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Performance of B. M. W. 185-horsepower airplane engine

Description: Report discusses the results of testing on a B.M.W. engine in an altitude chamber where temperature and pressure can be controlled to simulate flight at various altitudes. Results for various engine speeds, altitudes, and propeller speeds are provided.
Date: April 13, 1922
Creator: Sparrow, Stanwood Willston
Partner: UNT Libraries Government Documents Department

Air force and three moments for F-5-L Seaplane

Description: From Introduction: "A model of the F-5-L seaplane was made, verified, and tested at 40 miles an hour in the 8' x 8' tunnel for lift and drag, also for pitching, yawing and rolling moments. Subsequently, the yawing moment test was repeated with a modified fin. The results are reported without VL scale correction."
Date: February 1922
Partner: UNT Libraries Government Documents Department

Air reactions to objects moving at rates above the velocity of sound with application to the air propeller

Description: From Discussion: "To meet these unusual conditions three sets of ball-bearings were employed and arranged in tandem, thereby reducing their speeds by the ratio of the number of sets used, as shown in Fig.3. This proved to be a complete success. The results obtained in experiments with a two-blade, 4 foot propeller of series 2, are given in Fig. 9."
Date: November 1922
Creator: Reed, S. Albert
Partner: UNT Libraries Government Documents Department

Aerodynamic computation of gliders

Description: From Introduction: "In the following discussion, a knowledge of the theoretical principles of airplane construction is assumed, as presented in detail by Vogt and Lippisch in Nos. 7 and 10-19 of the 1919 volume of this publication. A few quantities will however be otherwise designated, in accordance with the Gottingen symbols."
Date: September 1922
Creator: Schrenk, M
Partner: UNT Libraries Government Documents Department

Airplane performance, past and present

Description: Report discussing the progress of airplane performance and measured by speed.
Date: December 1922
Creator: Warner, Edward P.
Partner: UNT Libraries Government Documents Department

Carbon Black--its Manufacture, Properties and Uses

Description: From Introduction: "Part of I of this paper cover the engineering and economic side of the industry; the other phases of the investigation which have been under the direction of G. St. J. Perrott, of the Pittsburg station of the United States Bureau of Mines, are discussed in Part II."
Date: 1922
Creator: Neal, R. O. & Perrott, G. St. J.
Partner: UNT Libraries Government Documents Department

The Technology of Slate

Description: From Introduction: "The purpose of this bulletin is to point out the most efficient methods and equipment now in use in slate quarries, to describe methods of utilizing the quarried material to best advantage, and to outline means of reducing the proportion of waste, which is now excessive."
Date: 1922
Creator: Bowles, Oliver
Partner: UNT Libraries Government Documents Department

Lessons From the Granite Mountain Shaft Fire, Butte

Description: On the night of June 8, 1917, the flame of a carbide lamp accident set fire to the uncovered and frayed insulation of an armored power cable near the 2,400-foot level of the North Butte Mining Co.'s Granite Mountain shaft. How this insulation accidentally became exposed is explained on page 15. The following pages present an attempt to draw some practical conclusions and suggestions from this disaster."
Date: 1922
Creator: Harrington, Daniel
Partner: UNT Libraries Government Documents Department

Evaporation Loss of Petroleum in the Mid-Continent Field

Description: From Introduction: "The results of the investigation, as presented in this report, indicate that loses from evaporation are so large that they should receive serious consideration at once by the industry, which should make every endeavor to reduce them to a minimum."
Date: 1922
Creator: Wiggins, J. H.
Partner: UNT Libraries Government Documents Department

Experimental Production of Alloy Steels

Description: From Introduction and Reason For Undertaking the Work: "The Bureau of Mines has recently made up experimental heats of alloy steels for the Army and Navy. The Bureau of Mines has analyzed the Army steels for its own guidance only, for analysis of the steels for the arsenal was also scheduled to be made by the arsenal, though it was not, as it happened."
Date: 1922
Creator: Gillett, H. W. & Mack, E. L.
Partner: UNT Libraries Government Documents Department

Prospecting and Testing for Oil and Gas

Description: From Introduction: "Part I of this paper discusses briefly some of the features of oil and gas accumulation and describes certain oil-field rocks and minerals. Part II deals with the kinds of tools that should be used and the information necessary for selecting proper tools. Part III discusses the accurate testing of strata for oil or gas and states principles based on conditions that have frequently existed in well drilling."
Date: 1922
Creator: Collom, R. E.
Partner: UNT Libraries Government Documents Department

Fusibility of Ash from Coals of the United States

Description: From Introduction: "Information concerning the fusibility of coal ash has become of considerable value to the consumer of coals, mainly in connection with the troublesome formation of clinker from the melting of the ash constituents of the burning coal. It is hoped that this information when used together with the large number of coal analyses published by the bureau will assist the consumer of coal in comparing different coals, and in selecting the coal best adapted for his purpose."
Date: 1922
Creator: Selvig, W. A. & Fieldner, A. C.
Partner: UNT Libraries Government Documents Department

