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Fabrication of Photonic band gap Materials
A method for forming a periodic dielectric structure exhibiting photonic band gap effects includes forming a slurry of a nano-crystalline ceramic dielectric or semiconductor material and monodisperse polymer microsphere, depositing a film of the slurry on a substrate, drying the film, and calcining the film to remove the polymer microsphere there from. The film may be cold-pressed after drying and prior to calcining. The ceramic dielectric or semiconductor material may be titania, and the polymer microsphere may be polystyrenemicrosphere.
Date:
January 5, 2000
Creator:
Constant, Kristen; Subramania, Ganapathi S.; Biswas, Rana & Ho, Kai-Ming
System:
The UNT Digital Library
Punch
Patent for punch. Intent of patent is to provide a more stable way of connecting a punching tool mechanism to a reciprocating shaft.
Date:
January 5, 1920
Creator:
Doolittle, John F
System:
The Portal to Texas History
Adding-Machine
Patent for improvements to adding machines, which is key-operated and includes a vertically disposed shaft and a means to actuate the sliding plate.
Date:
January 5, 1915
Creator:
Gatewood, William F.
System:
The Portal to Texas History
Ax-Sharpener
Patent for an ax sharpener that can be attached to and removed from an ax head.
Date:
January 5, 1915
Creator:
Wilson, Friend A.
System:
The Portal to Texas History
Bag-Mouth-Spreading Device
Patent for a device which holds open the mouth of a bag or sack so that it can be easily filled. The device works with bags hung on a post or with bags hung from the shoulder, as a cotton picker's sack.
Date:
January 5, 1915
Creator:
Willoughby, Alfred Pervis
System:
The Portal to Texas History
Bale-Tie Buckle
Patent for a bale-tie buckle which can be fastened quickly. The bale-tie buckle "can be economically manufactured," is "capable of resisting enormous pressure," and "can be quickly and easily placed on the bands or ties."
Date:
January 5, 1915
Creator:
Horsley, Robert L.
System:
The Portal to Texas History
Boll Breaking Machine.
Patent for new and useful improvements in Boll-Breaking machines.
Date:
January 5, 1915
Creator:
Bradford, McDuffee
System:
The Portal to Texas History
Cotton-Gin
Patent for improvements that may be added to a cotton gin to facilitate the removal of lint from the saw through the use of air suction, increasing ginning efficiency.
Date:
January 5, 1915
Creator:
Wooldridge, John
System:
The Portal to Texas History
Garden-Hose Holder
Patent for a garden hose holder that "will support the nozzle or discharge end of a garden hose" at adjustable heights and directions. The patent allows for the "stream of water [to be] directed from the hose in any desired direction and at any angle relative to the ground."
Date:
January 5, 1915
Creator:
Leslie, Lee B. & Feuerbacher, Max E.
System:
The Portal to Texas History
Grading Device for Seed.
Patent for a new and improved grading device for seed.
Date:
January 5, 1915
Creator:
Leach, William Logan
System:
The Portal to Texas History
Improvement in Automatic Brake-Setting Mechanism for Pneumatic Brakes.
Patent for improvements in pneumatic brakes with simple construction for higher efficiency in trains including instructions and illustrations.
Date:
January 5, 1915
Creator:
Weldon, Robert J.
System:
The Portal to Texas History
Improvement in Clasps.
Patent for improvement in clasps "especially adapted for garment supporting" (lines 9-10) including instructions and illustrations.
Date:
January 5, 1915
Creator:
Stafford, Beverly F.
System:
The Portal to Texas History
Improvement in Cotton-Choppers.
Patent for "a device that will chop cotton mechanically" (line 10-11) and require less labor including instructions and illustrations.
Date:
January 5, 1915
Creator:
Crum, Martin A.
System:
The Portal to Texas History
Improvement in Cotton Pickers.
Patent for improvements in cotton pickers which require less labor than manual efforts.
Date:
January 5, 1915
Creator:
Scheble, Eugene S.
System:
The Portal to Texas History
Low-Water Alarm For Boilers
Patent for "improvements in low water alarms for steam boilers and more particularly to those which are operated by the heat from the steam in the boiler, after the water therein has fallen below a predetermined danger point" (lines 15-20).
Date:
January 5, 1915
Creator:
Anderson, Williamson D. & Shearer, Edward J.
System:
The Portal to Texas History
Plow.
Patent for "heel sweeps" for plows, which are a construction of wings that that sweep the furrow on either side of the plow.
Date:
January 5, 1915
Creator:
Randolph, James W.
System:
The Portal to Texas History
Process of Hyrdogenating Fats, Oils and Waxes
Patent for introducing hydrogen and a catalyst in order to convert oils, fats, and waxes into substances of higher melting points.
Date:
January 5, 1915
Creator:
Walker, Thomas Bailey
System:
The Portal to Texas History
Rotary Boring-Drill.
Patent for new and useful improvement for rotary boring-drills that are used for drilling wells.
Date:
January 5, 1915
Creator:
Hughes, Howard R.
System:
The Portal to Texas History
Rotary Boring-Drill
Patent for a simply constructed rotary drill suitable for drilling wells in soft formations such as shale.
Date:
January 5, 1915
Creator:
Hughes, Howard R.
System:
The Portal to Texas History
Single-Disk Drill
Patent for a single disk drill for drilling into soft materials ("gumbo, shale, hard clay, and soft rock") without clogging.
Date:
January 5, 1915
Creator:
Hughes, Howard R.
System:
The Portal to Texas History
Transmission Gear Shifting Device.
Patent for a new transmission gear shifting device will "provide means for shifting the transmission parts of an automobile or other motor driven vehicle, without employing the usual hand levers and appliances, and to do so by means of electrically controlled operating mechanisms in combination with certain component parts." (Lines 12-18) including illustrations.
Date:
January 5, 1915
Creator:
De Witt, G.
System:
The Portal to Texas History
Adjustable Trace Connector
Patent for an adjustable trace connector. Illustration included.
Date:
January 5, 1909
Creator:
Erwin, Agustin Reese; Burks, William D. & Burks, Joseph B.
System:
The Portal to Texas History
Churn
Patent for a churn designed for churning butter in smaller quantities and preventing foreign objects from entering. Illustrations included.
Date:
January 5, 1909
Creator:
Bland, William W.
System:
The Portal to Texas History
Mail-Catcher
Patent for a mail catcher that obtains mail placed beside the road and automatically carries it to the door of the car. Illustrations included.
Date:
January 5, 1909
Creator:
Wehling, Henry C.
System:
The Portal to Texas History