Baby Net Frame. (open access)

Baby Net Frame.

Patent for a frame that can support a baby net and can be collapsed for easy storage. The frame also features components that prevent collapse and provide stability when in use.
Date: June 6, 1922
Creator: Akers, Blessie E.
Object Type: Patent
System: The Portal to Texas History
Coal-Dust Explosion Tests in the Experimental Mine 1913-1918, Inclusive (open access)

Coal-Dust Explosion Tests in the Experimental Mine 1913-1918, Inclusive

Report issued by the Bureau of Mines over experiments conducted on coal-dust explosions. The results of the experiments are presented and discussed. This report includes tables, illustrations, and photographs.
Date: June 1922
Creator: Rice, George S.; Jones, Lewis M.; Egy, Willard Leo & Greenwald, H. P.
Object Type: Report
System: The UNT Digital Library
Comfort in Flight (open access)

Comfort in Flight

Some advances in passenger comfort are discussed, namely, ventilated cabins, heating, seating arrangements, and doors.
Date: June 1922
Creator: Warner, Edward P.
Object Type: Report
System: The UNT Digital Library
Comparing Maximum Pressures in Internal Combustion Engines (open access)

Comparing Maximum Pressures in Internal Combustion Engines

Thin metal diaphragms form a satisfactory means for comparing maximum pressures in internal combustion engines. The diaphragm is clamped between two metal washers in a spark plug shell and its thickness is chosen such that, when subjected to explosion pressure, the exposed portion will be sheared from the rim in a short time.
Date: June 1922
Creator: Sparrow, Stanwood W. & Lee, Stephen M.
Object Type: Report
System: The UNT Digital Library
Core-Taking Device (open access)

Core-Taking Device

Patent for improvements to a core-taking device which will "form a core, in the process of drilling, and embodies means for severing the core, when formed, and retaining the same in the core barrel until, it is withdrawn for inspection" (lines 13-17), including illustrations.
Date: June 20, 1922
Creator: Christian, Walton G.
Object Type: Patent
System: The Portal to Texas History
Effect of Structure in Middle Part of Leading Edge of a Thick Wing: Communication From Rijks-Studiedienst Voor De Luchtvaart of Amsterdam (open access)

Effect of Structure in Middle Part of Leading Edge of a Thick Wing: Communication From Rijks-Studiedienst Voor De Luchtvaart of Amsterdam

The experiments herein described were made for the purpose of finding whether removing a larger portion of the wing to improve the pilot's view would be possible, without too great detriment to the aerodynamic properties of the airplane. The experiments were conducted on a wing similar to the Fokker F III.
Date: June 1922
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Engine Pistons of Light Metal (open access)

Engine Pistons of Light Metal

This report presents the results of testing 32 sets of light metal pistons from 16 different aluminum and magnesium alloys, 2 sets of cast iron pistons, and one piston of pure electrolytic copper. The many-fold mutual relations between material properties, shape, thermic and dynamic processes in the engine were clarified by comprehensive technical, thermic, chemical, physical and metallographic investigations of pistons and piston materials.
Date: June 1922
Creator: Becker, G.
Object Type: Report
System: The UNT Digital Library
Fakir Fuel Pump (open access)

Fakir Fuel Pump

"In designing the Fakir fuel pump, the fundamental idea was to obtain a simple and reliable method of conveying the fuel from a low tank to the carburetor, with the avoidance of the faults of all former methods and the simultaneous warming of the fuel by means of the heat of compression generated. The principle of the Fakir fuel pump rests on the well-known principle of the diaphragm pump, which must be suitably adapted to the present purpose" (p. 1).
Date: June 1922
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Geology of the Wiles Area Ranger District, Texas (open access)

Geology of the Wiles Area Ranger District, Texas

This report describes the economic geology of the Wiles area Ranger District, Texas.
Date: June 28, 1922
Creator: Dobbin, Carroll E.
Object Type: Report
System: The UNT Digital Library
Insect Destroyer. (open access)

Insect Destroyer.

Patent for an wheeled vehicle mounted insect destroyer that brushes insects from plants and destroys them utilizing flames, includes illustrations.
Date: June 13, 1922
Creator: Franks, John L.
Object Type: Patent
System: The Portal to Texas History
Lecture on the Rhon soaring flight competition, 1921 (open access)

Lecture on the Rhon soaring flight competition, 1921

This article presents a recounting of the Rhon soaring competition with emphasis on new designs, results, and prizes awarded. A round-robin discussion is also included at the end of the report.
Date: June 1922
Creator: Hoff, Wilhelm
Object Type: Report
System: The UNT Digital Library
Mop (open access)

