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Jack-Block.

Description: Patent for improvement in jack boxes used for holding the wheel of a car.
Date: June 22, 1915
Creator: Guild, George
Partner: UNT Libraries Government Documents Department

Hydrocarbon-Burner

Description: Patent for a hydrocarbon burner that releases the fuel oil by means of a spray, for use in furnaces of stationary boilers. It also allows easy adjustment to the fuel nozzle on the spray.
Date: June 22, 1915
Creator: Smith, Algernon V.
Partner: UNT Libraries Government Documents Department

Rotary-Disk Boring-Drill.

Description: Patent for improvements to rotary disk boring drills, including a "novel means for securely locking in the head the spindles on which the cutters are rotatably mounted."
Date: June 15, 1915
Creator: Hughes, Howard R.
Partner: UNT Libraries Government Documents Department

Rotary Valve Mechanism.

Description: Patent for a rotary valve mechanism that regulates an internal combustion engine's intake of charge and release of exhaust.
Date: June 8, 1915
Creator: Harpst, Frederick E.
Partner: UNT Libraries Government Documents Department

Rotary Drill.

Description: Patent for a rotary drill that more effectively dislodges disintegrated material from the drill's cutting device during well-drilling.
Date: June 15, 1915
Creator: Hughes, Howard R.
Partner: UNT Libraries Government Documents Department

Demountable Cutting Edge for Drilling Tools.

Description: Patent for a rotary cutter with a detachable cutting edge and shearing portion that can be easily renewed or replaced.
Date: June 15, 1915
Creator: Hughes, Howard R.
Partner: UNT Libraries Government Documents Department

Cutter for Rotary Boring-Drills.

Description: Patent for an improvement to Hughes' previously patented rotary cutter design for oil drilling equipment (no. 930,759, 1909), to increase the cutting surface area and durability of the cutter.
Date: June 15, 1915
Creator: Hughes, Howard R.
Partner: UNT Libraries Government Documents Department

Air-Lift for Elevating Liquids.

Description: Patent for a pneumatic lift that maintains the air pressure needed to effectively move liquid through a pipe.
Date: June 29, 1915
Creator: Andrews, Benjamin
Partner: UNT Libraries Government Documents Department
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