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793 Matching Results
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Wind Tunnel Balances
Report embodies a description of the balance designed and constructed for the use of the National Advisory Committee for Aeronautics at Langley Field, and also deals with the theory of sensitivity of balances and with the errors to which wind tunnel balances of various types are subject.
Date:
1920
Creator:
Warner, Edward P. & Norton, F. H.
Object Type:
Report
System:
The UNT Digital Library
Carbureting Conditions Characteristics of Aircraft Engines
Tests were conducted at the altitude laboratory erected at the Bureau of Standards for the National Advisory Committee for Aeronautics to determine the changes in engine performance with changes in atmospheric temperature and pressure at various levels above the earth's surface, with special reference to (a) the variables affecting the functioning of the carburetor and (b) the changes in performance resulting from variables in the carburetor itself. This report constitutes a concise statement of the difficulties to be encountered in this branch of carburetion.
Date:
1920
Creator:
Tice, Percival S.
Object Type:
Report
System:
The UNT Digital Library
Comparison of hecter fuel with export aviation gasoline
Among the fuels which will operate at compression ratios up to at least 8.0 without preignition or "pinking" is hecter fuel, whence a careful determination of its performance is of importance. For the test data presented in this report the hecter fuel used was a mixture of 30 per cent benzol and 70 per cent cyclohexane, having a low freezing point, and distilling from first drop to 90 per cent at nearly a constant temperature, about 20 degrees c. below the average distillation temperature ("mean volatility") of the x gasoline (export grade). The results of these experiments show that the power developed by hecter fuel is the same as that developed by export aviation gasoline at about 1,800 r.p.m. at all altitudes. At lower speeds differences in the power developed by the fuels become evident. Comparisons at ground level were omitted to avoid any possibility of damaging the engine by operating with open throttle on gasoline at so high a compression. The fuel consumption per unit power based on weight, not volume, averaged more than 10 per cent greater with hecter than with x gasoline. The thermal efficiency of the engine when using hecter is less than when using gasoline, …
Date:
January 29, 1920
Creator:
Dickinson, H. C.; Gage, V. R. & Sparrow, S. W.
Object Type:
Report
System:
The UNT Digital Library
Annual Report of the National Advisory Committee for Aeronautics (4th). Administrative Report Including Technical Reports Nos. 24 to 50
Report includes the National Advisory Committee for Aeronautics letter of submittal to the President, Congressional report, summaries of the committee's activities and research accomplished, expenditures, problems, recommendations, and a compilation of technical reports produced.
Date:
1920
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Operation and Care of Vehicle-Type Batteries
Manual for operation and care of storage batteries for use in Army depots.
Date:
June 7, 1920
Creator:
Vinal, George W.
Object Type:
Report
System:
The UNT Digital Library
A Glossary of the Mining and Mineral Industry
From Introduction: "This glossary is published by the Bureau of Mines as a contribution to the mining literature in the belief that it will fill a long-felt need. It contains about 20,000 terms; these include both technical and purely local terms related to metal mining, coal mining, quarrying, petroleum, and natural gas, and metallurgical works; names of useful, important, and common minerals and rocks; and geological terms. It presents in one comprehensive volume the available standard, technical terms relating to the mining and mineral industry, as well as provincialisms that have been or are now in use in English-speaking countries."
Date:
1920
Creator:
Fay, Albert H.
Object Type:
Report
System:
The UNT Digital Library
Bibliography of Petroleum and Allied Substances, 1917
From Introduction: "This bulletin is the third of the series of yearly petroleum bibliographies being published by the Bureau of Mines."
Date:
1920
Creator:
Burroughs, E. H.
Object Type:
Report
System:
The UNT Digital Library
Educational Agencies in Mining Communities
Report on the importance of industrial education in the mining sector. It explains general education and facilities for specialized education for proficiency in a given field.
Date:
April 1920
Creator:
Read, Thomas Thornton, 1880-1947
Object Type:
Report
System:
The UNT Digital Library
Extinguishing and Preventing Oil and Gas Fires
From Introduction: " As the subject of oil and gas is necessarily broad, no attempt is made in this bulletin to treat it exhaustively; rather the bulletin aims to point out what has been done by operators in the past, and to describe various fire-prevention methods and fire-fighting apparatus which are being used or adopted by many of the larger oil companies. These methods and apparatus, it is believed, if universally employed by operators, will largely decrease the present enormous annual losses."
Date:
1920
Creator:
Bowie, C. P.
Object Type:
Report
System:
The UNT Digital Library
Manganese: Uses, Preparation, Mining Costs and the Production of Ferro-Alloys
From Introduction: "In this bulletin the reports on manganese are presented, which range in scope from the beneficiation of the ore to the utilization of the metal."
