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Adjustable Book-Cover (open access)

Adjustable Book-Cover

Patent for a book cover that can be adjusted to fit any book size.
Date: September 28, 1920
Creator: Toland, Thomas L.
System: The Portal to Texas History
Adjustable Footrest. (open access)

Adjustable Footrest.

Patent for an improved, adjustable foot rest that allows for more adjustments and range of motion "to any desired position for the comfort of the user" (lines 13-14), and is secured to the floor.
Date: April 20, 1920
Creator: Kingsford, Walter E.
System: The Portal to Texas History
Adjustable Split Lock-Nut or Union. (open access)

Adjustable Split Lock-Nut or Union.

Patent for an affordable and efficient coupling device for use "on valve rods of internal combustion engines, especially those used in automobiles and aeroplanes or on those motors or engines employing overhead valves and whereby the union or coupling may be readily and securely locked on a valve rod with sufficient resistance to withstand the strain of direct pressure" (lines 14-21).
Date: August 17, 1920
Creator: Dickinson, Harry E.
System: The Portal to Texas History
Adjustable Tire Mold (open access)

Adjustable Tire Mold

Patent for a tire mold that improves the viability of a tire mold due to the adjustable levers used during the tire curing process.
Date: December 7, 1920
Creator: Hibbs, Cassell D.
System: The Portal to Texas History
Advertising Attachment for Scales. (open access)

Advertising Attachment for Scales.

Patent for improvements in advertising attachments for scales to "provide an attachment of the character specified, wherein a series of display members are provided, mounted to be moved into different positions, to bring different matter into different positions, and controlled to movement by the stepping onto the weighing platform of the one to be weighed." (lines 11-18)
Date: July 13, 1920
Creator: Funk, Arthur Neal
System: The Portal to Texas History
Aeroplane. (open access)

Aeroplane.

Patent for a new and useful airplane that provides the ability of the aircraft to take off from the ground at an abrupt angle. The aircraft has a supplemental propeller and jointed body to direct the machine upward in an abrupt ascent, making it especially useful in wooded areas or where obstructions prevent normal take-off.
Date: February 3, 1920
Creator: Cartwright, Andrew
System: The Portal to Texas History
Aeroplane-Kite. (open access)

Aeroplane-Kite.

Patent for a new aeroplane-kite which can be "readily dismantled and folded for shipping and easily assembled and placed in position for flying without the use of numerous fastenings and detachable parts, thereby making for simplicity and practicability" (lines 12-17). Also includes wind tunnels and a fuselage frame which is so easily assembled that a child can do it.
Date: October 19, 1920
Creator: McLaughlin, James T.
System: The Portal to Texas History
Air-Cushion Tire. (open access)

Air-Cushion Tire.

Patent for improvement to the air-cushion tire in terms of resilience, and an improved structure.
Date: March 16, 1920
Creator: Williams, Harry S.
System: The Portal to Texas History
Air-Pump. (open access)

Air-Pump.

Patent for a new and improved air pump capable of releasing air from the cylindrical casing in one motion. The updated design will also eliminate any lubricating oil from leaking into a tire.
Date: October 19, 1920
Creator: Lawley, Ira
System: The Portal to Texas History
Animal-Trap. (open access)

Animal-Trap.

Patent for an animal trap that allows an animal, most suitably animals of the rodent species, to enter a rectangular box from any of its four sides through a gate formed of downwardly inclined wires pivoted above each of said openings inside of the box. When an animal enters the trap, they are unable to leave because of the downwardly bent ends of transverse bars secured to the said inclined wires.
Date: November 2, 1920
Creator: Smith, James W.
System: The Portal to Texas History
Anti-Agitating Device. (open access)

Anti-Agitating Device.

Patent for anti-agitating device, including two figures describing said device, with illustrations. Author describes improvements for liquid dispensers on previous anti-agitating devices by altering the cylinder duties during its performance.
Date: February 3, 1920
Creator: Catron, John J.
System: The Portal to Texas History
Antifreezing Appliance for Water-Pipes. (open access)

Antifreezing Appliance for Water-Pipes.

