Boring-Tool. (open access)

Boring-Tool.

Patent for "a boring tool for boring scarred and worn engine cylinders" (lines 14-15) that allows for more customization when cutting.
Date: January 4, 1921
Creator: Adams, George Reese.
Object Type: Patent
System: The Portal to Texas History
Vehicle-Wheel (open access)

Vehicle-Wheel

Patent for a vehicle wheel with a tire that is improved with a spring cushion.
Date: January 4, 1921
Creator: Allan, William N.
Object Type: Patent
System: The Portal to Texas History
Blow-Out Boot (open access)

Blow-Out Boot

Patent for a blow-out boot which would prevent the usual particulate from being able to enter the inner tire after a blow-out.
Date: January 4, 1921
Creator: Barnes, John A.
Object Type: Patent
System: The Portal to Texas History
Mechanical Packer. (open access)

Mechanical Packer.

Patent for improvements towards the mechanical packing apparatus. The invention will connect the apparatus to power-operated presses, like that of the cotton press.
Date: January 25, 1921
Creator: Cameron, Theodore R.
Object Type: Patent
System: The Portal to Texas History
Marine Vessels (open access)

Marine Vessels

Patent for new and useful Improvements in Marine Vessels. Relates to marine vessels used for towing timber.
Date: January 4, 1921
Creator: Collier, Hugh R.
Object Type: Patent
System: The Portal to Texas History
New Lateral Stabilizing Device for Airplanes (open access)

New Lateral Stabilizing Device for Airplanes

"The proposed device tends to render the lateral stabilization of airplanes easier and more efficacious. The proposed solution is to mount the ailerons independently, in such a manner that they can turn freely, under the action of the relative wind, about an axis located in front of the extreme position of the center of the lift" (p. 1).
Date: January 1921
Creator: Constantin, Louis
Object Type: Report
System: The UNT Digital Library
The determination of the effective resistance of a spindle supporting a model aerofoil (open access)

The determination of the effective resistance of a spindle supporting a model aerofoil

An attempt was made to determine the effect of spindle interference on the lift of the airfoil by measuring moments about the axis parallel to the direction of air flow. The values obtained are of the same degree as the experimental error, and for the present this effect will be neglected. The results obtained using a U.S.A. 15 wing (plotted here) show that the correction is nearly constant from 0 degrees to 10 degrees incidence and that at greater angles its value becomes erratic. At such angles, however, the wing drag is so high that the spindle correction and its attendant errors become relatively small and unimportant.
Date: January 1921
Creator: Davidson, W. E. & Bacon, D. L.
Object Type: Report
System: The UNT Digital Library
The determination of downwash (open access)

The determination of downwash

It is obvious that, in accordance with Newton's second law, the lift on an aerofoil must be equal to the vertical momentum communicated per second to the air mass affected. Consequently a lifting aerofoil in flight is trailed by a wash which has a definite inclination corresponding to the factors producing the lift. It is thought that sufficient data, theoretical and experimental, are now available for a complete determination of this wash with respect to the variation of its angle of inclination to the originating aerofoil and with respect to the law which governs its decay in space.
Date: January 1921
Creator: Diehl, Walter S.
Object Type: Report
System: The UNT Digital Library
Sample Taking Device (open access)

Sample Taking Device

Patent for a sample taking device used in the process of drilling wells using water and a multi-armed unit that rotates to drill the stem into the ground.
Date: January 4, 1921
Creator: Dodds, Redus D.
Object Type: Patent
System: The Portal to Texas History
Abrading Element For Tire-Patch Containers (open access)

Abrading Element For Tire-Patch Containers

Patent for an improved tool that is affixed to tire-patch containers. It is used for abrading the surface of a tire to effectively roughen it (without the use of sandpaper) to allow the adhesion of a patch. Includes illustrations.
Date: January 4, 1921
Creator: Duffy, Jesse A.
Object Type: Patent
System: The Portal to Texas History
Crude-Oil-Refining Process. (open access)

Crude-Oil-Refining Process.

Patent for improvements in the crude oil refining processes and apparatuses. The invention focuses on creating an inexpensive and simplistic system that relies on temperature.
Date: January 25, 1921
Creator: Evans, Jewett G. P.
Object Type: Patent
System: The Portal to Texas History
Mechanical Riding-Horse. (open access)

Mechanical Riding-Horse.