The Analytical Distillation of Petroleum and its Products

Description: From Introduction: "The Bureau of Mines has studied apparatus and procedure for the distillation analysis of petroleum, and this report is presented as a record of developments up to the present time. The work is incomplete, but the extensive information that has been obtained to date is made available as a guide in handling laboratory distillation problems."
Date: 1922
Creator: Dean, E. W.; Hill, H. H.; Smith, N. A. C. & Jacobs, W. A.
Partner: UNT Libraries Government Documents Department

Analyses of Mine and Car Samples of Coal Collected in the Fiscal Years 1916 to 1919

Description: From Introduction: "The present bulletin presents analyses and descriptions of samples collected during the fiscal years 1916 to 1919. In order that the material in this bulletin may be used to supplement that presented in Bulletins 22, 85, and 123, the same plan of geographical classification has been followed, the analyses and descriptions of the samples being grouped in alphabetical order according to the State, country, and town near which the mines or prospects sampled are situated."
Date: 1922
Creator: Fieldner, Arno C.; Selvig, Walter A. & Paul, J. W.
Partner: UNT Libraries Government Documents Department

Natural Gas Manual for the Home

Description: Report issued by the Bureau of Mines discussing a manual written for individuals who use natural gas in the home. As stated in the introduction, "its purpose is to tell about the supply, production, and distribution of natural gas, so that the necessity for preventing waste will be better understood" (p. 1). This report includes a map, illustrations, and photographs.
Date: 1922
Creator: Cattell, R. A.
Partner: UNT Libraries Government Documents Department

Oil-Shale: An Historical, Technical, and Economic Study

Description: Report issued by the U.S. Bureau of Mines discussing studies conducted on the development of the oil-shale industry from a historical, technical, and economic perspective. Results of the studies are presented. This report includes tables, illustrations, and photographs.
Date: July 1922
Creator: Gavin, Martin J.
Partner: UNT Libraries Government Documents Department

Electric Brass Furnace Practice

Description: Report discussing 1) the pertinent information available on what electric furnaces can do to assist prospective users in selecting a furnace that fits their requirements and 2) the gradual evolution of the present commercial types of electric furnaces. Also discusses some of the fundamental principles in the design, construction, and operation of electric furnaces.
Date: July 1922
Creator: Gillett, H. W. & Mack, E. L.
Partner: UNT Libraries Government Documents Department

Safe Mechanical Equipment for Use in Shaft Sinking

Description: Technical paper issued by the Bureau of Mines over shaft sinking safety. Safe mechanical equipment and procedures are discussed. This paper includes illustrations.
Date: May 1922
Creator: Kudlich, R. H.
Partner: UNT Libraries Government Documents Department

Electric Brass Furnace Practice

Description: Report issued by the Bureau of Mines discussing the use of electric furnaces for melting brass, and other nonferrous alloys. Monetary benefits, health benefits, and other advantages of using electric furnaces are presented. Descriptions of furnaces and their operational methods are also presented. This report includes tables, illustrations, and photographs.
Date: 1922
Creator: Gillett, H. W. & Mack, E. L.
Partner: UNT Libraries Government Documents Department

The Producing Horizon in the Rios Well in Caldwell County

Description: Report describing the geological structures and formations in Caldwell County, Texas. These include oil production.
Date: 1922
Creator: Sellards, E. H. (Elias Howard), 1875-1961
Partner: UNT Libraries Government Documents Department

Performance of B. M. W. 185-Horsepower Airplane Engine

Description: "This report deals with the results of a test made upon a B. M. W. Engine in the altitude chamber of the Bureau of Standards, where controlled conditions of temperature and pressure can be made to simulate those of the desired altitude. A remarkably low value of fuel consumption - 041 per B. H. P. hour - is obtained at 1,200 revolutions per minute at an air density of 0.064 pound per cubic foot and a brake thermal efficiency of 33 per cent and an indicated efficiency of 37 per cent at the above speed and density. In spite of the fact that the carburetor adjustment does not permit the air-fuel ratio of maximum economy to be obtained at air densities lower than 0.064, the economy is superior to most engines tested thus far, even at a density lower than 0.064, the economies superior to most engines tested thus far, even at a density (0.03) corresponding to an altitude of 25,000 feet" (p. 1).
Date: 1922
Creator: Sparrow, S. W.
Partner: UNT Libraries Government Documents Department

Preparation and Uses of Tar and its Simple Crude Derivatives

Description: Technical paper issued by the Bureau of Mines over studies of coal tars. As stated in the introduction, "this paper discusses the uses to which some of the various tars are put and shows briefly the usual methods of working up tar into some of its simple or easily prepared derivatives, for which a market can generally be found" (p. 5). This paper includes tables, illustrations, and photographs.
Date: February 1922
Creator: Odell, W. W.
Partner: UNT Libraries Government Documents Department

Recent Progress in the Thawing of Frozen Gravel in Placer Mining

Description: Technical paper issued by the Bureau of Mines over progress made for thawing gravel in placer mines. Different thawing tests are presented and discussed. This paper includes tables, photographs, and illustrations.
Date: June 1922
Creator: Janin, Charles
Partner: UNT Libraries Government Documents Department