Date:
1920
Creator:
Weld, C. M.; Phalen, W. C.; Newton, Edmund; Crane, W. R.; van Barneveld, C. E.; Christianson, Peter et al.
Object Type:
Report
System:
The UNT Digital Library
Pennsylvania Mining Statutes Annotated
From Author's Explanation: "This bulletin is intended to include every legislative enactment of the Commonwealth of Pennsylvania relating to the mining and mineral industries. The entire body of mining laws is set out for these obvious reasons: (1) To show the progress and advancement made, and the changes through which the enactments have passed; (2) an author may not assume the determination of what particular laws are in fact in effect, as this is within the jurisdiction of the courts alone; (3) it was at least necessary to set out all acts that had at any time been construed by the courts."
Date:
1920
Creator:
Thompson, J. W.
Object Type:
Report
System:
The UNT Digital Library
Abstracts of Current Decisions on Mines and Mining: May to August, 1919
Bulletin issued by the U.S. Bureau of Mines: "This publication is devoted exclusively to a review and abstracts of decisions based on the laws governing the rights and duties of mine owners, operators, miners, and persons trafficking in all kinds of mining properties. It includes abstracts of current decisions of all the Federal and State courts of last resort on questions relating to the mining industries" (Bulletin 61, p. 9).
Date:
1920
Creator:
Thompson, J. W.
Object Type:
Report
System:
The UNT Digital Library
Catalog of John Tarleton Agricultural College, Summer Session 1920
Annual catalog for John Tarleton Agricultural College describing the school, admission requirements, tuition, financial aid, departments, and classes for the 1920-06 - 1920-08 summer session.
Date:
February 15, 1920
Creator:
Tarleton State College
Object Type:
Book
System:
The Portal to Texas History
Catalog of Daniel Baker College, 1919-1920
Catalog describes the governance, history, course offerings, and campus life of Daniel Baker College in Brownwood, Texas.
Date:
June 1920
Creator:
Daniel Baker College (Brownwood, Tex.)
Object Type:
Book
System:
The Portal to Texas History
Catalog of Abilene Christian College, 1920-1921
Catalog describes the governance, history, course offerings, and campus life of Abilene Christian College in Abilene, Texas.
Date:
June 1920
Creator:
Abilene Christian College
Object Type:
Book
System:
The Portal to Texas History
Oklahoma Weekly Leader (Guthrie, Okla.), Vol. 30, No. 26, Ed. 1 Thursday, August 26, 1920
Weekly newspaper from Guthrie, Oklahoma that includes local, state, and national news along with advertising.
Date:
August 26, 1920
Creator:
Niblack, Leslie G.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Oklahoma Leader (Oklahoma City, Okla.), Vol. 6, No. 38, Ed. 1 Saturday, March 27, 1920
Weekly newspaper from Oklahoma City, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 27, 1920
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Mercedes Tribune (Mercedes, Tex.), Vol. 7, No. 38, Ed. 1 Friday, November 5, 1920
Weekly newspaper from Mercedes, Texas that includes local, state, and national news along with advertising.
Date:
November 5, 1920
Creator:
Hoyt, L. T.
Object Type:
Newspaper
System:
The Portal to Texas History
Catalog of John Tarleton Agricultural College, 1919-1920
Annual catalog for John Tarleton Agricultural College describing the school, admission requirements, tuition, financial aid, departments, and classes for the 1919 - 1920 school year, with announcements for 1920 - 1921.
Date:
May 1, 1920
Creator:
Tarleton State College
Object Type:
Book
System:
The Portal to Texas History
The Oklahoma Daily (Norman, Okla.), Vol. 14, No. 101, Ed. 1 Thursday, February 26, 1920
Student newspaper of the University of Oklahoma in Norman, Oklahoma that includes local and campus news along with advertising.
Date:
February 26, 1920
Creator:
Neal, Dewey H.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Harlow's Weekly (Oklahoma City, Okla.), Vol. 18, No. 13, Ed. 1 Wednesday, March 31, 1920
Weekly newspaper from Oklahoma City, Oklahoma that includes news and commentary on local and state issues along with advertising.
Date:
March 31, 1920
Creator:
Harlow, Victor E.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
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
Catalogue of Simmons College, 1919-1920
Catalogue describes the governance, history, admission requirements, course offerings, and campus life of Simmons College in Abilene, Texas.
Date:
May 1920
Creator:
Simmons College (Abilene, Tex.)
Object Type:
Book
System:
The Portal to Texas History
The Oklahoma Leader (Oklahoma City, Okla.), Vol. 6, No. 38, Ed. 1 Saturday, March 27, 1920
Weekly newspaper from Oklahoma City, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 27, 1920
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History