Partner
Collection
Texas Digital Newspaper Program
242
Oklahoma Digital Newspaper Program
169
The Oklahoma City Times
91
Tocker Foundation Grant
82
Abilene Library Consortium
39
Texas Borderlands Newspaper Collection
37
Daily Herald, Brownsville
27
Chickasha Newspaper Collection
26
Gainesville Register
23
The Abilene Reporter
16
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475 Matching Results
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475
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Lathes
A guide to the operation and maintenance of lathes for general shop work.
Date:
November 29, 1940
Creator:
United States. Army. Air Corps.
Object Type:
Book
System:
The UNT Digital Library
Grinding machines
This report provides the definition of grinding and discusses different processes, types, and operations of grinding.
Date:
November 26, 1940
Creator:
United States. Army. Air Corps.
Object Type:
Book
System:
The UNT Digital Library
Notes on physiology in aviation medicine.
Discusses the physical effects of flight, and the mechanics and chemistry of respiration.
Date:
October 21, 1940
Creator:
United States. War Department.
Object Type:
Book
System:
The UNT Digital Library
Railway shop battalion.
"This manual explains the organization and operation of railway shop battalion for employment on a standard military railway. Its purpose is to assist railway shop battalion officers in the training and operation of their units, and to guide command and staff officers charged with the employment of railway shop battalions."
Date:
November 29, 1940
Creator:
United States. War Department. Office of the Chief of Engineers.
Object Type:
Book
System:
The UNT Digital Library
Theory of ballooning.
A general guide to piloting a free balloon.
Date:
April 25, 1940
Creator:
United States. War Department.
Object Type:
Book
System:
The UNT Digital Library
Ordnance maintenance : 3-inch antiaircraft gun matériel, M2A2, M2A1, M1A2, M1A1, T1A2, and T1A1
Provides instructions for inspection, disassembly and assembly, and maintenance and repair of 3-inch antiaircraft gun matériel, including the use of special repair tools.
Date:
July 25, 1940
Creator:
United States. War Department.
Object Type:
Book
System:
The UNT Digital Library
Laundry machinery manual including blueprints
Blueprint depicting technical details of Battleship Texas.
Date:
July 1, 1940
Creator:
unknown
Object Type:
Technical Drawing
System:
The Portal to Texas History
Laundry machinery manual including blueprints
Blueprint depicting technical details of Battleship Texas.
Date:
July 1, 1940
Creator:
unknown
Object Type:
Technical Drawing
System:
The Portal to Texas History
Laundry machinery manual including blueprints
Blueprint depicting technical details of Battleship Texas.
Date:
July 1, 1940
Creator:
unknown
Object Type:
Technical Drawing
System:
The Portal to Texas History
Installation & instruction manual for electric refrigerators /Copeland Refrigeration Corp.
Blueprint depicting technical details of Battleship Texas.
Date:
June 13, 1940
Creator:
unknown
Object Type:
Technical Drawing
System:
The Portal to Texas History
Flow coefficients of monosleeve valves
The flow coefficients of the intake and the exhaust ports of a sleeve-valve cylinder were measured by attaching the cylinder to a large tank and measuring the changes in pressure and temperature in the tank that were caused by short periods of air flow through the valve ports. The derivation of the equations on which the flow coefficients are based is given. The distribution of total pressure in the arms of the sleeve-valve intake manifold was measured. The arms are found to have as little as 75 percent of the total pressure within the manifold entrance.
Date:
February 8, 1940
Creator:
Waldron, C. D.
Object Type:
Report
System:
The UNT Digital Library
An Investigation of the Prevention of Ice on the Airplane Windshield
"An investigation of three methods for the prevention and the removal of ice on an airplane windshield has been completed. The methods were: electric heating; hot-air heating; and an alcohol-dispensing, rotating wiper blade. The results showed that vision through the airplane windshield could be maintained during severe icing conditions by the use of heat" (p. 1).
Date:
March 1940
Creator:
Rodert, Lewis A.
Object Type:
Report
System:
The UNT Digital Library
A theoretical study of lateral stability with an automatic pilot
"The influence of automatic operation of the aileron and rudder controls on the lateral stability of an airplane is discussed. The control deflections are assumed to be proportional to the deviations and to the rates of deviation of the airplane from steady-flight conditions. The effects of changes in the types of deviation governing control application are considered. For one simple method of control in which the aileron deflection is proportional to the angle of bank and the rudder deflection is proportional to the angle of yaw, the effect of lag in control application is studied and regions of stability with and without lag are given" (p. 273).
Date:
March 4, 1940
Creator:
Imlay, Frederick H.
Object Type:
Report
System:
The UNT Digital Library
Structural Tests of a Stainless Steel Wing Panel by Hydrostatic Loading
Note presenting testing of a simplified type of all-metal wing construction of 18-8, spot-welded except for skin attachment, by means of hydrostatic loading, the wing being proportioned to permit close representation of typical conditions by means of the waterhead. The results showed the possibility of eliminating almost all of the stiffeners from a stressed-skin wing, the possible reduction of weight in a lightly loaded wing and of substantial cost in the construction of any all-metal wing.
