid media.
Date:
December 31, 1992
Creator:
Rathke, Jerome W. & Klingler, Robert J.
System:
The UNT Digital Library
Process and apparatus for coal hydrogenation
In a coal liquefaction process an aqueous slurry of coal is prepared containing a dissolved liquefaction catalyst. A small quantity of oil is added to the slurry and then coal-oil agglomerates are prepared by agitation of the slurry at atmospheric pressure. The resulting mixture is drained of excess water and dried at atmospheric pressure leaving catalyst deposited on the agglomerates. The agglomerates then are fed to an extrusion device where they are formed into a continuous ribbon of extrudate and fed into a hydrogenation reactor at elevated pressure and temperature. The catalytic hydrogenation converts the extrudate primarily to liquid hydrocarbons in the reactor. The liquid drained in recovering the agglomerates is recycled. 1 fig.
Date:
December 31, 1990
Creator:
Ruether, J. A. & Simpson, T. B.
System:
The UNT Digital Library
Ballistic impulse gauge
This invention is comprised of a gauge for detecting the impulse generated in sample materials by X-rays or other impulse producing mechanisms which utilizes a pair of flat annular springs to support a plunger relative to a housing which may itself be supported by a pair of flat annular springs in a second housing. The plunger has a mounting plate mounted on one end and at the other, a position or velocity transducer is mounted. The annular springs consist of an outer ring and an inner ring with at least three arcuate members connecting the outer within the inner ring.
Date:
December 31, 1992
Creator:
Ault, S. K.
System:
The UNT Digital Library