Resource Type

Catalysts for Conversion of Methane to Higher Hydrocarbons (open access)

Catalysts for Conversion of Methane to Higher Hydrocarbons

Catalysts for converting methane to higher hydrocarbons such as ethane and ethylene in the presence of oxygen at temperatures in the range of about 700 to 900{degrees}C are described. These catalysts comprise calcium oxide or gadolinium oxide respectively promoted with about 0.025--0.4 mole and about 0.1--0.7 mole sodium pyrophosphate. A preferred reaction temperature in a range of about 800 to 850{degrees}C with a preferred oxygen-to-methane ratio of about 2:1 provides an essentially constant C{sub 2} hydrocarbon yield in the range of about 12 to 19 percent over a period of time greater than about 20 hours.
Date: May 15, 1991
Creator: Siriwardane, Ranjani V.
System: The UNT Digital Library
Cavity resonance absorption in ultra-high bandwidth CRT deflection structure (open access)

Cavity resonance absorption in ultra-high bandwidth CRT deflection structure

An improved ultra-high bandwidth helical coil deflection structure for a cathode ray tube is described comprising a first metal member having a bore therein, the metal walls of which form a first ground plane; a second metal member coaxially mounted in the bore of the first metal member and forming a second ground plane; a helical deflection coil coaxially mounted within the bore between the two ground planes; and a resistive load disposed in one end of the bore and electrically connected to the first and second ground planes, the resistive load having an impedance substantially equal to the characteristic impedance of the coaxial line formed by the two coaxial ground planes to inhibit cavity resonance in the structure within the ultra-high bandwidth of operation. Preferably, the resistive load comprises a carbon film on a surface of an end plug in one end of the bore.
Date: May 15, 1991
Creator: Dunham, M. E. & Hudson, C. L.
System: The UNT Digital Library
Battery (open access)

Battery

Patent for an improvement on batteries. Meant to increase insulation and plate stability inside the battery.
Date: May 15, 1918
Creator: Pipkin, Maurice E.
System: The Portal to Texas History
Amusement Device. (open access)

Amusement Device.

Patent for an invention relating to the amusement device. Advantages and illustrations of the invention and amusement device are included.
Date: May 15, 1917
Creator: Moore, Charles L.
System: The Portal to Texas History
Attachment for Cameras. (open access)

Attachment for Cameras.

Patent for an improved camera attachment for adding titles to film that prevents the film from being exposed to light except when the title is photographed, with illustrations.
Date: May 15, 1917
Creator: Bretz, George W.; Lowry, Claud A.; Wood, Oscar O.; Wade, J. H.; Pirtle, P. R.; Jones, F. E. et al.
System: The Portal to Texas History
Automobile-Fender (open access)

Automobile-Fender

Patent for automobile fenders to provide a fender that can be used in conjunction with various types of motor vehicles and "prevent a person from being run over by the vehicle equipped with the fender" (lines 13-14).
Date: May 15, 1917
Creator: Uribe, Marcelino
System: The Portal to Texas History
Automobile Wheel. (open access)

Automobile Wheel.

Patent for improvements and a cushion to steering wheels of automobiles to provide better grip and comfort, including illustrations.
Date: May 15, 1917
Creator: Dominguez, Salvador
System: The Portal to Texas History
Drafting-Tool. (open access)

Drafting-Tool.

Patent for a drafting ruler that does not need to be turned end over end to be used.
Date: May 15, 1917
Creator: Faas, Walter
System: The Portal to Texas History
Firing-Valve to Control the Feed of Oil in Firing Oil-Burning Locomotives. (open access)

Firing-Valve to Control the Feed of Oil in Firing Oil-Burning Locomotives.

