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Combination free-electron and gaseous laser
A multiple laser having one or more gaseous laser stages and one or more free electron stages is described. Each of the free electron laser stages is sequentially pumped by a microwave linear accelerator. Subsequently, the electron beam is directed through a gaseous laser, in the preferred embodiment, and in an alternative embodiment, through a microwave accelerator to lower the energy level of the electron beam to pump one or more gaseous lasers. The combination laser provides high pulse repetition frequencies, on the order of 1 kHz or greater, high power capability, high efficiency, and tunability in the synchronous production of multiple beams of coherent optical radiation.
Date:
June 8, 1981
Creator:
Brau, C. A.; Rockwood, S. D. & Stein, W. E.
System:
The UNT Digital Library
Fast transient digitizer
Method and apparatus are presented for sequentially scanning a plurality of target elements with an electron scanning beam modulated in accordance with variations in a high-frequency analog signal to provide discrete analog signal samples representative of successive portions of the analog signal; coupling the discrete analog signal samples from each of the target elements to a different one of a plurality of high speed storage devices; converting the discrete analog signal samples to equivalent digital signals; and storing the digital signals in a digital memory unit for subsequent measurement or display.
Date:
July 8, 1981
Creator:
Villa, F.
System:
The UNT Digital Library
Clock Attachment.
Patent for certain new and useful improvements in clock attachments.
Date:
March 8, 1898
Creator:
Schindler, Joseph
System:
The Portal to Texas History
Collapsible Crate.
Patent for a collapsible crate for shipping berries.
Date:
October 8, 1907
Creator:
Lewis, Bennett Franklin
System:
The Portal to Texas History
Burglar-Alarm
Patent for a burglar alarm that can be attached to a car door. Illustrations included.
Date:
October 8, 1912
Creator:
Halstead, Thomas J.
System:
The Portal to Texas History
Changeable Gearing.
Patent for changeable gearing by using an axle, bevel-gears, stub-shafts and a crank-axle to construct the changeable gear, so that the “sprocket is locked to rotate with the crank-axle in one direction, while it may rotate freely of the axle in opposite direction, and, furthermore, that the sprocket may be locked to rotate with the axle or may be caused to rotate at a higher-speed than the axle.” (Lines 8-14.) Illustration is included.
Date:
January 8, 1901
Creator:
Brady, Alford
System:
The Portal to Texas History
Arm for Telegraph - Poles.
Patent for a new and useful arm for telegraph poles.
Date:
March 8, 1898
Creator:
Anderson, Lee
System:
The Portal to Texas History
Car Pooling
Patent for rail-car coupling. Illustration included.
Date:
December 8, 1903
Creator:
Carter, L. C.
System:
The Portal to Texas History
Car - Coupling
Patent for a new and useful improvements in car-couplings. This design "relates to car-couplers of the pivoted-hook type" (line 11 -12).
Date:
February 8, 1898
Creator:
Chance, Ransom M.
System:
The Portal to Texas History
Convertible Case.
Patent for certain new and useful improvements in convertible cases, including instructions and illustrations.
Date:
August 8, 1899
Creator:
Turner, Ephraim M.
System:
The Portal to Texas History
Corn and Cotton Planter
Patent for a corn and cotton planter that plants seeds in hills of equal distance from one another.
Date:
October 8, 1912
Creator:
Roy, Henry F.
System:
The Portal to Texas History
Clothes-Pin.
Patent for a clothes pin, which holds clothes without stretching them and is easily taken on and off with one press of the clamp.
Date:
March 8, 1910
Creator:
Kitts, William Caluway
System:
The Portal to Texas History
Carbureter
Patent for a carburetor to be used on internal combustion engines. Illustrations included.
Date:
February 8, 1910
Creator:
Kingsbury, William P.
System:
The Portal to Texas History
Cotton Oil Mill Seed Huller
Patent for a cotton oil mill seed huller. This invention is designed to prevent the breaking or drilling of knives by foreign matter. Illustrations included.
Date:
February 8, 1910
Creator:
Kappler, John G. & Gaines, John
System:
The Portal to Texas History
Baling Press
Patent for baling press. Illustration included.
Date:
March 8, 1904
Creator:
Robburts, George W.; Lemaster, Mike C. & Lemaster, Henry H.
System:
The Portal to Texas History
Car - Coupling.
Patent for a new and useful car coupler.
Date:
March 8, 1898
Creator:
Parks, Thomas W.
System:
The Portal to Texas History
Boiler-Flue-Cleaning Device.
Patent for certain new and useful improvements in boiler flue cleaning devices, including instructions and illustrations.
Date:
August 8, 1899
Creator:
Kitchen, George C.
System:
The Portal to Texas History
Combined Cotton Chopper and Cultivator
Patent for a combined cotton chopper and cultivator. Illustration included.
Date:
March 8, 1904
Creator:
Langford, Noah
System:
The Portal to Texas History
Combined Shade and Current Bracket Support and Shade-Guide.
Patent for a combined shade and curtain bracket support and shade guide, which makes shades roll up straight rather than catching on edges and tearing.
Date:
March 8, 1910
Creator:
Hoxworth, Edwin
System:
The Portal to Texas History
Bale-Tie.
Patent for improvements in bale-ties is to produce a “buckle-plate having a middle portion with an opening therein, arms at each end separated from the middle portion by spaces open at one side, a longitudinal entering-passage connecting the opening with one of said spaces, and a hoop the free ends of which are looped down through said opening and up through the spaces, resting upon the arms under the standing part of the hoop.” (Lines 74-83) Illustration is included.
Date:
July 8, 1902
Creator:
Johnson, William T.
System:
The Portal to Texas History
Composition of Matter for Artificial Fuel.
Patent for artificial fuel by using coals called “lignite”, grinded it and add other ingredients to it. Formula, measurements and method of mixing is included. No illustration.
Date:
December 8, 1903
Creator:
Lohmann, August
System:
The Portal to Texas History
Cotton-Chopping Machine
Patent for a cotton chopping machine. Illustrations included.
Date:
August 8, 1911
Creator:
Lynn, Walter Hugh
System:
The Portal to Texas History
Combined Baling and Compress Machine.
Patent for a combined baling and compress machine for cotton gins, which makes bales that fulfill the rules of transportation companies on cotton bale density and is cost efficient enough for small gins to purchase.
Date:
June 8, 1909
Creator:
Crow, Robert D.
System:
The Portal to Texas History
Cotton-Chopper.
Patent for a cotton chopper, which can shop two rows at the same time and performs the work faster than it can be done manually.
Date:
March 8, 1910
Creator:
Martin, Joseph W.
System:
The Portal to Texas History