Mop

Patent for "a simple and durable construction of mop in which the fibre holding element consists of strands of twisted wire" (lines 9-11) designed such that the mop maintains its shape with or without the handle, including illustrations.
Date: June 20, 1922
Creator: Welch, James. S.
Object Type: Patent
System: The Portal to Texas History
Notes on the standard atmosphere (open access)

Notes on the standard atmosphere

From Summary: "This report contains the derivation of a series of relations between temperature, pressure, density, and altitude in a standard atmosphere which assumes a uniform decrease of temperature with altitude. The equations are collected and given with proper constants in both metric and English units for the temperature gradient adopted by the National Advisory Committee for Aeronautics. A table of values of temperature pressure and density at various altitudes in this standard atmosphere is included in the report."
Date: June 1922
Creator: Diehl, Walter S.
Object Type: Report
System: The UNT Digital Library
Problem of the Slotted Wing: A Communication From the Aerodynamic Institute of the Aachen Technical High School (open access)

Problem of the Slotted Wing: A Communication From the Aerodynamic Institute of the Aachen Technical High School

"It is to be expected that the advantageous properties, hitherto discovered in many slotted wing sections, depend very largely on the contour of the slot and the structural details of the wing. It is therefore of interest, aside from measurements on wings of constant cross-section along the span, to measure also wing models in which the structural details have already been given practical consideration" (p. 1).
Date: June 1922
Creator: Klemperer, W.
Object Type: Report
System: The UNT Digital Library
The Prospects of the Helicopter (open access)

The Prospects of the Helicopter

The advantages of helicopters are listed along with a discussion of safety devices, the problems of control, and the need for horizontal flight.
Date: June 1922
Creator: Warner, Edward P.
Object Type: Report
System: The UNT Digital Library
The R-38 Catastrophe and the Mechanics of Rigid Airship Construction (open access)

The R-38 Catastrophe and the Mechanics of Rigid Airship Construction

An airship frame may be regarded as a rigid girder subjected to a number of forces which, according to their nature, may be classified as follows: weight or loads (force of gravity); lifting forces (aero-static); accelerations (dynamic). These forces must be in equilibrium in the three most important cases during flight: 1) when the airship is floating (aerostatic problem); 2) when flying without acceleration (aerodynamic problem). 3) When under the influence of any accelerating force (dynamic problem). This report will briefly discuss each of these cases in regard to the R-38 airship accident.
Date: June 1922
Creator: Herrera, Emilio
Object Type: Report
System: The UNT Digital Library
Recent Progress in the Thawing of Frozen Gravel in Placer Mining (open access)

Recent Progress in the Thawing of Frozen Gravel in Placer Mining

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
Object Type: Report
System: The UNT Digital Library
Refrigerator (open access)

Refrigerator

Patent for improvements for vacuum refrigerators such that cold air circulation and heat exclusion are improved, including illustrations.
Date: June 27, 1922
Creator: Knutson, William K.
Object Type: Patent
System: The Portal to Texas History
Simple formula for estimating airplane ceilings (open access)

Simple formula for estimating airplane ceilings

From Summary: "The aeronautical engineer often has occasion to estimate the absolute ceiling of an airplane for which a detailed performance calculation is out of the question. In such cases it is customary to use either empirical performance charts or formulae. The performance charts given in several of the recent works on aeronautics are satisfactory so long as the airplane under consideration does not depart too far from the average in its characteristics. The formulae, with one exception, are no better. Given here is that exception, with indications of which terms of the formula may be neglected without seriously affecting the results, thus simplifying the task."
Date: June 1922
Creator: Diehl, Walter S.
Object Type: Report
System: The UNT Digital Library
Theory of the Slotted Wing (open access)

Theory of the Slotted Wing

Report presenting information regarding the use of slots in an airplane wing to considerably increase the lift and make it possible to operate the wing at higher angles of attack.
Date: June 1922
Creator: Betz, A.
Object Type: Report
System: The UNT Digital Library
Trap. (open access)

Trap.

Patent for a small animal trap that prevents injury to the animal. When the animals step on the pedal inside the enclosure, a door is automatically dropped. The animal is trapped inside the enclosure.
Date: June 27, 1922
Creator: Dinkins, Earl T.
Object Type: Patent
System: The Portal to Texas History
The World's Air Transportation Services: Data as to Passengers, Mail, and Goods Carried by American and European Transportation Services (open access)

The World's Air Transportation Services: Data as to Passengers, Mail, and Goods Carried by American and European Transportation Services

This report presents detailed descriptions, statistics, and graphs on European and American air transport. The European countries listed are Belgium, Czecho-Slovakia, Denmark, France, Germany, Great Britain, Holland, and Italy.
Date: June 1922
Creator: Office of Aeronautical Intelligence
Object Type: Report
System: The UNT Digital Library