The Propagation of Spherical Shock Waves (open access)

The Propagation of Spherical Shock Waves

This technical report is a summary of unclassified theoretical work on propagation of one-dimensional shock waves and on the propagation of spherical shock waves in gases.
Date: May 4, 1953
Creator: Ungar, Eric E.
Object Type: Report
System: The UNT Digital Library
Texas Inmate Monthly Report: [April 2021], Part 2 (open access)

Texas Inmate Monthly Report: [April 2021], Part 2

Monthly report issued by the Texas Department of Criminal Justice providing statistical information about numbers and categories of inmates held in various locations across Texas.
Date: May 4, 2021
Creator: Texas. Department of Criminal Justice.
Object Type: Report
System: The Portal to Texas History
The ECHO, Vol. 89, No. 4, Ed. 1 Thursday, May 4, 2017 (open access)

The ECHO, Vol. 89, No. 4, Ed. 1 Thursday, May 4, 2017

Monthly newspaper produced for inmates in the Texas criminal justice system containing news stories, policy updates, opinion pieces, creative works, and other information.
Date: May 4, 2017
Creator: Texas. Department of Criminal Justice.
Object Type: Newspaper
System: The Portal to Texas History
A Miniature Beta Scintillation Detector (open access)

A Miniature Beta Scintillation Detector

The development of a miniature probe was desired for measuring approximate single nuclide beta dose rate in solution and in various animal organs. This probe designed for biological experiments, was to have maximum possible sensitivity to detect low levels of nuclide concentrations. The desired dimensions of the light pipe were to be approximately one-fourth-inch diameter with lengths of three to twelve inches.
Date: May 4, 1960
Creator: Kent, R. A. R. & Sheen, E. M.
Object Type: Report
System: The UNT Digital Library
Redox Dissolver Off-Gas Monitor, Calibration and Test (open access)

Redox Dissolver Off-Gas Monitor, Calibration and Test

In order to prevent dangerous concentrations of combustible gases such as hydrogen and ammonia in Redox dissolvers, a continuous analysis of the off-gases is needed. Hydrogen is evolved from most fuel element dissolution processes now used or planned for use at Redox. Ammonia is also released from ammonium fluoride dissolution of zirconium and caustic dissolution of aluminum cladding. Oxides of nitrogen and hydrogen are formed during nitric acid dissolution of uranium or plutonium-aluminum alloys. Since no fixed ratio exists between the concentrations of any two of these gases, the determination of combustible gases in complex mixtures is not possible with a single bulk property analyzer.
Date: May 4, 1960
Creator: Huck, C. E.
Object Type: Report
System: The UNT Digital Library
Plasters and Elastomers in Radiation Fields: A Preliminary Evaluation (open access)

Plasters and Elastomers in Radiation Fields: A Preliminary Evaluation

With the construction of nuclear reactors, a great deal of emphasis has been placed upon studying the effects of radiation on the solid materials of construction. It has become necessary to consider radiation exposure as an environmental entity along with others so established such as temperature, electrical and mechanical stress, chemical resistance, weather, etc. Problems concerning the study of the behavior of materials that are thus increased when radiation exposure has to be evaluated singly or in combination with one or more of the other environments. This paper presents the general plan of attack being followed to solve such problems that arise when plastics and elastomers are placed in radiation fields. These studies were undertaken for two primary reasons: (1) to obtain engineering data for practical applications of the desirable properties of these materials for such devices as o-rings, gaskets, pipe, and electrical insulation; and (2) to use these data to enable a better understanding of the nature of radiation effects on these materials. The initial phase of the program is the screening of materials by subjecting them to various degrading environments and recording property changes. Thus, with data on how these materials performed, more comprehensive studies could be made …
Date: May 4, 1956
Creator: Harrington, Robert.
Object Type: Report
System: The UNT Digital Library
The Effect of Fast Fission on k (open access)

The Effect of Fast Fission on k

The importance of fast neutron fission (i.e., fission caused by neutrons before being slowed down) was recognized by Szilard, and calculations similar to the present one have already been carried out by him, Feld, Ashkin, Wheeler, Wigner and others. The purpose of the present paper is to give a general formula for the contribution of fast fission to the multiplication constant, which will include all the cases already considered and will be applicable to more complicated geometries than those considered by the previous writers.
Date: May 4, 1943
Creator: Castle, H.; Ibser, H.; Sacher, G. & Weinberg, Alvin Martin, 1915-2006
Object Type: Report
System: The UNT Digital Library
AUTOMOBILE-TOOL. (open access)

AUTOMOBILE-TOOL.

Patent for an automobile tool for the Ford make of automobiles that "will hold the springs away from the bands and allow the bands to be removed and replaced or adjusted, when necessary" (lines 29-32) including instructions and illustrations.
Date: May 4, 1920
Creator: ROBERGE, JAMES Z.
Object Type: Patent
System: The Portal to Texas History
Button-Fastener. (open access)

Button-Fastener.

Patent for a button fastener for clothing that is not liable to damage cloth.
Date: May 4, 1920
Creator: Taylor, Albert Joshua
Object Type: Patent
System: The Portal to Texas History
Battery-Plate and Terminal Connection (open access)

Battery-Plate and Terminal Connection

Patent for improvements on a battery plate and terminal connections. Plate lugs and the terminal for the battery are a solid piece to fit more battery sizes and prevent the lugs from breaking off.
Date: May 4, 1920
Creator: Hawkins, Alda F.
Object Type: Patent
System: The Portal to Texas History
Valve-Flushing Means (open access)

Valve-Flushing Means

Patent for a method of expelling debris and deposits in a foot valve, including illustrations.
Date: May 4, 1920
Creator: Coulson, William J.
Object Type: Patent
System: The Portal to Texas History
Locomotive Driving-Box. (open access)

Locomotive Driving-Box.