Patent for mechanical riding horse that is designed for children to use. It's purpose is a toy that can be ridden and travelled on as a tricycle.
Date: January 25, 1921
Creator: Finley, David Guy
Object Type: Patent
System: The Portal to Texas History
Railway Cattle-Guard (open access)

Railway Cattle-Guard

Patent for a railway cattle guard whereby the weight of the animal causes a barrier to emerge, but the barrier will be removed automatically when the weight is removed.
Date: January 4, 1921
Creator: Fountain, Henry L.
Object Type: Patent
System: The Portal to Texas History
Vehicle Body Suspension (open access)

Vehicle Body Suspension

Patent for the invention of a new and improved vehicle body suspension.
Date: January 25, 1921
Creator: Harper, William D.
Object Type: Patent
System: The Portal to Texas History
Vehicle Spring-Wheel (open access)

Vehicle Spring-Wheel

Patent for improvement in vehicle spring-wheels.
Date: January 25, 1921
Creator: Harris, Walter A.
Object Type: Patent
System: The Portal to Texas History
Measurements of Rudder Moments on an Airplane During Flight (open access)

Measurements of Rudder Moments on an Airplane During Flight

Tests indicated that: 1) C airplanes with two struts are extremely susceptible to aileron maneuvers, slight alterations of the aileron sufficing to compensate great unequalized moments; 2) great unequalized moments can be produced or neutralized by the unequalized alternation of the angle of attack below the outer and inner struts. Adjustment below the outer strut is the more effective of the two. 3) When a load of bombs is suspended beyond the center of the airplane, below the wings, the bombs need not be dropped simultaneously. 4) The propeller wash of a wide open engine has considerable influence on the position and operation of the elevator. The elevator is more susceptible in flight with the engine running than in gliding flight. 5) Adjustable tail planes are not advisable for D airplanes, nor for the C type, but they are, on the other hand, to be recommended for large size and giant airplanes in which the center of gravity changes during flight. 6) The aileron values obtained by wind tunnel measurements are about 10 percent too low, though otherwise applicable. For the elevator, the results of such measurements should be taken as mean values between flight with the engine running and …
Date: January 1921
Creator: Heidelberg, V.
Object Type: Report
System: The UNT Digital Library
The 300 H.P. Benz Aircraft Engine (open access)

The 300 H.P. Benz Aircraft Engine

This report provides a description of the Benz 300 H.P. aircraft engine containing 12 cylinders placed at a 60° angle. It includes a detailed description of the development of the constructional points, particularly the cylinders, pistons, and connecting rods, as well as the engine fitting, lubrication, oil pumps, bearings, oil tank, fuel pump, carburetors, and cooling system. There are seven pages of illustrative figures at the end of the report.
Date: January 1921
Creator: Heller, A.
Object Type: Report
System: The UNT Digital Library
Funnel (open access)

Funnel

Patent for new and useful improvements in Funnels. Patent is for the provision of a funnel having a valve controlled outlet.
Date: January 4, 1921
Creator: Hodges, Eddie C.
Object Type: Patent
System: The Portal to Texas History
Leaf-Turner. (open access)

Leaf-Turner.

Patent for a new and improved leaf turner which allows the piano player to turn the pages of their sheet music without taking their hands off the keyboard. This leaf turner is "noiseless and efficient in operation and...will respond instantly to the actuating impulse" (lines 21-23). It is not expensive to make, and securely holds music and releases it without effort.
Date: January 11, 1921
Creator: Holcom, Jarret C.
Object Type: Patent
System: The Portal to Texas History
Steering Gear Stabilizer (open access)

Steering Gear Stabilizer

Patent for a steering gear stabilizer for car steering wheels. Intent of gear is to keep steering wheel from getting out of the driver's hands when going over rough terrain.
Date: January 25, 1921
Creator: Hornburg, Charles A
Object Type: Patent
System: The Portal to Texas History
Aeroplane-Tail. (open access)

Aeroplane-Tail.

Patent for improvements to the tail of aeroplanes. This invention is to be used to help control the flight of planes or heavy projectiles, and would not have effects on the equilibrium or be difficult to use.
Date: January 18, 1921
Creator: Joseph, M. Krowka
Object Type: Patent
System: The Portal to Texas History
Monkey-Wrench. (open access)

Monkey-Wrench.

Patent for a monkey wrench that "can be adjusted for different sizes of nuts by the same hand which is using the wrench...and which may also be used as a pipe wrench" (lines 16-21).
Date: January 11, 1921
Creator: Kirkpatrick, Otey R.
Object Type: Patent
System: The Portal to Texas History
Four-Wheel Drive (open access)

Four-Wheel Drive

Patent for a four-wheel drive with a combined central driving unit and differential that simplifies construction and improves efficiency in operation.
Date: January 25, 1921
Creator: Littlejohn, Lonzo B.
Object Type: Patent
System: The Portal to Texas History
Electric Edge Heel And Shank Setter. (open access)

Electric Edge Heel And Shank Setter.

Patent for device setting heels and shanks for shoe manufacturing. It is an edged electric device with a rotary wheel.
Date: January 11, 1921
Creator: Lutes, William
Object Type: Patent
System: The Portal to Texas History