Collection
Office of Scientific & Technical Information Technical Reports
300
Congressional Research Service Reports
111
Defense Base Closure and Realignment Commission
73
Technical Report Archive and Image Library
43
Texas Attorney General Opinions
39
Government Accountability Office Reports
35
National Advisory Committee for Aeronautics Collection
26
Texas Patents
24
TRAIL Microcard Collection
15
Texas State Publications
15
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655 Matching Results
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649 - 655 of
655
Paving
Patent for road paving material with cement as a base and stones or gravel used as a topping. Asphalt is poured over the gravel to extend the life of the paving.
Date:
June 24, 1913
Creator:
MacDonald, Ray
Object Type:
Patent
System:
The Portal to Texas History
Plow.
Patent for improvements in plows used for agricultural purposes with an illustration. This improvement in design is specific to "provid[ing] a plow capable of being adjusted to cause engagement thereof with the earth at varying depths" (lines 10-12).
Date:
June 24, 1919
Creator:
Marshall, Andrew Jackson
Object Type:
Patent
System:
The Portal to Texas History
Material for Lamp-Wicks.
Patent for a new and improved wick material for lamps.
Date:
June 24, 1890
Creator:
Chapin, Myron H.
Object Type:
Patent
System:
The Portal to Texas History
Cuspidor
Patent for a Cuspidor that uses an object to provide a double or reversible cuspidor constructed.
Date:
June 24, 1913
Creator:
Edwards, Henry W.
Object Type:
Patent
System:
The Portal to Texas History
Pass Book
Patent for a book cover that can be easily written on with ink.
Date:
June 24, 1914
Creator:
Roystone, W.
Object Type:
Patent
System:
The Portal to Texas History
Car Coupling.
Patent for a new and improved coupling for railroad cars. This design "consists in a car-coupling formed of two coupling-hooks pivoted on a pivot projecting from the bottom of the car, which coupling hooks pass through an inverted-V-shaped guide-slot in the guide-plate, held in front of the pivot, and the said coupling-hooks are connected with a vertically-moveable bar for raising the coupling-hooks. The coupling hooks are raised and their free ends are pressed together, and if then the coupling-hooks are released they swing downward and their free ends are separated" (lines 7-18).
Date:
June 24, 1884
Creator:
Grothaus, Frederick E.
Object Type:
Patent
System:
The Portal to Texas History
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