Partner
Oklahoma Historical Society
392
UNT Libraries Special Collections
233
UNT Libraries Government Documents Department
32
Sterling Municipal Library
10
Deaf Smith County Library
9
Carl Albert Congressional Research and Studies Center
8
Hopkins County Genealogical Society
7
Red River County Public Library
7
Leonard Public Library
6
Texas Historical Commission
6
67 More
Collection
Oklahoma Publishing Company Photography Collection
296
KXAS-NBC 5 News Collection
218
Texas Digital Newspaper Program
169
Oklahoma Digital Newspaper Program
106
Tocker Foundation Grant
85
The Oklahoma City Times
18
Office of Scientific & Technical Information Technical Reports
17
Altus Times-Democrat
12
Chickasha Newspaper Collection
12
Ladd & Katherine Hancher Library Foundation
12
112 More
Country
Year
Month
Day
Language
Results:
1 - 24 of
847
next
Plasma channel optical-pumping device and method
A device and method are described for optically pumping a gaseous laser using blackbody radiation produced by a plasma channel which is formed from an electrical discharge between two electrodes spaced at opposite longitudinal ends of the laser. A preionization device which can comprise a laser or electron beam accelerator produces a preionization beam which is sufficient to cause an elctrical discharge between the electrodes to initiate the plasma channel along the preionization path. The optical pumping energy is supplied by a high voltage power supply rather than by the preionization beam. High output optical intensities are produced by the laser due to the high temperature black-body radiation produced by the plasma channel, in the same manner as an exploding wire type laser. However, unlike the exploding wire type laser, the disclosed invention can be operated in a repetitive manner by utilizing a repetitive pulsed preionization device.
Date:
July 17, 1981
Creator:
Judd, O.P.
Object Type:
Patent
System:
The UNT Digital Library
Control system for a wound-rotor motor
A load switching circuit for switching two or more transformer taps under load carrying conditions includes first and second parallel connected bridge rectifier circuits which control the selective connection of a direct current load to taps of a transformer. The first bridge circuit is normally conducting so that the load is connected to a first tap through the first bridge circuit. To transfer the load to the second tap, a switch is operable to connect the second bridge circuit to a second tap, and when the second bridge circuit begins to conduct, the first bridge circuit ceases conduction because the potential at the second tap is higher than the potential at the first tap, and the load is thus connected to the second tap through the second bridge circuit. The load switching circuit is applicable in a motor speed controller for a wound-rotor motor for effecting tap switching as a function of motor speed while providing a stepless motor speed control characteristics.
Date:
July 17, 1981
Creator:
Ellis, James N.
Object Type:
Patent
System:
The UNT Digital Library
Continuous chain bit with downhole cycling capability
A continuous chain bit for hard rock drilling is disclosed which is capable of downhole cycling. A drill head assembly moves axially relative to a support body while the chain on the head assembly is held in position so that the bodily movement of the chain cycles the chain to present new composite links for drilling. A pair of spring fingers on opposite sides of the chain hold the chain against movement. The chain is held in tension by a spring-biased tensioning bar. A head at the working end of the chain supports the working links. The chain is centered by a reversing pawl and piston actuated by the pressure of the drilling mud. Detent pins lock the head assembly with respect to the support body and are also operated by the drilling mud pressure. A restricted nozzle with a divergent outlet sprays drilling mud into the cavity to remove debris. Indication of the centered position of the chain is provided by noting a low pressure reading indicating proper alignment of drilling mud slots on the links with the corresponding feed branches.
Date:
March 17, 1981
Creator:
Ritter, D. F.; St. Clair, J. A. & Togami, H. K.
Object Type:
Patent
System:
The UNT Digital Library
[Photograph 2012.201.B0052.0726]
Photograph taken for a story in the Oklahoma City Times newspaper. Caption: "Rescuers work to remove Larry Priebe, 50, from his truck after an accident on S I-240 this morning."
Date:
June 17, 1981
Creator:
Buehner, Jeff
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0073.0392]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Bacone's Bill Ford (21) battles Oklahoma City Southwestern's Brian Christenson for a loose ball during Saturday night's game at Southwestern.. The Eagles whipped Bacone 107-84.."
