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581,437 Matching Results

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Cultivator (open access)

Cultivator

Patent for cultivator with illustrations and certain improvements on the invention.
Date: April 9, 1918
Creator: Whisenant, David A.
Object Type: Patent
System: The Portal to Texas History
Curing-House. (open access)

Curing-House.

Patent for a curing house for vegetables like sweet potatoes. The inventors "have found that the ceiling and dampers therein are not essential to the successful curing of vegetables; also that an exhaust fan is not necessary and a pent house on the roof with louvers in its sides gives sufficient ventilation and excellent results" (lines 23-28).
Date: September 28, 1920
Creator: Vaughan, Robert B. & Love, Ralph M.
Object Type: Patent
System: The Portal to Texas History
Cultivator (open access)

Cultivator

Patent for a cultivator "particularly adapted for cutting stalks in rows" (lines 110-111) and is designed to travel in a straight line with less side movement.
Date: December 3, 1918
Creator: Mills, Samuel E.
Object Type: Patent
System: The Portal to Texas History
Cultivator (open access)

Cultivator

Patent for turning and clearing cotton.
Date: February 25, 1919
Creator: Goodman, W. T.
Object Type: Patent
System: The Portal to Texas History
Fuel-Economizer for Engines (open access)

Fuel-Economizer for Engines

Patent for a device to increase the fuel efficiency of and reduce carbon deposits within combustion engines by means of an air controlling valve that supplies heated air to the intake manifold of the engine while it is running. The device is self-regulating, using a series of valves to deliver heated air in proportion to the degree of suction created by the pistons.
Date: March 9, 1920
Creator: Minor, Edward Lynnwood
Object Type: Patent
System: The Portal to Texas History
Crank. (open access)

Crank.

Patent for automobile attachments where the motor can be cranked to start without danger to the operator from an engine back-fire.
Date: August 31, 1920
Creator: Gilley, Zachriah E.
Object Type: Patent
System: The Portal to Texas History
Culvert. (open access)

Culvert.

Patent for a culvert which is to be used for sewers or other underground conveyers. Its is to be composed of varying materials that can be easily shipped and jointed together to form the sewer or other underground conveyer.
Date: March 23, 1920
Creator: Charliss, Charles F. J.
Object Type: Patent
System: The Portal to Texas History
Fuel Vaporizer for Carburetors. (open access)

Fuel Vaporizer for Carburetors.

Patent for "an improvement in fuel heaters or vaporizers for use with carburetors for hydrocarbon fuel engines" (lines 9-12). The device "can therefore utilize those hydrocarbons of specific gravity much higher than gasoline, as fuel for internal combustion engines, with safety and with more economy than has heretofore been deemed possible." (lines 106-111).
Date: February 7, 1922
Creator: Smith, Maurice O.
Object Type: Patent
System: The Portal to Texas History
Current-Motor. (open access)

Current-Motor.

Patent for a current motor in which water wheels are employed to drive electric generators. The design provides for pontoons to allow the water wheels to be adjustably supported. Constructed in sections, additional sections can easily be added and bracing is included so that the units can be configured to rise and fall together.
Date: February 15, 1921
Creator: Rebman, Johan J.
Object Type: Patent
System: The Portal to Texas History
Cultivator (open access)

Cultivator

Patent for improvements to a new cultivator which eliminate side drafting and improving the means of cultivating and adjusting the shovels with ease.
Date: April 2, 1918
Creator: Ashley, John F.
Object Type: Patent
System: The Portal to Texas History
Cultivator. (open access)

Cultivator.

Patent for a cultivator attachment that adjusts the beams to various distances apart.
Date: October 28, 1919
Creator: Kubenka, Otto E. & Janszen, August W.
Object Type: Patent
System: The Portal to Texas History
Fuel Rod Coupling (open access)

Fuel Rod Coupling

Patent for a new type of fuel rod coupling, or "sucker rod," meant to increase the durability of pipes and rods used in drilling operations.
Date: June 3, 1919
Creator: Sheldon, W. J. & Allen, C. H.
Object Type: Patent
System: The Portal to Texas History
Cut-Out Device for Windmills. (open access)

Cut-Out Device for Windmills.

Patent for "an improved attachment for wind mills, whereby the mill may be thrown out of gear automatically when the supply tank becomes filled" (lines 9-13). It includes an illustration and description of the components.
Date: June 25, 1918
Creator: Pennington, Phil M.
Object Type: Patent
System: The Portal to Texas History
Fuel-Supply Apparatus. (open access)

Fuel-Supply Apparatus.

Patent for an improved fuel supply apparatus for liquid fuel.
Date: July 5, 1919
Creator: Guthrie, William S.
Object Type: Patent
System: The Portal to Texas History
Crank-Axle Adjustment. (open access)

Crank-Axle Adjustment.

Patent for a crank axle adjustment "to simplify and produce and efficient crank axle that will efficiently perform its function in connection with the general structure of a plow or cultivator." (lines 13-17)
Date: June 15, 1920
Creator: Kopplin, Otto E.
Object Type: Patent
System: The Portal to Texas History
Texas Travel Handbook (open access)

Texas Travel Handbook

Guide to assist tourists in Texas: "Attractions and points of interest are listed under the city name where they are located; city names are arranged in alphabetical order. Information on Texas State Parks, National Forests, Hunting and Fishing, Entering and Leaving Mexico, and other general subjects will be found at the end of this book" (p. 2).
Date: 1991~
Creator: Texas. Travel and Information Division.
Object Type: Book
System: The Portal to Texas History
Flood-Fence. (open access)

Flood-Fence.

