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Resource Type
Collection
Texas Patents
545
Technical Report Archive and Image Library
104
National Advisory Committee for Aeronautics Collection
81
USDA Farmers' Bulletins
64
USGS Topographic Map Collection
39
The Federal Reporter
7
Government Documents A to Z Digitization Project
5
Texas Soil Surveys
2
United States Experiment Station Record
2
Texas State Publications
1
3 More
Serial/Series Title
Farmers' bulletin (United States. Dept. of Agriculture)
59
NACA Technical Reports
45
NACA Technical Notes
30
United States Bureau of Mines Reports
18
30 Minute Series
17
Bulletin (United States. Bureau of Mines)
7
National reporter system. United States series
7
The Federal Reporter
7
15 Minute Series (Topographic)
5
Farmers' bulletin (United States. Department of Agriculture)
5
16 More
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Year
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766 Matching Results
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Stability of the Parachute and Helicopter
This report deals with an extension of the theory of stability in oscillation to the case of aircraft following a vertical trajectory, and particularly to the oscillations of parachutes.
Date:
1920
Creator:
Bateman, H.
Object Type:
Report
System:
The UNT Digital Library
Supplies and Production of Aircraft Woods
The purpose of this report is to present in brief form such information as is available regarding the supplies of the kinds of wood that have been used or seem likely to become important in the construction of airplanes, and the amount of lumber of each species normally put on the market each year. A general statement is given of the uses to which each kind of wood is or may be put.
Date:
1920
Creator:
Sparhawk, W. N.
Object Type:
Report
System:
The UNT Digital Library
Congressional Medal of Honor, the Distinguished Service Cross, and the Distinguished Service Medal Issued by the War Department Since April 6, 1917 Up to and including General Orders, Number 126, War Department, November 11, 1919
Book containing the names and deeds of the recipients of the Congressional Medal of Honor, the Distinguished Service Cross, and the Distinguished Service Medal awarded for actions during World War I. It includes information such as whether the award was posthumous, the person's rank, and their company (if applicable).
Date:
1920
Creator:
United States. Adjutant-General's Office.
Object Type:
Book
System:
The UNT Digital Library
Talc Mining in New York
Report issued by the U.S. Bureau of Mines on the talc deposits in New York state. The report includes details on the geology of the deposits, and the mining and milling of the talc. This report contains illustrations.
Date:
October 1920
Creator:
Ladoo, Raymond B.
Object Type:
Report
System:
The UNT Digital Library
Farm slaughtering and use of lamb and mutton.
Describes the use of lamb and mutton in meals, and methods for slaughtering, butchering, and preparing it. Discusses the reasons for its limited use.
Date:
December 1920
Creator:
Potts, C. G.
Object Type:
Book
System:
The UNT Digital Library
The beef calf : its growth and development.
Outlines the fundamental principles of cattle raising and breeding for beef production.
Date:
August 1920
Creator:
Sheets, E. W.
Object Type:
Book
System:
The UNT Digital Library
The Sunset-Midway Oil Field, California: Part 1. Geology and Oil Resources
This is a report on the Sunset-Midway oil field in Kern County, California, including the geology and production of oil.
Date:
1920
Creator:
Pack, Robert W.
Object Type:
Report
System:
The UNT Digital Library
Antiskid Device
Patent for reinforcing the hinge of an antiskid device. Long studs on heavy foot plates on tires are used to brace the hinges not allowing them to wear down by dragging on the road surface.
Date:
February 17, 1920
Creator:
Smith, Ross
Object Type:
Patent
System:
The Portal to Texas History
Combined Swingletree and Evener.
Patent, including illustrations, for improvements to combined swingletrees and eveners, tools used to equalize strain between a draft animal and vehicle, "which is easily and simply constructed, inexpensive to manufacture, and one which will be very efficient in operation" (lines 22-25).
Date:
March 16, 1920
Creator:
White, Floyd N.
Object Type:
Patent
System:
The Portal to Texas History
Bank-Check Writer.
Patent for a new and useful improvements in Bank-Check Writers. With this device, a blank check may be inserted and the name of the payee and the amount in figures will be typewritten.
Date:
May 18, 1920
Creator:
Wendelken, Charles
Object Type:
Patent
System:
The Portal to Texas History
Compound Air-Compressor.
Patent for an improved Compound Air-Compressor by having four cylinders, in pairings of a high pressure and a low pressure cylinders. The air from the low pressure cylinder will be fed to the high pressure cylinder. The pistons will work in succession rather than simultaneously.
Date:
February 17, 1920
Creator:
Jones, Oceola
Object Type:
Patent
System:
The Portal to Texas History
Auto Steering-Lock
Patent for a lock designed to attach to the spokes of a steering wheel with the intention of guarding it from "unauthorized persons" (line 20), including illustrations.
Date:
June 1, 1920
Creator:
Cosby, Luther F.
Object Type:
Patent
System:
The Portal to Texas History
Apparatus for Treatment of Oil Emulsions.
