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Valve-Cleaner. (open access)

Valve-Cleaner.

Patent for a valve cleaner to remove carbon from the internal combustion motors in automobiles. It can be used without removing the valve or motor.
Date: December 13, 1921
Creator: Henderson, Daniel D.
System: The Portal to Texas History
Vehicle-Hoist. (open access)

Vehicle-Hoist.

Patent for vehicle hoist that "will be operated automatically by the momentum of the vehicle" (lines 17-19). The hoist is intended to be accessible to all users, professional and layperson, due to its simple design and lower price.
Date: December 6, 1921
Creator: Boutte, John G.
System: The Portal to Texas History
Process of Mining Sulfur. (open access)

Process of Mining Sulfur.

Patent for innovations in the underground fusion or Frasch process of mining sulfur, "which comprises conducting an appropriate fusing medium [such as hot water] into the formation containing the sulfur deposit and thereby melting the sulfur" (lines 91-95). Central to the innovations is the use of a compressed gas to "eliminate or largely reduce heat losses in porous rock and exhausted sulfur regions at the higher levels of the mine where the presence of the hot water is of no benefit so far as melting sulfur is concerned" (lines 55-60).
Date: December 27, 1921
Creator: Drachenberg, August Toby
System: The Portal to Texas History
Electric Sign. (open access)

Electric Sign.

Patent for an electric lighted sign, as might be displayed in the window of a business. The sign consists of a box with an inner reflective coating, an interior light source (bulb), and front-facing circular cutouts with translucent coverings, the latter arranged to depict the sign text.
Date: December 27, 1921
Creator: Daughdrill, Kenneth W.
System: The Portal to Texas History
Railroad Crossing Signal. (open access)

Railroad Crossing Signal.

Patent for a railroad crossing signal. The device is created so that the highway signal can be automatically raised or lowered at the crossing by a passing train.
Date: December 13, 1921
Creator: Ridout, Horace J.
System: The Portal to Texas History
Process of Making Bearings (open access)

Process of Making Bearings

Patent for the process of making bearings, for improvement of bearings and the process of bearing formation on the interior of rotary members (or rotary cutters used on earth boring drills).
Date: December 13, 1921
Creator: Fletcher, Harold W.
System: The Portal to Texas History
Rotary Engine (open access)

Rotary Engine

Patent for rotary engine, with improvements to rotary engine fluid pressure for motors or engines which pump fluids (such as water motor, water pump, oil pump, ammonia pump or compressor).
Date: December 27, 1921
Creator: Johnson, Louis V.
System: The Portal to Texas History
Pipe Tongs (open access)

Pipe Tongs

Patent for pipe tongs, adapted to securely grip and rotate pipe sections (or other round articles) of different sizes.
Date: December 27, 1921
Creator: Lowrey, George A.
System: The Portal to Texas History
Faucet. (open access)

Faucet.

Patent for improved faucet for dispensing soft drinks, designed to dispense a certain amount to ensure uniformity.
Date: December 27, 1921
Creator: Klein, George C.
System: The Portal to Texas History
Window-Shade-Operating Device (open access)

Window-Shade-Operating Device

Patent for a window-shade-operating device that "revolv[es] the shade roller and [retains] the roller in position whereby the shade is held at the desired point" (lines 14-17).
Date: December 16, 1919
Creator: Minnis, Henry M.
System: The Portal to Texas History
Window Shade Guide. (open access)

Window Shade Guide.

Patent for window shade roller guides. This invention ensured a smooth and successful unrolling of the window shade, allowing the shade to be guided by a two-part attachment on the sides of the window shade spool. The inventor claimed that the use of this apparatus could preserve the integrity of the roller by minimizing damage during operation.
Date: December 2, 1919
Creator: Orr, James E.
System: The Portal to Texas History
Valve Remover. (open access)

Valve Remover.

Patent for "an improvement in combination tools...adapted for use with internal combustion engines...mechanism is provided for assisting in valve removing." [lines 8-14]
Date: December 2, 1919
Creator: Ingram, George W.
System: The Portal to Texas History
Mail-Bag Catcher. (open access)

Mail-Bag Catcher.

Patent for an improvement to devices that receive mail bags from moving locomotion.
Date: December 17, 1918
Creator: Ryan, Augustus M.
System: The Portal to Texas History
Insulator. (open access)

Insulator.

Patent for an insulator for water pipes that conducts away electric current to be utilized elsewhere.
Date: December 25, 1917
Creator: Stone, Oscar Otto
System: The Portal to Texas History
Valve-Closure for Ventilators (open access)

Valve-Closure for Ventilators

Patent for a new valve-closure for ventilators on plumbing systems by W.L. Hamilton and G. McCullough.
Date: December 20, 1917
Creator: Hamilton, William L. & McCullough, George
System: The Portal to Texas History
Lawn-Sprinkler. (open access)

Lawn-Sprinkler.

Patent for an inexpensive lawn sprinkler that serves the dual purpose of connecting to a hose to spread the water over a broad area and of holding a hose stationary to water a single area.
Date: December 11, 1917
Creator: Schneider, Gustav H.
System: The Portal to Texas History
Indicator for Vehicles. (open access)

Indicator for Vehicles.

Patent for a device for vehicles which can signal turns and stops. Designed to be used in place of the driver's hand, this device consists of indicator arms mounted of either side of a vehicle and button controls placed near the driver's seat. Illustrations included.
Date: December 30, 1919
Creator: Hutchison, William F., Sr.
System: The Portal to Texas History
Valve. (open access)

Valve.

Patent for "new and useful Improvements in Valves" (lines 5-6) used in pneumatic inner tubes to stop leakage, including illustrations.
Date: December 14, 1920
Creator: Cheek, Alex L.
System: The Portal to Texas History
Vegetable-Cutter. (open access)

Vegetable-Cutter.

Patent for a vegetable cutter which is to be used as a grater.
Date: December 10, 1918
Creator: Wittenborn, Edmund A.
System: The Portal to Texas History
Interest-Computing Device. (open access)

Interest-Computing Device.

Patent for a mechanical interest computing device, which is designed to be simple to build, maintain, and operate.
Date: December 10, 1918
Creator: Harris, Ira S.
System: The Portal to Texas History
Valve. (open access)

Valve.

Patent for improvement in valves, by means of assuring a tight operating stem. The stem is comprised of two movable sections incorporated into a design purposed to prevent leakage by the stem. Additional mentions include acknowledged awareness of susceptibility to change and modification, convenience and facility, and simplicity as related to cost.
Date: December 24, 1918
Creator: Pratt, Robert L.
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
Tunneling-Machine. (open access)

Tunneling-Machine.

Patent for a tunneling machine that has the ability to easily change course and utilizes a conical shaped shell to receive loose earth and convey it towards the mouth of the tunnel. The invention also has a rotating head connected to the carrying vehicle meaning that the machine is supported and driven forward against the tunnel as it is cut away.
Date: December 30, 1919
Creator: Dana, Frank L.
System: The Portal to Texas History
Windmill. (open access)

Windmill.

Patent for a windmill for "connecting or mounting a pump rod and a pitman for transmitting movement from the crank shaft carrying the wheel" (lines 14-16) in a balanced way that will reduce wear and tear. Additionally, other elements attached to the supporting structure will "compensate for the the uneven action due to the variable pull on the pitman and pump rod." (lines 31-33).
Date: December 6, 1921
Creator: Winslett, William Henry
System: The Portal to Texas History