Patent for a flood fence dedicated in cases of high water, preventing the fence from destruction. This fence is cheap to manufacture and requires a simple construction.
Date: March 1, 1887
Creator: Sims, Abner Z.
Object Type: Patent
System: The Portal to Texas History
University of North Texas Alumni Directory, 1984

University of North Texas Alumni Directory, 1984

Directory containing alphabetical and geographic lists of all known alumni of University of North Texas through February 1984. Married women are listed with their maiden names in parentheses.
Date: 1984
Creator: University of North Texas
Object Type: Book
System: The Portal to Texas History
Dynamic Corrosion Screening Tests on Inconel and Nickel in NaCl-MgCl2-UCl3 Bath (open access)

Dynamic Corrosion Screening Tests on Inconel and Nickel in NaCl-MgCl2-UCl3 Bath

Nickel is more susceptible to mass transfer in a 100hr non-isothermal dynamic corrosion system than is Inconel when exposed to a NaCl-MgCl2-UCl3 (50.0-33.3-16.0 mole %) bath at a hot zone temperature 1800 F. No nickel mass transfer was observed in a 500-hr test at 1350 F, but Inconel showed some attack under these conditions. Inconel mass transfer was observed in both tests, being more severe at the higher temperature. On the bases of these preliminary tests, it appears that nickel is a more satisfactory container than Inconel for the chloride bath at temperatures in the region of 1350 F. The chromium is more susceptible to selective leaching from Inconel at 1800 F during a short 100-hr test (0.26% Cr in bath) than in a 500-hr test (<0.001% Cr in bath) at a lower temperature (1350 F ).
Date: June 19, 1957
Creator: Jansen, D. H.
Object Type: Report
System: The UNT Digital Library
Trip to Selas Corporation of America (open access)

Trip to Selas Corporation of America

On May 23, 1957, a visit was made by the writer to the Selas Corporation of American in Dresher, Pennsylvania. The purpose of the visit was to discuss further investigations into methods of tubesheet brazing by direct heating. Original work along these lines has been carried out at ORNL and is covered by a memo (CF-57-4-57) to W.D. Manly, dated April 16, 1957, and entitled : Investigation of Tubesheet Brazing by a Method of Direct Heating.
Date: June 18, 1957
Creator: Franco-Ferreira, E. A.
Object Type: Report
System: The UNT Digital Library
Fused Salt Compositions (open access)

Fused Salt Compositions

The compositions of the compounds and fused salt mixtures referred to in the ANP project by numbers are given.
Date: June 20, 1957
Creator: Barton, C. J.
Object Type: Report
System: The UNT Digital Library
The Volatilization of Fission Products by Melting of Reactor Fuel Plates (open access)

The Volatilization of Fission Products by Melting of Reactor Fuel Plates

Experiments in the controlled melting of irradiated fuel specimens, particularly of the APPR, STR, and MTR types have confirmed that prolonged heating in air at temperatures in excess of the melting point results in the release of a large portion of the radioactivity. On the other hand, a moderate amount of heating in air or steam sufficient only to melt a specimen results mainly in the partial volatilization of the rare gases; the halogens, iodine and bromine; and the alkali metals, cesium and rubidium. In the presence of air or water vapor, strontium and other fission products are not released. At trace concentration of fission products, slow melting of the APPR plate at 1525 C in air or steam effected the release of 50 percent of the rare gases, 33 percent of the iodine, 9 percent of the cesium and traces of strontium. After 25% burn-up, the cesium value increased to about 60 percent. Aluminum alloy of the MTR type, also at trace concentration, upon melting at 700 C released up to 2 percent of the iodine, 10 percent of the rare gases, and negligible portions of other fission products. Zirconium alloy of the STR type after 15 percent burn …
Date: July 15, 1957
Creator: Parker, Geogre W. & Creek, George E.
Object Type: Report
System: The UNT Digital Library
Experiments on the Release of Fission Products from Molten Reactor Fuels (open access)

Experiments on the Release of Fission Products from Molten Reactor Fuels

Experiments in the controlled melting of irradiated fuel specimens, particularly of the APPR, STR, and MTR types, have confirmed that prolonged heating in air at temperatures in excess of the melting point results in the release of a large portion of the radioactivity. On the other hand, a moderate amount of heating in air or steam sufficient only to melt a specimen results mainly in the partial volatilization of rare gases, iodine, bromine, cesium, and rubidium. In the presence of air or water vapor, strontium and other fission products are not released. At trace concentration of fission products, slow melting of the APPR plate at 1525 C in air or steam effected the release of 50% of the rare gases, 33% of the iodine, 9% of the cesium, and traces of strontium. After 25% burn-up, the cesium value increased to about 60%. Aluminum alloy of the MTR type, also at trace concentration, upon melting at 700 C released up to 2% of the iodine, 10% of the rare gases, and negligible portions of other fission products. Zirconium alloy of the STR type after 15% burn-up, when melted at 1850 C, released up to 95% of the rare gases, 90% of …
Date: March 11, 1958
Creator: Parker, George W. & Creek, George E.
Object Type: Report
System: The UNT Digital Library
Determination of Trace Amounts of Sulfur in Fluoride Salts (open access)

Determination of Trace Amounts of Sulfur in Fluoride Salts

A method has been developed for the determination of total sulfur in fluoride salts using the methylene blue procedure. Reduction of sulfate to hydrogen sulfide is achieved through the use of a new reducing mixture consisting of stannous chloride dissolved in concentrated phosphoric acid. The new mixture is effective on microgram amounts of sulfate and offers a major advantage over the red phosphorous reducing mixtures in that larger samples may be taken for analysis. The procedure has been applied to fluoride salts containing from 1 to 500 ppm of sulfur. The coefficient of variation the method is 10 percent.
Date: June 24, 1957
Creator: Gilbert, T. W. & White, J. C.
Object Type: Report
System: The UNT Digital Library