Resource Type
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Serial/Series Title
NACA Technical Memorandums
43
NACA Technical Notes
28
Farmers' bulletin (United States. Department of Agriculture)
12
NACA Aircraft Circulars
11
NACA Technical Reports
11
Farmers' bulletin (United States. Dept. of Agriculture)
5
United States Bureau of Mines Reports
4
National Bureau of Standards Reports
3
Annual Report of the Boy Scouts of America
2
House document (United States. Congress. House)
2
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249 Matching Results
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Condenser for Cotton-Presses.
Patent for "Improvements in Condensers for Cotton-Presses," (lines 6-7) including illustrations. The invention is designed with cotton bale presses in mind, specifically the "condenser or bat forming device" (line 11).
Date:
May 24, 1921
Creator:
Taft, John A.
Object Type:
Patent
System:
The Portal to Texas History
Contribution to the Technique of Landing Large Airships: Part 1
Many treatises in regard to construction of airship sheds are lacking in data on air currents, for which reason this phase of the problem will be here thoroughly discussed in connection with the accompanying photographs of currents.
Date:
May 1929
Creator:
Krell, O.
Object Type:
Report
System:
The UNT Digital Library
Contribution to the Technique of Landing Large Airships: Part 2
Memorandum presenting a description of the development of the mooring mast and how it contributes to the technique of landing large airships. Some of its fundamental requirements and how it can factor into safe landings are provided.
Date:
May 1929
Creator:
Krell, O.
Object Type:
Report
System:
The UNT Digital Library
Control of potato-tuber diseases.
Describes various potato-tuber diseases, as well as the various methods of control of these diseases.
Date:
May 1926
Creator:
Shapovalov, Michael. & Link, George K. K. (George Konrad Karl), b. 1888.
Object Type:
Book
System:
The UNT Digital Library
Corrosion Embrittlement of Duralumin. VI: The Effect of Corrosion Accompanied by Stress on the Tensile Properties of Sheet Duralumin
The effect of corrosion on the tensile properties of duralumin while stressed is shown in graphical form. According to the test results, duralumin sheet, coated with aluminum, maintains its initial properties unimpaired for corrosion periods as long as 60 days with an applied tensile stress as high as 20,000 lb/sq.in., which is approximately one-half the stress corresponding to the yield point as defined here. In these tests, that material which had been heat-treated by being quenched in cold water, though far inferior to similar material having the aluminum coating, was superior to the sheet material which was heat treated by being quenched in hot water.
Date:
May 1929
Creator:
Rawdon, Henry S.
Object Type:
Report
System:
The UNT Digital Library
Cotton-Chopper
Patent for treating soil for agricultural purposes. This invention destroys the ridges used for planting and growing cotton and also cultivating the soil in the vicinity of the ridges.
Date:
May 11, 1920
Creator:
Kriel, John J. & Kriel, Otto J.
Object Type:
Patent
System:
The Portal to Texas History
Cotton-Cultivator.
Patent for an improved cultivator used for tillage when the plows are not in the ground. The cultivator can also lighten the heaviness felt by the operator while the plow is being used.
Date:
May 17, 1921
Creator:
Barnett, James Samuel
Object Type:
Patent
System:
The Portal to Texas History
Cotton-dusting machinery.
A guide to selecting farm machinery for dusting cotton crops.
Date:
May 1923
Creator:
Johnson, Elmer.; Howard, S. T. (Styles Trenton), 1877- & Coad, B. R.
Object Type:
Book
System:
The UNT Digital Library
Coupling.
Patent for a coupling to be used by military vehicles, unique in its "simplicity, rapidity in attachment and detachment, strength and durability" (lines 19-21).
Date:
May 24, 1921
Creator:
Speece, Russell. W.
Object Type:
Patent
System:
The Portal to Texas History
Covertible Stock and Freight Car.
Patent for an improved process of constructing convertible stock and freight train cars, including illustrations.
Date:
May 4, 1920
Creator:
Wyatt, Everett
Object Type:
Patent
System:
The Portal to Texas History
Crude-Oil Burner.
Patent for an improvement on a crude oil burner that can adapt to various grades of crude oil as well as providing intense heat to various sizes of boilers.
Date:
May 11, 1920
Creator:
Runyan, Benjamin F.
Object Type:
Patent
System:
The Portal to Texas History
Cultivator-Fender.
Patent for an improvement to cultivator-fenders that prevents rocks and other debris from being throws about while plowing.
Date:
May 10, 1921
Creator:
Calk, Alonzo E.
Object Type:
Patent
System:
The Portal to Texas History
Curves Showing Column Strength of Steel and Duralumin Tubing
Given here are a set of column strength curves that are intended to simplify the method of determining the size of struts in an airplane structure when the load in the member is known. The curves will also simplify the checking of the strength of a strut if the size and length are known. With these curves, no computations are necessary, as in the case of the old-fashioned method of strut design. The process is so simple that draftsmen or others who are not entirely familiar with mechanics can check the strength of a strut without much danger of error.
Date:
May 1929
Creator:
Ross, Orrin E.