Patent for improvements in locomotive driving boxes. Designed to "eliminate the necessity of removing the driving wheels" (lines 13-14) to replace the crown brasses, "eliminate the necessity of removing the driving box" (lines 16-17) to avoid lateral wear, and eliminates the necessity of expensive machine work.
Date: May 4, 1920
Creator: Simmons, Arthur, W.
Object Type: Patent
System: The Portal to Texas History
Pump-Piston. (open access)

Pump-Piston.

Patent for an improved pump piston used to pump oil from deep wells. The main improvement in this piston is that it is less susceptible to damage from sand or sediment by keeping sediment out of the piston valve, thus preventing it from accruing any long term damage that may render the piston irreparable. This design is also capable of fixing any wear due to sand or grit without removing the piston from the well.
Date: May 4, 1920
Creator: Coulson, William J.
Object Type: Patent
System: The Portal to Texas History
Stamping Machine. (open access)

Stamping Machine.

Patent for improvements to stamping-machines used for the purposes of marketing nuts. The device can efficiently perform the laborious act of stamping individual nuts with a trademark. It can be adjusted to stamp nuts of any size, along with other similar objects, without breaking or injuring the nut.
Date: May 4, 1920
Creator: Wischhesen, Frederick B.
Object Type: Patent
System: The Portal to Texas History
Pump-Plunger (open access)

Pump-Plunger

Patent for an improvement in Pump-Plungers. "It has a particular application to pumps of this character for use in oil or water wells where the liquid is mixed with sand" (lines 13-16), including illustrations.
Date: May 4, 1920
Creator: Mackenzie, Alexander S.
Object Type: Patent
System: The Portal to Texas History
Peanut-Roaster. (open access)

Peanut-Roaster.

Patent for a new and improved peanut roaster with a rotating drum that can sound an alarm after a certain interval of time and can be moved directly over a roasting flame, including illustrations.
Date: May 4, 1920
Creator: Peckham, Samuel C.
Object Type: Patent
System: The Portal to Texas History
Signaling-Boiler (open access)

Signaling-Boiler

Patent for a signaling boiler designed to test food during the cooking process to determine whether food has completed cooking, and to signal via a whistle when said food is determined to have been properly cooked. Additional design details include the provision of a supporting mechanism for potatoes and other vegetables to rest on, as well as a compact form of the overall device.
Date: May 4, 1920
Creator: Kelley, Marven
Object Type: Patent
System: The Portal to Texas History
Roofing-Tile. (open access)

Roofing-Tile.

Patent for an improved plastic roofing tile with sealing, locking, pseudo-dove tail joints.
Date: May 4, 1920
Creator: Martin, John M.
Object Type: Patent
System: The Portal to Texas History
Covertible Stock and Freight Car. (open access)

Covertible Stock and Freight Car.

Patent for an improved process of constructing convertible stock and freight train cars, including illustrations.
Date: May 4, 1920
Creator: Wyatt, Everett
Object Type: Patent
System: The Portal to Texas History

Right Now, You're Helping the Health of the Baby You're Carrying

2 posters promoting the importance of regular doctor visits and listing questions for women to ask their doctors about their health. The first poster is aimed at pregnant women and includes questions about breastfeeding, relationships, and birth plans. The second poster is aimed at women hoping to become pregnant and includes questions about lifestyle, medical history, and general health.
Date: May 4, 2019
Creator: Texas. Department of State Health Services.
Object Type: Poster
System: The Portal to Texas History
Texas Preventable Disease News, Volume 45, Number 18, May 4, 1985 (open access)

Texas Preventable Disease News, Volume 45, Number 18, May 4, 1985

Newsletter of the Texas Bureau of Disease Control and Epidemiology discussing the news, activities, and events of the organization and other information related to health in Texas.
Date: May 4, 1985
Creator: Texas. Bureau of Disease Control and Epidemiology.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
85th Texas Legislature, Regular Session, House Concurrent Resolution 115 (open access)

85th Texas Legislature, Regular Session, House Concurrent Resolution 115

Concurrent resolution introduced by the Texas House of Representatives and Senate commemorating the 100th anniversary of Boy Scout Troop No. 201 in Longview.
Date: May 4, 2017
Creator: Texas. Legislature. House of Representatives.
Object Type: Legislative Document
System: The Portal to Texas History
85th Texas Legislature, Regular Session, Senate Bill 550, Chapter 3 (open access)

85th Texas Legislature, Regular Session, Senate Bill 550, Chapter 3

Bill introduced by the Texas Senate relating to the sale or assignment of tax credits for the certified rehabilitation of certified historic structures.
Date: May 4, 2017
Creator: Texas. Legislature. Senate.
Object Type: Legislative Document
System: The Portal to Texas History
85th Texas Legislature, Regular Session, House Concurrent Resolution 114 (open access)

85th Texas Legislature, Regular Session, House Concurrent Resolution 114

Concurrent resolution introduced by the Texas House of Representatives and Senate congratulating Pastor Robbie Keith Caldwell on his 50 years in the ministry.
Date: May 4, 2017
Creator: Texas. Legislature. House of Representatives.
Object Type: Legislative Document
System: The Portal to Texas History