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1,474 Matching Results
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Blank for Making Perforated Tubing
Patent for a blank for the manufacturing of well tubing used in water and oil wells.
Date:
February 18, 1913
Creator:
Layne, Mahlon E.
System:
The Portal to Texas History
Controller Attachment for Levers
Patent for improvements on controllers for levers
Date:
February 6, 1912
Creator:
Smith, David C.
System:
The Portal to Texas History
Acetylene-Gas Generator.
Patent for certain new and useful improvement sin acetylene gas generators, including instructions and illustrations.
Date:
February 20, 1900
Creator:
Pitts, William Wirt
System:
The Portal to Texas History
Aparejo
Patent for more efficient and durable pack-saddle (aparejo) used by United States Army. Casing involves hollow boot-sticks and rubber-encased steel, with better fitting to prevent fatigue of animal.
Date:
February 11, 1902
Creator:
Keller, John & Titsworth, Richard
System:
The Portal to Texas History
Corn-Thinner.
Patent for improvements in corn-thinners for removing excess stalks in the field by constructing the “upper portion’s blade flat to present straight side cutting edges, and having the lower portion curved transversely to present to a lower semicircular cutting edge.” (Lines 53-56.) With this design, the operator would not have to stoop over, making the thinning operation easier. Illustration is included.
Date:
February 17, 1903
Creator:
Horn, Henry G.
System:
The Portal to Texas History
Baling-Press
Patent for a baling press which uses less power to press hay the same tightness as current baling presses.
Date:
February 8, 1910
Creator:
Smith, Ernest D.
System:
The Portal to Texas History
Cattle-Guard.
Patent for a cattle guard for railroad tracks, which is activated by the pressure of a cow stepping on its platform and raises bars to block the the cow from crossing the track. It goes back down automatically when the pressure is removed off the platform.
Date:
February 2, 1909
Creator:
Crouch, Jim L.
System:
The Portal to Texas History
Churn.
Patent for a churn that is easy to use and efficient.
Date:
February 8, 1910
Creator:
Huggins, Thompson A.
System:
The Portal to Texas History
Acetylene Gas Generator
Patent for acetylene gas generator. Illustration included.
Date:
February 28, 1905
Creator:
Gribble, William A.
System:
The Portal to Texas History
Air-Brake
Patent for an air brake for trains that reduces jerking when the brakes are applied.
Date:
February 6, 1912
Creator:
Mead, William E.
System:
The Portal to Texas History
Brace For Heel Sweeps
Patent for a brace to be used with the class of agricultural implements known as 'heelsweeps'. Illustration included.
Date:
February 12, 1907
Creator:
Ingram, John H.
System:
The Portal to Texas History
Baling-Press.
Patent for "new and useful Improvements in Baling-Presses." (line 6-7) including instructions and illustrations.
Date:
February 20, 1906
Creator:
Abbot, Thomas & Abbot, Harry B.
System:
The Portal to Texas History
Combined Music-Rack and Front Panel for Pianos
Patent for a music rack and front panel for pianos. Illustrations included.
Date:
February 22, 1910
Creator:
Norcross, Levi Watson
System:
The Portal to Texas History
Churn
Patent for a churn. Illustration included.
Date:
May 10, 1910
Creator:
Hopkins, Samuel M.
System:
The Portal to Texas History
Combination coat and pants hanger.
Patent for a combined coat and trousers hanger that is formed strongly of wire to maintain its shape and durability, including instructions and illustrations.
Date:
February 20, 1912
Creator:
Collier, Frank A.
System:
The Portal to Texas History
Automatic Fire Alarm
Patent for an automatic fire alarm. Illustration included.
Date:
August 10, 1905
Creator:
Suttle, Willis A.
System:
The Portal to Texas History
Method of sputter etching a surface
A surface is textured by co-sputter etching with a target and a seed material with the surface at a pre-selected temperature. By pre-selecting the temperature of the surface while sputter etching, it is possible to predetermine the reflectance properties of the etched surface. The surface may be textured to absorb sunlight efficiently and have minimal emittance in the infrared region so as to be well-suited for use as a solar absorber for photothermal energy conversion.
Date:
February 26, 1982
Creator:
Henager, C.H. Jr.
System:
The UNT Digital Library
Process for the production of ethylene and other hydrocarbons from coal
A process is claimed for the production of substantial amounts of ethylene and other hydrocarbon compounds, such as benzene from coal. Coal is reacted with methane at a temperature in the approximate range of 500/sup 0/C to 1100/sup 0/C at a partial pressure less than about 200 psig for a period of less than 10 seconds, and preferably at a temperature of approximately 850/sup 0/C, and a partial pressure of 50 psig for a period of approximately 2 seconds. Ethylene and other hydrocarbon compounds may be separated from the product stream so produced, and the methane recycled for further production of ethylene. In another embodiment, other compounds produced, such as by-product tars, may be burned to heat the recycled methane.
