Motor trucks on eastern farms. (open access)

Motor trucks on eastern farms.

Describes the use of motor trucks on farms in the eastern United States and evaluates costs and benefits.
Date: July 1921
Creator: Tolley, H. R. (Howard Ross), 1889-1958 & Church, L. M. (Lillian M.), 1872-1939
Object Type: Book
System: The UNT Digital Library
Boll Weevil Catcher (open access)

Boll Weevil Catcher

The objective of the invention is to improve to catching and destroying boll weevils with a device that is easily attached to a cultivator. This device includes "receptacles filled with an insect destroying liquid." (lines 23-24).
Date: July 5, 1921
Creator: Ploch, Alex
Object Type: Patent
System: The Portal to Texas History
The Drawing of Experimental Curves (open access)

The Drawing of Experimental Curves

This report presents a discussion of how to determine the location of a line or surface from experimental data. What we desire to know practically is the number of ordinates required to obtain a certain probable precision in drawing a line or surface.
Date: July 1921
Creator: Norton, F. H.
Object Type: Report
System: The UNT Digital Library
Abacus for the Reduction of English Measures to the Metric System and Vice Versa (open access)

Abacus for the Reduction of English Measures to the Metric System and Vice Versa

This report presents a description of an abacus with three scales: one for English measures, one for metric measures, and one with the "points of reduction", as well as construction details. There is also a detailed description on how to use the abacus.
Date: July 1921
Creator: Tenani, Mario
Object Type: Report
System: The UNT Digital Library
Flexible Petrol Pipe (open access)

Flexible Petrol Pipe

Report presenting an examination of flexible piping and some of the difficulties involved in creating satisfactory flexible pipe. The joint used to assist in the flexibility of the pipe is illustrated and described.
Date: July 1921
Creator: unknown
Object Type: Report
System: The UNT Digital Library
The Problem of Fuel for Aviation Engines (open access)

The Problem of Fuel for Aviation Engines

Note presenting the physical properties which may be demanded of fuels for aviation use and the means that may be adopted by the engine manufacturers to properly meet the demands necessitated by the use of the fuel. Some of the factors that must be considered include its composition, the quantity available, the price per heat unit, and the possibility of keeping stocks in aerial ports both at home and abroad.
Date: July 1921
Creator: Kutzbach & James, W. S.
Object Type: Report
System: The UNT Digital Library
The Caproni Seaplane (open access)

The Caproni Seaplane

The Caproni Company recently built a seaplane of unusual design. The main supporting surfaces consisted of three triplanes in tandem, the lower wings being attached to the hull, which was described as providing accommodation for a hundred passengers. On one of the first flights, the seaplane fell into a lake, nose down, and was destroyed. The authors wish to show that this failure could have been predicted.
Date: July 1921
Creator: Munk, Max
Object Type: Report
System: The UNT Digital Library
The Dynamometer Hub for the Testing Propellers and Engines During Flight (open access)

The Dynamometer Hub for the Testing Propellers and Engines During Flight

The need for a device to measure flight resistance, engine and propeller power, and efficiency during flight grew in proportion to the demand for increased flying capacity in military types of aircraft. Here, a dynamometer hub was inserted between the engine and the propeller. Taken as a whole, the tests that were conducted show that though the dynamometer is a sensitive instrument liable to numerous derangements, it is undeniably useful even in its present form, when handled with care and skill.
Date: July 1921
Creator: Enoch, O.
Object Type: Report
System: The UNT Digital Library
Theory of the ideal windmill (open access)

Theory of the ideal windmill

Report presenting the theory of the ideal propeller, which is important for solving the problem of the action of propellers. Several different theories of propeller action are described and compared to determine which ones seem to be the most accurate.
Date: July 1921
Creator: Hoff, Wilhelm
Object Type: Report
System: The UNT Digital Library
Laboratory Studies of the Trent Process (open access)

Laboratory Studies of the Trent Process

Report issued by the U.S. Bureau of Mines detailing the laboratory-scale tests of the efficiency of the Trent process in cleaning coal, in which powdered coal, water, and oil is agitated or beaten together to remove impurities. The report includes details in tables detailing the efficiency varying the type and amounts of coal, oil, and water on the process.
Date: July 1921
Creator: Perrott, G. St. John & Kinney, Selwyne Perez
Object Type: Report
System: The UNT Digital Library
U.S. Bureau of Standards Annual Report: 1921 (open access)

U.S. Bureau of Standards Annual Report: 1921

Report describing the functions and operations of the United States Bureau of Commerce and its divisions during the fiscal year.
Date: July 1921
Creator: United States. Bureau of Standards.
Object Type: Report
System: The UNT Digital Library
Eyeglass Mounting (open access)

Eyeglass Mounting

Patent for the creation of new and useful improvements in eyeglass mounting.
Date: July 1, 1921
Creator: Henderson, W. T
Object Type: Patent
System: The Portal to Texas History
Antileak Composition. (open access)

Antileak Composition.

