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Explosion-Hatch for Oil-Tanks.

Description: Patent for useful and new improvements in explosion hatches for oil tanks. This product specifically provides a hatch on the oil tank which will permit the escape of combustion gasses through the hatchway. It does so without damage to the hatch, case, or the tank. This provides additional safety and security for the operator.
Date: November 8, 1921
Creator: Hull, Burton E.
Partner: UNT Libraries Government Documents Department

Valve-Lifter

Description: Patent for an improved device that can be applied to a valve spring plate without losing grip.
Date: April 8, 1920
Creator: Chaney, Robert
Partner: UNT Libraries Government Documents Department

Package-Binder and Hooks Therefor and Record-Check

Description: Patent for a simple, effective, and relatively economical way to secure items when shipped or handled. The patent includes strap binders, hooks and straps therefor, and a record check.
Date: November 8, 1921
Creator: Glisson, Amos A.
Partner: UNT Libraries Government Documents Department

Shock-Absorber.

Description: Patent for an improved design of shock absorbers that gives vehicles a smoother ride.
Date: March 8, 1921
Creator: Swindowsky, Walter
Partner: UNT Libraries Government Documents Department

Electrical Tank-Gage.

Description: Patent for tank gages that use an electrical indicator to show fluid levels and waste that settles at the bottom of the tank.
Date: November 8, 1921
Creator: Bartlett, Ernest C. & Allison, Joseph, E.
Partner: UNT Libraries Government Documents Department

Cotton Picking Apparatus.

Description: Patent for cotton-picking apparatus. This apparatus supports complete removal of the cotton from plant without foreign objects or harm to plant.
Date: November 8, 1921
Creator: Alvin, Alleyne D.
Partner: UNT Libraries Government Documents Department

Burglar-Alarm

Description: Patent for improvements in burglar alarms, with horns and sirens.
Date: March 8, 1921
Creator: Sefcik, Francis
Partner: UNT Libraries Government Documents Department

Polished-Rod Clamp.

Description: Patent for improvements in Polished-Rod Clamps that "quickly and easily attached to a rod without the use of tools" (lines 56-57) and "be easily operated at a distance from a pump" (lines 59-60).
Date: November 8, 1921
Creator: Weister, Edward P.
Partner: UNT Libraries Government Documents Department

Combination Valve-Cap and Tire-Deflator.

Description: Patent for a device which serves both as a cap for a tire valve and a tool for letting air out of said tire valve.
Date: March 8, 1921
Creator: McComb, William P.
Partner: UNT Libraries Government Documents Department

Adjustable End Die.

Description: Patent for improvements to adjustable end dies. These improvements allow convenient rethreading of bolts while it is engaged with an object.
Date: February 8, 1921
Creator: Wright, John G.
Partner: UNT Libraries Government Documents Department
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