Collapsible Rim. (open access)

Collapsible Rim.

Patent for new and useful improvements related to demountable rims that are collapsible. This improvement facilitates the removal of a tire in an easier and expeditious manner.
Date: May 20, 1919
Creator: King, Willis C.
System: The Portal to Texas History
Change-Speed Mechanism for Tractor-Truck Motor-Vehicles (open access)

Change-Speed Mechanism for Tractor-Truck Motor-Vehicles

Patent for a machine that can be used either as a truck for traveling over highways or as a tractor for farm work.
Date: October 28, 1919
Creator: Miller, William J.
System: The Portal to Texas History
Process of Purifying Oil (open access)

Process of Purifying Oil

Patent for using aluminum chlorid compounds to clean crude oil. Which is apart of the petrochemical process of oil purification.
Date: August 5, 1919
Creator: Miller, Albert E.
System: The Portal to Texas History
Dry Closet. (open access)

Dry Closet.

Patent for improvements in dry closets with an illustration. The improvements patented are specific to separating "fecal matter and urine" (line 15).
Date: July 15, 1919
Creator: Moore, Joseph B.
System: The Portal to Texas History
Combined Kitchen-Cabinet and Refrigerator (open access)

Combined Kitchen-Cabinet and Refrigerator

Patent for the combination design of kitchen cabinets that include a refrigerator component.
Date: March 4, 1919
Creator: Polk, Thomas J.
System: The Portal to Texas History
Attachment for Motor-Vehicles (open access)

Attachment for Motor-Vehicles

Patent for an attachment for motor vehicles, specifically for Ford cars but compatible with any car, where the attachment prevents the reverse movement of the car's crank.
Date: August 12, 1919
Creator: Daniel, Ulysses S.
System: The Portal to Texas History
Utilization of Acid-Coke (open access)

Utilization of Acid-Coke

Patent for the utilization sulfuric acid in the creation and uses of acid-coke.
Date: January 7, 1919
Creator: George L. Pichard
System: The Portal to Texas History
Heel-Sweep. (open access)

Heel-Sweep.

Patent for a "heel sweep for a plow. The invention aims to provide a sweep which will possess great strength..."
Date: December 16, 1919
Creator: Kelly, George Dudley
System: The Portal to Texas History
Method of Casting Chilled Valve-Seats (open access)

Method of Casting Chilled Valve-Seats

Patent for making moldings of seats to be more consistent.
Date: March 11, 1919
Creator: Boykin, Burwell, Jr.
System: The Portal to Texas History
Lawn Mower (open access)

Lawn Mower

Patent for a lawn mower in which the means for adjusting the intermediate blade has been created so that a groove for a predetermined depth can be cut, and easy removal of the blade when it is desired to sharpen the same. Additionally, a ground-engaging roller is included to keep the machine at the same level so that the knife will cut into the ground at an even depth.
Date: December 5, 1919
Creator: Coniglio Carmelo
System: The Portal to Texas History
Improving Oils. (open access)

Improving Oils.

Patent for a method of improving the quality of more volatile petroleum oils, such as gasoline and burning oils.
Date: December 23, 1919
Creator: McAfee, Almer M.
System: The Portal to Texas History
Manufacture of Aluminum Chlorid (open access)

Manufacture of Aluminum Chlorid

Patent for the manufacture of aluminum chlorid and the method of making aluminum chlorid to produce vapors that are subsequently condensed in any suitable manner. This patent is important because it is advantageous to work with a producer of gas made at as high a temperature. This is because of the greater amount of sensible heat it carries forward for use in the reaction.
Date: July 1, 1919
Creator: King, George H.
System: The Portal to Texas History
Pump. (open access)

Pump.

Patent for an improved pump valve designed for a pump for pumping oil from oil wells "which will not be affected by the fluid or gas pressure in the bore" (lines 17-18).
Date: September 30, 1919
Creator: Graf, Sydney H.
System: The Portal to Texas History
Process of and Apparatus for Making Halids (open access)

Process of and Apparatus for Making Halids

Patent for a new and improved process of and apparatus for making halides which transmit the necessary heat to the reaction mass by preheating the chlorine and not through the wall as in usual types of retorts.
Date: July 8, 1919
Creator: Abbott Lyle Stockton
System: The Portal to Texas History
Still. (open access)

Still.

Patent for a still designed to refine crude petroleum and extract lighter elements, including illustrations.
Date: February 11, 1919
Creator: Gallsworthy, Benjamin
System: The Portal to Texas History
Tire Structure (open access)

Tire Structure

Patent for a tire structure that eliminates circumferential differences and also renders a simpler, less expensive model for tire construction.
Date: October 7, 1919
Creator: Smith, Jesse G.
System: The Portal to Texas History