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Pump

Description: Patent for an improved version of a pump that includes two pistons in order to eliminate both intake and discharge valves.
Date: June 15, 1915
Creator: Sherman, J. M.
Partner: UNT Libraries Government Documents Department

Lever-Latch.

Description: Patent for a lever latch that features improved locking mechanisms for hand levers, including illustrations.
Date: June 15, 1915
Creator: Smith, Asa E.
Partner: UNT Libraries Government Documents Department

Measuring Device

Description: Patent for a measuring device specifically created for drawing circles with chalk, with the ability to increase and decrease the size of the circles being drawn without interference including illustrations and instructions.
Date: June 15, 1915
Creator: Giese, Willy
Partner: UNT Libraries Government Documents Department

Plate for Secondary Batteries.

Description: Patent filed by Joseph O. Luthy, a citizen of the Republic of Switzerland, residing in the city of San Antonio, concerning new and useful improvements in placates for secondary batteries. Figures page 1. Description of patent begins page 2.
Date: June 15, 1915
Creator: Luthy, Joseph O.
Partner: UNT Libraries Government Documents Department

Gripping Device for Well-Boring Apparatus

Description: Patent for a gripping device for well-boring apparatus that allows the rotary gripping rings to be reversed and used as new when one side has been worn down completely including illustrations and instructions.
Date: June 15, 1915
Creator: Myers, George S.
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 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

Spring-Wheel.

Description: Patent for an improved spring wheel "which may replace the inelastic wheels commonly used in connection with automobiles, and which are usually made of wood" (lines 10-13) including illustrations.
Date: June 15, 1915
Creator: Gebhardt, William
Partner: UNT Libraries Government Documents Department

Automatic Release hook

Description: Patent for Automatic Relese Hook
Date: June 15, 1916
Creator: Mazoch, A. F. & Sladecek, E.
Partner: UNT Libraries Government Documents Department

Coffin

Description: Patent for a lightweight and sturdy coffin made of two solid pieces of baked or burned clay which can be sealed with cement and secured further with nuts and bolts.
Date: June 15, 1915
Creator: Arnold, Price
Partner: UNT Libraries Government Documents Department
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