Object Type:
Report
System:
The UNT Digital Library
Cylindrical Structure
Patent for improvements for hollow structures of cylindrical shape that provides "for formation of such a structure of lumber and metal materials of standard dimensions and shapes that ordinarily can be obtained from commercial stocks, so that the minimum amount of shop work on materials will be required." (lines 18-22)
Date:
May 11, 1920
Creator:
Pearson, Terrell Brooks
Object Type:
Patent
System:
The Portal to Texas History
A Dangerous Seaplane Landing Condition
"A peculiar phenomena in seaplane landing is observed and reported. The seaplane having executed a normal fast landing at low incidence, a forward movement of the control stick effected an unusual condition in that the seaplane left the water suddenly in an abnormal attitude. The observations describing this phenomena are offered as a warning against possible accident and as a conjectural cause of seaplane landing accidents of a certain kind" (p. 1).
Date:
May 1928
Creator:
Carroll, Thomas
Object Type:
Report
System:
The UNT Digital Library
Determining the Velocity Distribution in the Boundary Layer of an Airfoil Fitted With a Rotary Cylinder
In the closer investigation of the results obtained from a wing model with a rotary cylinder mounted in its leading edge (NACA TM's 307 and 354), the velocity distribution in the vicinity of the surface of the model was determined by a hot-wire anemometer. The results confirmed the belief that the rotary cylinder had considerable effect on the air flow, but demonstrated the fact that the direct influence of the cylinder is confined to a very thin layer in immediate proximity to the surface.
Date:
May 1927
Creator:
Van der Hegge Zijnen, B. G.
Object Type:
Report
System:
The UNT Digital Library
Device for Extracting Automobiles from Mud, Sand, or Ditches
Patent for a retractable device to lift and advance a vehicle over obstructions. The device can be operated from the drivers seat and can mover the vehicle forward or backward (p. 1, line 19-21).
Date:
May 18, 1920
Creator:
Nash, William A.
Object Type:
Patent
System:
The Portal to Texas History
Discharge Device for Cotton-Seed Unloaders.
Patent for a discharge device in which cotton seed can be unloaded to an elevator, conveyer, or elsewhere. The invention also has the ability to clean and cool the cotton seed while being unloaded, also making it dry which makes it in better condition for storing.
Date:
May 18, 1920
Creator:
Golloher, Charles H.
Object Type:
Patent
System:
The Portal to Texas History
Discussion of problems relating to the safety of aviation. Part 1
The object of the present treatise is to examine the present status of aerial safety and to review the efforts of various commissions to promote safety.
Date:
May 1928
Creator:
Sabatier, J.
Object Type:
Report
System:
The UNT Digital Library
Discussion of problems relating to the safety of aviation. Part 2
This report focuses on structural strength and engine design in building and designing safer aircraft.
Date:
May 1928
Creator:
Sabatier, J.
Object Type:
Report
System:
The UNT Digital Library
Draft Attachment for Motor-Vehicles.
Patent for a draft attachment by which a motor vehicle may "pull itself free when its traction wheels have become embedded in a soft or muddy road" (lines 14-16).
Date:
May 17, 1921
Creator:
Worsham, Louis W.
Object Type:
Patent
System:
The Portal to Texas History
Drag
Patent for a ground drag for "grading and removing refuse from the surface of the soil" (lines 10-12) that can be steered and that can gather and dispose of the dirt it levels off, including illustrations.
Date:
May 11, 1920
Creator:
Nelson, Charley E.
Object Type:
Patent
System:
The Portal to Texas History
The effect of cowling on cylinder temperatures and performance of a Wright J-5 engine
This report presents the results of tests conducted to determine the effect of different amounts and kinds of cowling on the performance and cylinder temperatures of a standard Wright J-5 engine. These tests were conducted in conjunction with drag and propeller tests in which the same cowlings were used. Four different cowlings were investigated varying from the one extreme of no cowling on the engine to the other extreme of the engine completely cowled and the cooling air flowing inside the cowling through an opening in the nose and out through an annular opening at the rear of the engine. Each cowling was tested at air speeds of approximately 60, 80, and 100 miles per hour.
Date:
May 2, 1929
Creator:
Schey, Oscar W. & Biermann, Arnold E.
Object Type:
Report
System:
The UNT Digital Library
The Effect of Wind Tunnel Turbulence Upon the Forces Measured on Models
These tests were undertaken to find the effect of turbulence in the air stream upon the lift and drag forces measured on models in the four-foot wind tunnel at the Massachusetts Institute of Technology. Maximum lifts and minimum drags were measured on Gottingen-387 and R.A.F.-15 airfoils, minimum drag on a streamlined strut, and the static pressure gradients for different conditions of turbulence were investigated. The results show that the scale of the turbulence (as defined in this report) has a marked effect upon the measured forces on models tested in the tunnel as well as on the pressure gradient, and it is recommended that further investigation of the phenomena be made with the aid of smoke and small wind vanes.
Date:
May 1924
Creator:
LePage, W. L. & Nichols, J. T.
Object Type:
Report
System:
The UNT Digital Library