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
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
Automobile-Spring. (open access)

Automobile-Spring.

Patent for improvements in automobile-springs, specifically a means of suspending the front and rear springs of an automobile and cushioning and absorbing shocks.
Date: July 5, 1921
Creator: Jones, George Chester & Jones, George C.
Object Type: Patent
System: The Portal to Texas History
Bailer. (open access)

Bailer.

Patent for improved bailer for deep wells (e.g., oil wells), cheaper to use and manufacture, with a better delivery gate and improved method for triggering gate closure upon bailer withdrawal.
Date: July 26, 1921
Creator: Swartz, Ira
Object Type: Patent
System: The Portal to Texas History
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
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
Burner (open access)

Burner

Patent for an oil burner, in combination with a gas generating portion of a burner pipe below and provided by a upwardly directed discharge opening, a drip pan secured in place and extending horizontally below said burning pipe.
Date: July 26, 1921
Creator: Kunkel, Albert R.
Object Type: Patent
System: The Portal to Texas History
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
Collar Fastener and Supporter (open access)

Collar Fastener and Supporter

Patent for an object that provides the collar support and is hidden.
Date: July 19, 1921
Creator: Hudson, George J.
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
Drier. (open access)

Drier.

Patent for a drier, specifically to dry saturated grounded food items. This device is best used for flour from corn to dry before processing it to a powder form, but can also be used for other types of cereal.
Date: July 19, 1921
Creator: Garza, Pablo Gonzalez
Object Type: Patent
System: The Portal to Texas History
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
Electric-Current Relay (open access)

Electric-Current Relay

Patent for Electric-Current Relay to allow capability of use with either a direct or alternating current. This is adapted for economical use in constant temperature apparatus. Further, this technology avoids the possibility of "sticking of relay movable contacts".
Date: July 19, 1921
Creator: Lorenz, Charles O.
Object Type: Patent
System: The Portal to Texas History
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
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
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
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
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
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
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
Method of Repairing Scored Cylinders. (open access)

Method of Repairing Scored Cylinders.

Patent for repairing scored cylinders in internal combustion engines by making the cylinders as smooth and hard as before they were scored and by filling the scores with metal to maintain the firmness.
Date: July 12, 1921
Creator: Eury, Zebulon J.
Object Type: Patent
System: The Portal to Texas History
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
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