Collection
Texas Patents
543
Technical Report Archive and Image Library
143
National Advisory Committee for Aeronautics Collection
125
USDA Farmers' Bulletins
35
USGS Topographic Map Collection
27
Government Documents A to Z Digitization Project
12
The Federal Reporter
8
Texas Soil Surveys
4
United States Experiment Station Record
4
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2
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NACA Technical Memorandums
52
NACA Technical Notes
46
NACA Technical Reports
26
Farmers' bulletin (United States. Dept. of Agriculture)
24
United States Bureau of Mines Reports
13
30 Minute Series
12
Farmers' bulletin (United States. Department of Agriculture)
11
National reporter system. United States series
8
The Federal Reporter
8
15 Minute Series (Topographic)
5
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Regulation of Explosives in the United States: with Especial Reference to the Administration of the Explosives Act of October 6, 1917, by the Bureau of Mines
From Origin of Federal Explosives Act, October 6, 1917: " A competent force from the Bureau of Mines was then assigned to study the laws and ordinances of countries, States, and municipalities in which lawas and ordinances regulating explosives have been enacted, and especially to ascertain how these laws had been modified by the necessities of the existing state of war, and, also, wherein the proposed law might conflict with or overlap the jurisdiction of existing laws. This incomplete enumeration of the peace-time uses of explosives shows that the quantity consumed is large. A more definite conception is given by the following statistics of production, to which is added statistics for exportation that disclose something of the effect of war on the explosives industry."
Date:
1921
Creator:
Munroe, Charles E.
Object Type:
Report
System:
The UNT Digital Library
Flotation Tests of Idaho Ores
From Introduction: "This paper covers part of the investigations carried on by the United States Bureau of Mines in cooperation with the Idaho Bureau of Mines, the University of Idaho, and certain mining companies of the Coeur d' Alene region. Although the results of the tests included in this report are not to be considered final, they indicate possibilities and may suggest others leading to a solution of the problem of separating lead and zinc sulphides by differential flotation in the treatment of certain ores."
Date:
1921
Creator:
Wright, Clarence A.; Parmelee, James G. & Norton, James T.
Object Type:
Report
System:
The UNT Digital Library
Investigations of Zirconium with Especial Reference to the Metal and Oxide: Historical Review and Bibliography
From introduction: "As it necessary to begin with a historical review of the literature, such a review is given as Part I of this report, and a bibliography is included as Part IV. References to the numbered items in this bibliography are made throughout the text, the usual footnote reference being omitted. Analyses of the products and conclusions as their purity are given under the descriptions of methods of preparation. A table showing the properties amorphous metal, and another showing the properties of the coherent metal, will be found under appropriate headings in Part II."
Date:
1921
Creator:
Marden, J. W. & Rich, M. N.
Object Type:
Report
System:
The UNT Digital Library
Bibliography of Petroleum and Allied Substances in 1918
From Introduction: "This bulletin is the fourth in the series of petroleum bibliographies being published by the Bureau of Mines, the preceding, Bulletins 149, 165, and 180, being complications for the years 1915, 1916, and 1917, respectively. In this bulletin the same general plan has been followed in arranging the references, but a few changes and additions have been made in classification, the more important changes being in the classes "Geology and Origin" and "Refining and Refineries." During the year German periodicals were not available, and as in the bibliography for 1917, references to articles in foreign journals that were not available have been taken from other sources and credit given to those sources."
Date:
1921
Creator:
Burroughs, E. H.
Object Type:
Report
System:
The UNT Digital Library
The Federal Reporter with Key-Number Annotations, Volume 268: Cases Argued and Determined in the Circuit Courts of Appeals and District Courts of the United States and the Court of Appeals in the District of Columbia, December, 1920-February, 1921.
The Federal Reporter contains the text of decisions and commentary regarding cases tried in circuit and district courts throughout the United States. The opinions printed in the volumes include both written statements and oral comments transcribed for publication. Index of cases starts on page ix.