Patent for valve changes that "provide a valve operating means whereby the valve may be very finely adjusted and prevented from being casually turned" (lines 16-18).
Date: May 15, 1917
Creator: Gilman, Benoist P.
System: The Portal to Texas History
Matrix Molding Device (open access)

Matrix Molding Device

Patent for invention relating to the matrix molding device that is used in linotype or intertype or linecasting machines for molding printers' slugs. This invention is to provide devices by which type high printing slugs can be molded with printing surfaces of various designs.
Date: May 15, 1917
Creator: Markwell, Andrew E.
System: The Portal to Texas History
Matrix Molding Device (open access)

Matrix Molding Device

Patent for matrix molding devices can be use in linotype or intertype or line casting machines for molding printers' slugs.
Date: May 15, 1917
Creator: Markwell, Andrew E.
System: The Portal to Texas History
Peanut Digger. (open access)

Peanut Digger.

Patent for new and useful improvements to a machine for harvesting or digging peanuts, including instructions and illustrations.
Date: May 15, 1917
Creator: Amos, Thomas E. & Abernathy, George J.
System: The Portal to Texas History
Riveting-Machine. (open access)

Riveting-Machine.

Patent for improvements on a riveting machine that includes a moveable anvil and a clenching hammer and also increases strength, durability, and efficiency of the machine.
Date: May 15, 1917
Creator: Norris, Henry O.
System: The Portal to Texas History
Safety Device for Elevators. (open access)

Safety Device for Elevators.

Patent for an improved elevator safety device that engages the brakes should the cable break or engine become inoperable to bring the elevator to a gradual stop, with illustrations.
Date: May 15, 1917
Creator: Davis, John L.
System: The Portal to Texas History
Storage Bin (open access)

Storage Bin

Patent for Storage Bin. This device is a container which seeks to control the temperature of vegetables in storage bins.
Date: May 15, 1917
Creator: Stoker, Mack Daniel
System: The Portal to Texas History
Trolley-Harp. (open access)

Trolley-Harp.

Patent for improvements to the efficiency of trolley harps by changing how the currents that power "overhead type electric car systems" (lines 13-14) are conducted.
Date: May 15, 1917
Creator: Carmack, James H.
System: The Portal to Texas History
Rotary Boring-Drill. (open access)

Rotary Boring-Drill.

Patent for improvements to rotary boring drills.
Date: May 15, 1915
Creator: Hughes, Howard R.
System: The Portal to Texas History
Apparatus for Manufacturing Carbureted Gas (open access)

Apparatus for Manufacturing Carbureted Gas

Patent for an apparatus that manufactures gas for illuminating and heat generating purposes, including instructions.
Date: May 15, 1911
Creator: Watkins, William J.
System: The Portal to Texas History
Baling Press (open access)

Baling Press

Patent for a baling press. Illustration included.
Date: May 15, 1906
Creator: Struve, Clemens A.
System: The Portal to Texas History
Combined Pipe Clamp And Wrench (open access)

Combined Pipe Clamp And Wrench

Patent for a combined pipe clamp and wrench. Illustration included.
Date: May 15, 1906
Creator: Harris, John Wesley
System: The Portal to Texas History
Combined Separator and Bagging Device for Grain (open access)

Combined Separator and Bagging Device for Grain

Patent for a thresher attachment that uses a suction fan to separate grain from lighter materials and allows the grain to be collected in a bag or other container.
Date: May 15, 1906
Creator: Henninger, Thomas C.
System: The Portal to Texas History
Cot-Canopy (open access)

Cot-Canopy

Patent for a cot with a surrounding canopy that is designed to keep insects away from the user.
Date: May 15, 1906
Creator: Kerridge, Isaac Curtis
System: The Portal to Texas History
Fence-Stay. (open access)

Fence-Stay.

Patent for a fence stay that can be put on without any special tools. The stay also forms a clamp in itself and does not require any other tie to keep it in place.
Date: May 15, 1906
Creator: Horsley, Robert L.
System: The Portal to Texas History
Measure (open access)

Measure

Patent for a measure. Illustration included.
Date: May 15, 1906
Creator: Turpin, Thomas L.
System: The Portal to Texas History