Date:
January 17, 1981
Creator:
Lynn, Renee
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0107.0423]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Robert Brinks at his Harrison-Walnut home in the 400 block of NE 11."
Date:
September 17, 1981
Creator:
Buehner, Jeff
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0111.0615]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Sharon Brown and Lisa "the weasel" Ezell slug it out during their match in the tough girl contest at the Myrad"
Date:
November 17, 1981
Creator:
McDaniel, David
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0147.0559]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
February 17, 1981
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0144.0247]
Photograph used for a story in the Daily Oklahoman newspaper.
Date:
March 17, 1981
Creator:
Hoke, Doug
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0152.0923]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Kaci D'Amato, right, looks on as John Erick Munneke, center, gives Ginny Geis, a kiss during a musical presentation by a local school at Britton Christian Church."
Date:
December 17, 1981
Creator:
Lynn, Renee
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0151.0169]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "Bill Curry, director of the Oklahoma chapter of American Ex-Prisoners of War, keeps watch at a garage sale."
Date:
October 17, 1981
Creator:
Longstreath, David
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0172.0297]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Big step for Edmond's female firefighter."
Date:
November 17, 1981
Creator:
Merrim, Dan
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0171.0699]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "Urged on by the encouraging words of parents behind and a field full of eggs in front of them, 5-year-olds get ready to head out no the State Capitol grounds in search of Easter treats."
Date:
April 17, 1981
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0166.0043]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Pamela Doonkeen, left, and sister Kellie Steakel try to open an antique piggy bank purchased at the arts fair."
Date:
July 17, 1981
Creator:
Albright, Bob
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0147.0428]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "After drilling holes in seashells, Kim Craft and Leslie Daughtery paint the shells."
Date:
November 17, 1981
Creator:
Southerland, Paul
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0141.0358]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "On Job Training -- Getting 'hands on' experience with repairing small engines are Oklahoma City public school counselors Evonne Salone and Ken Kappen, right, both from Capitol Hill High School. The instructor at Foster Estes Vocational Technical Center is Pat Connor. The city high school counselors are taking special Vo-Tech courses this summer to gain knowledge of what courses the Vo-Tech school has to offer."
Date:
June 17, 1981
Creator:
Albright, Bob
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0140.0300]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "A Tinker Air Force Base color guard folds the flag during ceremonies Friday in observance of America's prisoners of war and those men still listed as missing in action."
Date:
July 17, 1981
Creator:
Wilson, George R.
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0144.0322]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "The countries south of the U.S. border are of tremendous strategic importance to the United States, but often have been "taken for granted."
Date:
October 17, 1981
Creator:
McDaniel, David
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0140.0299]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "A Tinker Air Base color guard raises the American flag Friday afternoon during a short memorial for American prisoners of war and soldiers that are listed as missing in action."
Date:
July 17, 1981
Creator:
Wilson, George R.
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0350.0353]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "The stolen getaway car used by the four suspects was found with a flat tire in this apartment complex parking lot in the 6200 block of N. Meridian."
Date:
November 17, 1981
Creator:
Beuhner, Jeff
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Coal gasification vessel. [Patent application]
A vessel system comprises an outer shell of carbon fibers held in a binder, a coolant circulation mechanism and control mechanism and an inner shell comprised of a refractory material and is of light weight and capable of withstanding the extreme temperature and pressure environment of, for example, a coal gasification process. The control mechanism can be computer controlled and can be used to monitor and modulate the coolant which is provided through the circulation mechanism for cooling and protecting the carbon fiber and outer shell. The control mechanism is also used to locate any isolated hot spots which may occur through the local disintegration of the inner refractory shell.
Date:
March 17, 1981
Creator:
Loo, Billy W.
Object Type:
Patent
System:
The UNT Digital Library
[Photograph 2012.201.B0304B.0130]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Mrs. Carl Johnson, assistant helps put up the Circa Antiques display at the grater Oklahoma City Antique Show held recently at Lincoln Plaza."
Date:
September 17, 1981
Creator:
Lynn, Renee
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0253.0127]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "D. E. Jones handles the backhoe while Larry Haws looks on."
Date:
January 17, 1981
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0228.0494]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "Mike Green"
Date:
December 17, 1981
Creator:
McDaniel, David
Object Type:
Photograph
System:
The Gateway to Oklahoma History