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Report of the Standing Committee of Murchison Lodge No. 80
Financial report of the Standing Committee of the Murchison Lodge No. 80 from January 1856 to December 1856. The report includes a summary of recommendations by the committee members, "John Harrell," "T. H. Streich," and "J. M[..]lly,"and a list of the dues from each member, the amount in arrears, and the cash on hand for the organization.
Date:
December 6, 1856
Creator:
Harrell, John & Streich, T. H.
System:
The Portal to Texas History
[Comptroller Taxes, December 18, 1880]
Comptroller taxes of 1880 by Levi Perryman of Montague County. Lists the debts and credits within the county.
Date:
December 18, 1880
Creator:
Perryman, Levi
System:
The UNT Digital Library
[Texas] Annual Report on Quarantine: 1882
Annual report from the Texas Department of State Health Services discussing the state of quarantine activities and recommendations regarding further laws and funding.
Date:
December 1882
Creator:
Swearingen, R. M.
System:
The Portal to Texas History
[American Shrews]
Brief summary of three genera of American shrews, including characteristics, habits, habitat, and skull, jaws, and teeth illustrations.
Date:
December 31, 1895
Creator:
Merriam, C. Hart & Miller, Gerrit S. (Gerrit Smith), 1869-1956
System:
The UNT Digital Library
[Railroad Proposal]
Proposal for a new railroad from Comanche, Texas to Temple, Texas. The documents included contain information on the cost of construction, route, possibilities for extensions, projected revenue, and Texas laws pertaining to railroads.
Date:
December 27, 1906
Creator:
Holman, J. R.
System:
The Portal to Texas History
Graphic Studies of Ultimate Analyses of Coals
Technical paper issued by the Bureau of Mines over studies of analyses of coals. The results are discussed and presented on various diagrams. This paper includes tables, and illustrations.
Date:
December 1915
Creator:
Ralston, Oliver C. & Porter, Horace C.
System:
The UNT Digital Library
Quarry Accidents in the United States During the Calendar Year 1915
Technical paper issued by the Bureau of Mines over the quarry accidents during the year of 1915 in the U.S. The locations and types of quarry accidents are presented. This paper includes tables.
Date:
December 1916
Creator:
Fay, Albert H.
System:
The UNT Digital Library
Abstracts of Current Decisions on Mines and Mining: May to August, 1917
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:
December 1917
Creator:
Thompson, J. W.
System:
The UNT Digital Library
Abstracts of Current Decisions on Mines and Mining: May to August, 1917
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:
December 1917
Creator:
Thompson, J. W.
System:
The UNT Digital Library
Abstracts of Current Decisions on Mines and Mining: May to August, 1917
Report issued by the Bureau of Mines over mining decisions made between May and August of 1917. Details of the decisions are presented and discussed.
Date:
December 1917
Creator:
Thompson, Joseph Wesley
System:
The UNT Digital Library
Toluol Recovery
Technical paper issued by the Bureau of Standards over toluol-recovery, known as light oil. The methods used in the toluol-recovery are presented and discussed. This paper includes tables, and illustrations.
Date:
December 19, 1918
Creator:
McBride, R. S.; Reinicker, C. E. & Dunkley, W. A.
System:
The UNT Digital Library
Thermal Expansion of Insulating Materials
Scientific paper issued by the Bureau of Standards over studies on thermal expansion. Expansivity tests are conducted on many different insulating materials. The results of the tests are discussed. This paper includes tables, photographs, and illustrations.
Date:
December 27, 1919
Creator:
Souder, Wilmer H. & Hidnert, Peter
System:
The UNT Digital Library
Design of Recording Wind Tunnel Balances
Given here is a description of the design of a scientific recording wind tunnel balance. It was decided that the most satisfactory arrangement would be a rigid ring completely surrounding the tunnel or wind stream, so that the model could be supported from it by wires or any arrangement of spindles. The forces and moments acting on this ring can then be recorded by suitable weighing apparatus. The methods available for recording forces on the arms are explained. The proposed type of balance will support the model rigidly in a variety of ways, will make a complete test without attention, and will plot the results so that all computations are avoided.
Date:
December 1920
Creator:
Norton, F. H.
System:
The UNT Digital Library
High thermal efficiency in airplane service
Described here is a method by which high average fuel economy has been achieved in aircraft engines. Details are given of the design of certain foreign engines that employ an unusual type of fuel-air ratio control in which the change in power produced by a mixture change is due almost entirely to the change in the power producing ability of the unit weight of the mixture. The safety and performance features of this type of control are explained.