Patent for improvements in antileak composition in order to prevent leaks in liquid holding containers like radiators, boilers, etc.
Date: July 5, 1921
Creator: Shrum, Will N.
Object Type: Patent
System: The Portal to Texas History
Game-Board. (open access)

Game-Board.

Patent for a game board that includes barriers, inclines, and depressions in the board which is meant to simulate a game similar to baseball (as well as other games) using a cue ball. The game board also comes with auxiliary barriers to adjust gameplay.
Date: July 12, 1921
Creator: Sterling, Don L.
Object Type: Patent
System: The Portal to Texas History
Fire-Extinguisher for Aeroplanes and the Like. (open access)

Fire-Extinguisher for Aeroplanes and the Like.

Patent for a fire extinguisher apparatus to be used in air crafts, boats, and other vehicles designed to be lightweight and to quickly extinguish fires.
Date: July 5, 1921
Creator: Clark, Walter C.
Object Type: Patent
System: The Portal to Texas History
Sleeve-Puller. (open access)

Sleeve-Puller.

Patent for simple and inexpensive sleeve puller, primarily for "pulling sleeves from the rear axle housing of a motor vehicle" (lines 13-14), with illustrations.
Date: July 12, 1921
Creator: Wilson, Joseph H.
Object Type: Patent
System: The Portal to Texas History
Self-Lining Interlocking Building-Block. (open access)

Self-Lining Interlocking Building-Block.

Patent for interlocking building-blocks that allow for the formation of strong insulated and properly lined walls without the use of skilled labor and with or without reinforcements.
Date: July 12, 1921
Creator: Merren, John Jay
Object Type: Patent
System: The Portal to Texas History
Strap Binder or Lock and Record-Check. (open access)

Strap Binder or Lock and Record-Check.

Patent for an improved strap-binder or lock and record-check that is "simple, effective, and comparatively inexpensive" to manufacture (lines 8-11).
Date: July 7, 1921
Creator: Glisson, Amos A.
Object Type: Patent
System: The Portal to Texas History
Box Bull and Calf Wheel Gudgeon. (open access)

Box Bull and Calf Wheel Gudgeon.

Patent for protection and strengthening of box bull and calf wheel gudgeons. The purpose is to prevent various troubles with well drilling (oil, etc.).
Date: July 19, 1921
Creator: Taylor, James Thomas
Object Type: Patent
System: The Portal to Texas History
Rubber Razor. (open access)

Rubber Razor.

Patent for a rubber razor. The rubber razor provides a flexible support for multiple blade and will allow the blades to contour to one's face.
Date: July 5, 1921
Creator: Billingsley, Rennie E.
Object Type: Patent
System: The Portal to Texas History
Feeder for Soft Candy. (open access)

Feeder for Soft Candy.

Patent for bee feeder device that allows bees to have access to food during transport. The feeder also is designed to prevent any running and clogging, while minimizing bee death due to starvation.
Date: July 12, 1921
Creator: Ault, Eugene B.
Object Type: Patent
System: The Portal to Texas History
Ironing-Board. (open access)

Ironing-Board.

Patent for an ironing board that has no legs or braces, but is securely held and provided with a cabinet that can be attached to the side of a wall or built into a wall to not take up space in the room by being placed out. Makes for easier ironing of garments, such as dresses and skirts, by allowing them to be inserted on the board.
Date: July 12, 1921
Creator: Trammell, Earl, M. & Carothers, Willam C.
Object Type: Patent
System: The Portal to Texas History
Motorcycle-Stand. (open access)

Motorcycle-Stand.

Patent for a motorcycle stand that can be released manually through a lever near the saddle to lock the stand into place until the operator unlocks it.
Date: July 21, 1921
Creator: Swenson, Carl J.
Object Type: Patent
System: The Portal to Texas History
Mower. (open access)

Mower.

Patent for a new mower designed for use with a single horse and provide a device where the sickle bar may be adjusted at various heights.
Date: July 5, 1921
Creator: John Bryon Nelson
Object Type: Patent
System: The Portal to Texas History