Patent for anti-freezing appliance for water supply and drain pipes of residences and buildings. The object is provide a device connected with the main and service lines of a hours supply water system for the purpose of avoiding interfering with the operation of the service.
Date: January 20, 1920
Creator: Davis, Thomas A.
System: The Portal to Texas History
Antiskid Device (open access)

Antiskid Device

Patent for reinforcing the hinge of an antiskid device. Long studs on heavy foot plates on tires are used to brace the hinges not allowing them to wear down by dragging on the road surface.
Date: February 17, 1920
Creator: Smith, Ross
System: The Portal to Texas History
Apparatus for Extracting Minerals from Ores. (open access)

Apparatus for Extracting Minerals from Ores.

Patent for an apparatus that extracts minerals, especially sulfur, from ores. The apparatus features new and useful improvements, creating an automatic extraction that separates the minerals in a pure state.
Date: January 13, 1920
Creator: Shires, George M.
System: The Portal to Texas History
Apparatus for Heating and Ripening Honey. (open access)

Apparatus for Heating and Ripening Honey.

Patent for a device that quickly heats and ripens honey, employing a hot water tank containing a pipe coil through which the honey is poured and strained upon exit.
Date: January 6, 1920
Creator: Mitchell, Henry A.
System: The Portal to Texas History
Apparatus For Protecting And Preserving Poles And The Like (open access)

Apparatus For Protecting And Preserving Poles And The Like

Patent for add-on device to shield existing electric posts and poles from decay over time and weather damage.
Date: September 21, 1920
Creator: Lewis, Thomas E.
System: The Portal to Texas History
Apparatus for Raising Liquids from Deep Wells. (open access)

Apparatus for Raising Liquids from Deep Wells.

Patent for improvements for raising liquids from deep wells. "It has a particular application to the raising of fused sulfur from the well in the liquid state" (lines 14-16).
Date: May 11, 1920
Creator: Hebert, Joseph A.
System: The Portal to Texas History
Apparatus for Separating or Concentrating Ores (open access)

Apparatus for Separating or Concentrating Ores

Patent for improvements in apparatus for separating or concentrating ores through a flotation method.
Date: August 31, 1920
Creator: Cole, David
System: The Portal to Texas History
Apparatus for Treatment of Oil Emulsions. (open access)

Apparatus for Treatment of Oil Emulsions.

Patent for improvements in apparatus for treatment of oil emulsions by providing a means that will greatly assist in the separation of water from oil emulsions and which will aid the re-absorption or retention of gas.
Date: January 13, 1920
Creator: McKibben, Charles W.
System: The Portal to Texas History
Attachment for Broadcast Headers. (open access)

Attachment for Broadcast Headers.

Patent for harvesting machines that provisions for adjustable attachments and elevator mechanisms used to head maize or similar grain crops.
Date: July 28, 1920
Creator: Price, Filmore M.
System: The Portal to Texas History
Attachment for Lister-Cultivators (open access)

Attachment for Lister-Cultivators

Patent for improvements in attachments to lister-cultivators. Illustration is included.
Date: October 12, 1920
Creator: Degge, Marvin E.
System: The Portal to Texas History
Attachment for Rotaries. (open access)

Attachment for Rotaries.

Patent for rotary well-drilling machinery where the "ring or bushing to rotate independently of the table and the present invention is directed to means for accomplishing the rotating effect." (line 24-27)
Date: July 20, 1920
Creator: Johnston, Horace G.
System: The Portal to Texas History
Auto Steering-Lock (open access)

Auto Steering-Lock

Patent for a lock designed to attach to the spokes of a steering wheel with the intention of guarding it from "unauthorized persons" (line 20), including illustrations.
Date: June 1, 1920
Creator: Cosby, Luther F.
System: The Portal to Texas History
Automatic Density-Indicator for Slime-Pulp Separators. (open access)

Automatic Density-Indicator for Slime-Pulp Separators.

Patent for devices that thickens slimes for ore milling operations in which it will indicate the density and regulate it so it will not go below a predetermined value.
Date: June 22, 1920
Creator: Allen, Charles
System: The Portal to Texas History