Date:
1921
Creator:
unknown
Object Type:
Legislative Document
System:
The UNT Digital Library
The Federal Reporter with Key-Number Annotations, Volume 271: Cases Argued and Determined in the Circuit Courts of Appeals and District Courts of the United States and the Court of Appeals in the District of Columbia, May-June, 1921.
The Federal Reporter contains the text of decisions and commentary regarding cases tried in circuit and district courts throughout the United States. The opinions printed in the volumes include both written statements and oral comments transcribed for publication. Index of cases starts on page ix.
Date:
1921
Creator:
unknown
Object Type:
Legislative Document
System:
The UNT Digital Library
The Federal Reporter with Key-Number Annotations, Volume 267: Cases Argued and Determined in the Circuit Courts of Appeals and District Courts of the United States and the Court of Appeals in the District of Columbia, November-December, 1920.
The Federal Reporter contains the text of decisions and commentary regarding cases tried in circuit and district courts throughout the United States. The opinions printed in the volumes include both written statements and oral comments transcribed for publication. Index of cases starts on page ix.
Date:
1921
Creator:
unknown
Object Type:
Legislative Document
System:
The UNT Digital Library
The Federal Reporter with Key-Number Annotations, Volume 270: Cases Argued and Determined in the Circuit Courts of Appeals and District Courts of the United States and the Court of Appeals in the District of Columbia, April-May, 1921.
The Federal Reporter contains the text of decisions and commentary regarding cases tried in circuit and district courts throughout the United States. The opinions printed in the volumes include both written statements and oral comments transcribed for publication. Index of cases starts on page ix.
Date:
1921
Creator:
unknown
Object Type:
Legislative Document
System:
The UNT Digital Library
The Federal Reporter with Key-Number Annotations, Volume 273: Cases Argued and Determined in the Circuit Courts of Appeals and District Courts of the United States and the Court of Appeals in the District of Columbia, August-September, 1921.
The Federal Reporter contains the text of decisions and commentary regarding cases tried in circuit and district courts throughout the United States. The opinions printed in the volumes include both written statements and oral comments transcribed for publication. Index of cases starts on page ix.
Date:
1921
Creator:
unknown
Object Type:
Legislative Document
System:
The UNT Digital Library
The Federal Reporter with Key-Number Annotations, Volume 266: Cases Argued and Determined in the Circuit Courts of Appeals and District Courts of the United States and the Court of Appeals in the District of Columbia, September-November, 1920.
The Federal Reporter contains the text of decisions and commentary regarding cases tried in circuit and district courts throughout the United States. The opinions printed in the volumes include both written statements and oral comments transcribed for publication. Index of cases starts on page ix.
Date:
1921
Creator:
unknown
Object Type:
Legislative Document
System:
The UNT Digital Library
The Federal Reporter with Key-Number Annotations, Volume 269: Cases Argued and Determined in the Circuit Courts of Appeals and District Courts of the United States and the Court of Appeals in the District of Columbia, February 24-April 7, 1921.
The Federal Reporter contains the text of decisions and commentary regarding cases tried in circuit and district courts throughout the United States. The opinions printed in the volumes include both written statements and oral comments transcribed for publication. Index of cases starts on page viii.
Date:
1921
Creator:
unknown
Object Type:
Legislative Document
System:
The UNT Digital Library
The Federal Reporter with Key-Number Annotations, Volume 272: Cases Argued and Determined in the Circuit Courts of Appeals and District Courts of the United States and the Court of Appeals in the District of Columbia, June-August, 1921.
The Federal Reporter contains the text of decisions and commentary regarding cases tried in circuit and district courts throughout the United States. The opinions printed in the volumes include both written statements and oral comments transcribed for publication. Index of cases starts on page ix.
Date:
1921
Creator:
unknown
Object Type:
Legislative Document
System:
The UNT Digital Library
The Coupling of Engines
This report examines the idea of coupling numerous engines together to turn a single propeller, which the author feels would free aircraft design from the problems of multi-engine and propeller design.