Date:
November 1940
Creator:
Upson, Ralph H.
Object Type:
Report
System:
The UNT Digital Library
Safety Factors in Construction and Ventilation, Wawona Vehicular Tunnel, Yosemite National Park, California
Report issued by the Bureau of Mines discussing the safety and ventilation hazards presented during the construction of the Wawona tunnel in Yosemite National Park. Safety precautions and procedures used during the construction are presented. This report includes tables, illustrations, and photographs.
Date:
1940
Creator:
Ash, S. H.
Object Type:
Report
System:
The UNT Digital Library
DFS Dive-Control Brakes for Gliders and Airplanes and Analytical Study of the Drag of the DFS Dive-Control Brake
These two reports are surveys on the progress and present state of development of dive-control flaps for gliders and airplanes. The second article describes how on the basis of wind tunnel and free-flight tests, the drag increase on brake flaps of the type DFS, can be predicted. Pressure records confirm a two-dimensional load distribution along the brake-flap surface.
Date:
January 1940
Creator:
Jacobs, Hans & Wanner, Adolf
Object Type:
Report
System:
The UNT Digital Library
CO2, Carbon Dioxide, Fire Extinguishing Equipment Instructions [Fire Fighting]
Blueprint depicting technical details of Battleship Texas.
Date:
July 30, 1940
Creator:
unknown
Object Type:
Technical Drawing
System:
The Portal to Texas History
Practical Air Navigation
This book was designed to use as a text on air navigation on private ground course of the Civilian Pilot Training Program, and is the fourth edition of the publication "Practical Air Navigation and the Use of Aeronautical Charts of the U.S. Coast and Geodetic Survey" by Thoburn C. Lyon.
Date:
September 1940
Creator:
Lyon, Thoburn C.
Object Type:
Report
System:
The UNT Digital Library
Mechanical Concentration of Gases
From Introduction: "This bulletin deals with a new mechanical means of attacking the problem of separation. Although it is improbable that any one type of separation could hope to find universal application, the method described is to be regarded as an alternative to conventional means that has attractive possibilities in certain instances."
Date:
1940
Creator:
Maier, C. G.
Object Type:
Report
System:
The UNT Digital Library
Flight Tests of Exhaust Gas Jet Propulsion, Special Report
"Flight tests were conducted on the XP-41 airplane, equipped with a Pratt & Whitney R1830-19, 14-cylinder, air-cooled engine, to determine the increase in flight speed obtainable by the use of individual exhaust stacks directed rearwardly to obtain exhaust-gas thrust. Speed increases up to 18 miles per hour at 20,000 feet altitude were obtained using stacks having an exit area of 3.42 square inches for each cylinder. A slight increase in engine power and decrease in cylinder temperature at a given manifold pressure were obtained with the individual stacks as compared with a collector-ring installation" (p. 1).
Date:
November 1940
Creator:
Pinkel, Benjamin & Turner, L. Richard
Object Type:
Report
System:
The UNT Digital Library
Flight Tests of Exhaust-Gas Jet Propulsion
"Flight tests were conducted on the XP-41 airplane, equipped with a Pratt & Whitney R1830-19, 14-cylinder, air-cooled engine, to determine the increase in flight speed obtainable by the use of individual exhaust stacks directly rearwardly to obtain exhaust-gas thrust. Speed increases up to 13 miles per hour at 20,000 feet altitude were obtained using stacks having an exit area of 3.42 square inches for each cylinder. A slight increase in engine power and decrease in cylinder temperature at a given manifold pressure were obtained with the individual stacks as compared with a collector-ring installation" (p. 1).
Date:
November 1940
Creator:
Pinkel, Benjamin & Turner, L. Richard
Object Type:
Report
System:
The UNT Digital Library
Report of the Twenty-Ninth National Conference on Weights and Measures, 1939
Report of the annual conference on weights and measures, hosted by the U.S. National Bureau of Standards in Washington D.C. It includes conference proceedings, a list of attendees, information about committees and officers, and other reports or commentaries discussed at the meetings.
Date:
1940
Creator:
United States. National Bureau of Standards.
Object Type:
Report
System:
The UNT Digital Library
Mechanical Shoveling in Underground Metal Mines
From Scope of Bulletin: "The object of the current bulletin is to present recent data on mechanical shoveling in underground metal mines and in selected nonmetal mines. This bulletin supplements the 1924 edition, but the main discussion covers mechanical shoveling only, because most of the new material relates to equipment recently developed, to improved technique in loading, and ti changes in loading practice in certain mining districts."
Date:
1940
Creator:
Mosier, McHenry & Steinmesch, J. H.
Object Type:
Report
System:
The UNT Digital Library
Mineral Industries Survey of the United States, California: Tuolumne and Mariposa Counties, Mother Lode District (South). Mines of the Southern Mother Lode Region, Part 2 -- Tuolumne and Mariposa Counties
Report issued by the Bureau of Mines over mining operations in the southern Mother Lode Region of California. A review of this area is presented, and discussed. This report includes tables, illustrations, and photographs.
Date:
1940
Creator:
Julihn, C. E. & Horton, F. W.
Object Type:
Report
System:
The UNT Digital Library