Date:
February 16, 1982
Creator:
Steinberg, M. & Fallon, P.
System:
The UNT Digital Library
New prodrugs based on phospholipid-nucleoside conjugates
A method is described for the preparation of defined, isomerically pure phospholipid-nucleoside conjugates as a prodrug in which the drug (araC) is attached to the phospholipid by a monophosphate linkage. Key intermediates in the process involve selective blocking and deblocking of the nucleoside derivative. These particular monophosphate-linked derivatives represent a new class of prodrug, which are useful by themselves or in combination with diphosphate linked derivatives. Several new compositions involving diphosphate linked derivatives are described in which the products are isomerically pure and having defined fatty acid chain lengths.
Date:
February 3, 1982
Creator:
MacCoss, M.
System:
The UNT Digital Library
Electric filter with movable belt electrode
A method and apparatus are disclosed for removing airborne contaminants entrained in a gas or airstream. The apparatus includes an electric filter characterized by a movable endless belt electrode, a grounded electrode, and a filter medium sandwiched therebetween. Inclusion of the movable, endless belt electrode provides the driving force for advancing the filter medium through the filter, and reduces frictional drag on the filter medium, thereby permitting a wide choice of filter medium materials. Additionally, the belt electrode includes a plurality of pleats in order to provide maximum surface area on which to collect airborne contaminants.
Date:
February 23, 1982
Creator:
Bergman, W.
System:
The UNT Digital Library
Front-lighted shadowgraphic method and apparatus
High contrast silhouette images of a substantially opaque object are obtained using front illumination techniques. The object is frontally illuminated by light of a first polarization. A frontal surface of the object reflects the incident light to an observation station. The polarization of incident light bypassing the object and incident on a background is changed. The background light is reflected to the observation station, and the intensity of one of the two, differently polarized, reflected images is substantially reduced with respect to the other. Apparatus for carrying out the method includes a first polarizer for polarizing frontally incident illuminating light, a second polarizer behind the object and a reflective surface behind the second polarizer. A polarization analyzer, located in front of the object, is used to extinguish one of the two reflected images. Apparatus for carrying out the invention in instruments having a polarized light source and a polarization analyzer includes a combination of a polarizing material, for contacting a rear surface of the object, and a reflective surface provided adjacent the rear surface of the polarizing material. The combination is applied to the rear surface of the object. Back-surface mirrors of pleochroic substrates, applied to thin film physical vapor-deposited …
Date:
February 11, 1982
Creator:
unknown
System:
The UNT Digital Library
Stabilizing windings for tilting and shifting modes
This invention provides simple, inexpensive, independent and passive, conducting loops for stabilizing a plasma ring having externally produced equilibrium fields on opposite sides of the plasma ring and internal plasma currents that interact to tilt and/or shift the plasma ring relative to the externally produced equilibrium field so as to produce unstable tilting and/or shifting modes in the plasma ring. More particularly this invention provides first and second passive conducting loops for containing first and second induced currents in first and second directions corresponding to the amplitude and directions of the unstable tilting and/or shifting modes in the plasma ring. To this end, the induced currents provide additional magnetic fields for producing restoring forces and/or restoring torques for counteracting the tilting and/or shifting modes when the conducting loops are held fixed in stationary positions relative to the externally produced equilibrium fields on opposite sides of the plasma ring.
Date:
February 26, 1982
Creator:
Jardin, S. C. & Christensen, U. R.
System:
The UNT Digital Library
Bag-out material handling system
A bagging device for transferring material from a first chamber through an opening in a wall to a second chamber includes an outer housing communicating with the opening and having proximal and distal ends relative to the wall. An inner housing having proximal and distal ends corresponding to those of the outer housing is mounted in a concentrically spaced, sealed manner with respect to the distal end of the outer housing. The inner and outer housings and mounting means therebetween define an annular chamber, closed at its distal end and open at its proximal end, in which a pliable tube is slidably positioned in sealed engagement with the housings. The pliable tube includes a sealed end positioned adjacent the proximal end of the inner housing so as to maintain isolation between the first and second chambers. Displacement of the material to be bagged from the first chamber along the inner housing so as to contact the sealed portion of the pliable bag allows the material to be positioned within the pliable bag in the second chamber. The bag is then sealed and severed between where the material is positioned therein and the wall in providing a sealed container for handling …
Date:
February 26, 1982
Creator:
Brak, S.B.
System:
The UNT Digital Library
Improved eddy current angle probe
Apparatus is described for detecting flaws in a tubular workpiece in a single scan. The coils of a dual coil bobbin eddy current inspection probe are wound at a 45/sup 0/ angle to the transverse axis of the probe, one coil having an angular position about the axis about 90/sup 0/ relative to the angular position of the other coil, and the angle of intersection of the planes containing the coils being about 60/sup 0/.
Date:
February 11, 1982
Creator:
Nance, R.A.; Hartley, W.H. & Caffarel, A.J.
System:
The UNT Digital Library