Date:
December 1920
Creator:
Sparrow, S. W.
System:
The UNT Digital Library
Instrument for measuring engine clearance volumes
With the advent of the V type engine, a new method to measure the clearance volume in cylinders was needed. It was suggested that this measurement could be made by a process which consisted essentially of simultaneously changing both a known and unknown volume of gas by a known amount and then calculating the magnitude of the unknown from the resulting difference in pressure between the two. An instrument based on this design is described.
Date:
December 1920
Creator:
Sparrow, S. W.
System:
The UNT Digital Library
Progress Made in the Construction of Giant Airplanes in Germany During the War
The construction of giant airplanes was begun in Germany in August, 1914. The tables annexed here show that a large number of airplanes weighing up to 15.5 tons were constructed and tested in Germany during the War, and it is certain that no other country turned out airplanes of this weight nor in such large numbers. An examination of the tables shows that by the end of the War all the manufacturers had arrived at a well-defined type, namely an airplane of about 12 tons with four engines of 260 horsepower each. The aircraft listed here are discussed with regard to useful weight and aerodynamic qualities.
Date:
December 1920
Creator:
Baumann, A.
System:
The UNT Digital Library
The Steadiness Factor in Engine Sets
Technical notes discussing the steadiness factor in engines and the calculations that can be used to arrive at it. Factors affecting the steadiness factor are detailed, including the mass of parts, torque, engine rotation, and power.
Date:
December 1920
Creator:
Margoulis, W.
System:
The UNT Digital Library
A Variable Speed Fan Dynamometer
Fan brakes used as absorption dynamometers in testing internal combustion engines have the disadvantage that a given fan will run only at one speed when the engine is delivering full power. In order to be able to vary the speed at which a given power will be absorbed, English manufacturers have for some time been using a cylindrical housing around the fan with one or two variable openings in the periphery. Here, results are given of tests conducted to determine how great a range of speed can be obtained from such a device.
Date:
December 1920
Creator:
Wood, Karl D.
System:
The UNT Digital Library
Dependence of Propeller Efficiency on Angle of Attack of Propeller Blade
In order to determine the maximum and the most favorable pitch for a propeller, it was found desirable to investigate the dependence of propeller efficiency on the angle of attack of the propeller blade. The results of a few experiments are given to show that propeller blades conduct themselves just like airplane wings with reference to the dependence of their efficiency on their angle of attack.
Date:
December 1921
Creator:
Borck, Hermann
System:
The UNT Digital Library
Destructive Distillation of Mixtures of Oil and Coal
Report issued by the U.S. Bureau of Mines on the characteristics and behavior of oil and coal distillation processes. The effectiveness of the distillation processes and the properties of the oil and coal mixtures are presented. This report includes tables, graphs, and illustrations.
Date:
December 1921
Creator:
Davis, Joseph D.; Place, Palmer B. & Scott, G. S.
System:
The UNT Digital Library
Effects of Varying the Relative Vertical Position of Wing and Fuselage
"The object of this series of experiments was to determine the influence of the relative vertical position of wing and fuselage on the efficiency of the wing. Since the longitudinal position of the wing can be varied but slightly with reference to the center of gravity in a normal airplane, it was kept constant in the experiments to be described and only the vertical position of the wing with reference to the fuselage was varied" (p. 1).
Date:
December 1921
Creator:
Prandtl, L.
System:
The UNT Digital Library
Ground Influence on Aerofoils
The question of ground influence on airplanes has recently attracted some attention in view of the claims made by certain designers that the landing speed of their airplanes is much decreased by an increase in lift coefficient due to the proximity of the ground in landing. The results of wind tunnel tests indicate that ground effect is not entirely beneficial. It decreases the landing speed and cushions the landing shock somewhat. However, it does so at the expense of an increased length of preliminary skimming over the ground.
Date:
December 1921
Creator:
Raymond, Arthur E.
System:
The UNT Digital Library
A Mechanical Device for Illustrating Airplane Stability
An instrument is described which will illustrate completely in a qualitative sense the longitudinal stability characteristics of an airplane. The instrument is primarily of use for the lecture room, but it is hoped that ultimately it will be possible to obtain quantitative results from it.
Date:
December 1921
Creator:
Norton, F. E.
System:
The UNT Digital Library
Mutual Influence of Wings and Propeller
Report presenting an experiment consisting of an aerofoil and propeller in order to discover the mutual influence between the two components and variations in moment due to the propeller influence.
Date:
December 1921
Creator:
Prandtl, L.
System:
The UNT Digital Library