Date:
April 1921
Creator:
Boccaccio, Paul
Object Type:
Report
System:
The UNT Digital Library
Commercial Aviation in Germany: Past and Future
This review of commercial aviation includes postal delivery, package transport, and passenger transport. Both airplanes and airships are covered in this review.
Date:
February 1921
Creator:
Wronsky, W.
Object Type:
Report
System:
The UNT Digital Library
The Art of Writing Scientific Reports
As the purpose of the report is to transmit as smoothly and as easily as possible, certain facts and ideas, to the average person likely to read it, it should be written in a full and simple enough manner to be comprehended by the least tutored, and still not be boring to the more learned readers.
Date:
March 1921
Creator:
Norton, F. H.
Object Type:
Report
System:
The UNT Digital Library
Development of Aeronautical Engines by the Army and Navy
Different aircraft engines are categorized as being of interest to only the Army or Navy or to both armed services. A listing of the different engines is presented along with some statistics, namely, horsepower.
Date:
March 3, 1921
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
The Rumpler Passenger Airplane
This report details the Rumpler Limousine which was a further development of the well known type 5 A 2. The fuselage, engine, cabin, wings, controls, and landing gear are all discussed.
Date:
March 1921
Creator:
Langsdorff, Werner v.
Object Type:
Report
System:
The UNT Digital Library
Resume of the Theory of Naval and Aerial Propulsive Propellers and of Airplanes in the Rectilinear Flight
Though dissimilar, these two subjects have been united because they have some points in common. The computation of the movement of an airplane can only be correctly established if we are in a position to know exactly the thrust and resisting torque of the propeller for the various values of slip, which may vary greatly according to circumstance. The first part of the work concerns propellers and introduces as a fundamental variable, the true slip (delta) with respect to the effective pitch, which is the advance per revolution of the propeller corresponding to no thrust. The second part deals with characteristic curves of an airplane.
Date:
April 1921
Creator:
Rateau, A.
Object Type:
Report
System:
The UNT Digital Library
Abstracts from the German Technical Press: Rates for Flights Organized by the State
Report presenting tariffs that are written for all aircraft manufacturing companies to follow regarding aircraft orders.
Date:
April 1921
Creator:
United States. National Advisory Committee for Aeronautics.
Object Type:
Report
System:
The UNT Digital Library
The Technical Development of the Transport airplane: Report of the Aero-Technical Conference of the Scientific Association for Aeronautics, March 5, 1919
The abolition of military qualifications gives free scope to new technical possibilities in the development of transport airplanes. This report notes the various considerations that must be made when designing aircraft to meet the needs of commercial passengers. Comfort and safety must be emphasized.
Date:
April 1921
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Sixth Meeting of the Members of the German Scientific Association for Aeronautics
Report presenting a description of a meeting of the German Scientific Association for Aeronautics. The topics that were discussed are described.
Date:
April 1921
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Study of the Resistance Offered by Propellers Rotating on an Airstream
This report presents a series of tests conducted to verify the formula for thrust P = q(exp 2) D(exp 2) V(exp 2), where P represents thrust, V the velocity of the airstream, D the diameter of the propeller, and q the lifting quality of a comparative propeller which is called the conjugate propeller.
Date:
April 1921
Creator:
Lame, M.
Object Type:
Report
System:
The UNT Digital Library
Extracts from the German Technical Process. Transport Airplanes.
Report presenting a description of the transition stage of airplanes and how it will change with new developments in aircraft design. The details of the debate between centralized or decentralized installation are also provided, including some of the pros and cons of each.
Date:
April 1921
Creator:
Rohrbach, A. K.
Object Type:
Report
System:
The UNT Digital Library
British Certificates of Airworthiness
This report details the rules and regulations for obtaining a British airworthiness certificate. Aircraft loading and construction are especially important.
Date:
May 1921
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library