Patent for improvements in apparatus for treatment of oil emulsions by providing a means that will greatly assist in the separation of water from oil emulsions and which will aid the re-absorption or retention of gas.
Date:
January 13, 1920
Creator:
McKibben, Charles W.
Object Type:
Patent
System:
The Portal to Texas History
Apparatus for Extracting Minerals from Ores.
Patent for an apparatus that extracts minerals, especially sulfur, from ores. The apparatus features new and useful improvements, creating an automatic extraction that separates the minerals in a pure state.
Date:
January 13, 1920
Creator:
Shires, George M.
Object Type:
Patent
System:
The Portal to Texas History
Aeroplane.
Patent for a new and useful airplane that provides the ability of the aircraft to take off from the ground at an abrupt angle. The aircraft has a supplemental propeller and jointed body to direct the machine upward in an abrupt ascent, making it especially useful in wooded areas or where obstructions prevent normal take-off.
Date:
February 3, 1920
Creator:
Cartwright, Andrew
Object Type:
Patent
System:
The Portal to Texas History
Experiment Station Record, Volume 40, January-June, 1919
Volume provides abstracts of agricultural experiments conducted during the year. Also includes statistics, convention reports, bulletins, bibliographies, and listings for Spanish edition publications from the Porto Rico station. Name and subject indexes start on page 901.
Date:
1920
Creator:
United States. Office of Experiment Stations.
Object Type:
Book
System:
The UNT Digital Library
Experiment Station Record, Volume 41, July-December, 1919
Volume provides abstracts of agricultural experiments conducted during the year. Also includes statistics, convention reports, bulletins, bibliographies and listings for Spanish edition publications from the Porto Rico Station. Name and subject indexes start on page 901.
Date:
1920
Creator:
United States. Office of Experiment Stations.
Object Type:
Book
System:
The UNT Digital Library
The Manufacture of Sulphuric Acid in the United States
Report issued by the Bureau of Mines over the production of sulfuric acid. As stated in the introduction, "the present bulletin was prepared to cover the main facts in regard to the industry in this country, including a discussion of the supplies of sulfur-bearing raw materials, the situation of the acid plants, the principal points in regard to manufacturing processes, and the uses of the acid" (p. 2). This report includes tables, illustrations, photographs, and a map.
Date:
July 1920
Creator:
Wells, Arthur Edward & Fogg, Donald E.
Object Type:
Report
System:
The UNT Digital Library
Drag or Negative Traction of Geared-Down Supporting Propellers in the Downward Vertical Glide of a Helicopter
Discussed here are computations of drag or negative traction of geared down supporting propellers in the downward vertical glide of a helicopter. By means of Frounde's Theory, the maximum value of the drag of a windmill is calculated. For wooden propellers, the author finds that the difference between the drag and the weight is proportional to the number of blades and is larger for propellers of small diameter; thus it is 25 kg. for a six blade propeller with a diameter of 2 m. 50.
Date:
September 1920
Creator:
Toussaint, A.
Object Type:
Report
System:
The UNT Digital Library
Variable Pitch Propellers
In this report are described four different types of propellers which appeared at widely separated dates, but which were exhibited together at the last Salon de l'Aeronautique. The four propellers are the Chaviere variable pitch propeller, the variable pitch propeller used on the Clement Bayard dirigible, the variable pitch propeller used on Italian dirigibles, and the Levasseur variable pitch propeller.
Date:
November 1920
Creator:
Bacon, D. L.
Object Type:
Report
System:
The UNT Digital Library
Recent Developments in Light Alloys
This report is intended to cover the progress that has been made in both the manufacture and utility of light alloys in the United States since the first part of 1919. Duralumin is extensively discussed both as to manufacture and durability.
Date:
November 1920
Creator:
Woodward, R. W.
Object Type:
Report
System:
The UNT Digital Library
Tests of Artificial Flight at High Altitudes
"If we wish to form an accurate idea of the extraordinary progress achieved in aeronautics, a comparison must be made of the latest altitude records and the figures regarded as highest attainable limit some ten years ago. It is desirable, for two reasons, that we should be able to define the limit of the altitudes that can be reached without artificial aid. First, to know to what extent the human body can endure the inhalation of rarified air. Second, the mental capacity of the aviator must be tested at high altitudes and the limit known below which he is able to make reliable observations without being artificially supplied with oxygen" (p. 1).
Date:
November 1920
Creator:
Gradenwitz, Arthur
Object Type:
Report
System:
The UNT Digital Library
On the Elementary Relation Between Pitch, Slip, and Propulsive Efficiency
The author examines the current theory on the importance of reducing slip in airplane propellers. The author feels an exaggerated importance is attached to this supposition and feels that the increase in friction by an increase in propeller area or number of revolutions can't be discounted.
Date:
1920
Creator:
Froude, W.
Object Type:
Report
System:
The UNT Digital Library
Notes on the Theory of the Accelerometer
Report discusses several types of accelerometers and how they function. Methods for reducing error and determining the source of the error, including the best placement for the device, are included.
Date:
May 1920
Creator:
Warner, E. P.
Object Type:
Report
System:
The UNT Digital Library