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Non-Refillable Bottle.

Description: Patent for a non-refillable bottle with a valve in the neck that opens to let the contents be poured out of the bottle but seals itself if liquid is poured back in the bottle.
Date: April 25, 1911
Creator: Sargent, William H.
Partner: UNT Libraries Government Documents Department

Pipe-Wrench.

Description: Patent for improvements to pipe wrenches to a more simple design.
Date: February 16, 1915
Creator: Lewis, Guy V.
Partner: UNT Libraries Government Documents Department

Meter.

Description: Patent for a meter measuring the flow of liquid with a dial indicating gallons per hour for use in vehicles with internal combustion engines.
Date: April 21, 1914
Creator: Carroll, William G.
Partner: UNT Libraries Government Documents Department

Plunger.

Description: Patent for a plunger for use in pumps and air compressors that fits tightly into the cylinders of the machine.
Date: February 27, 1912
Creator: Ohmstede, August
Partner: UNT Libraries Government Documents Department

Piano Key Bushing.

Description: Patent for an improved piano key bushing that designed to reduce sticking of the keys. Important parts of the bushing are made of metal and given ample room to expand without causing friction that might cause the keys to stick.
Date: August 25, 1914
Creator: Rogers, Karl C.
Partner: UNT Libraries Government Documents Department

Rope-Socket.

Description: Patent for a rope socket for use with well drilling tools that absorbs shocks and keeps the rope straight.
Date: August 2, 1910
Creator: Greeves, Walter Bruce & Black, Lee Jackson
Partner: UNT Libraries Government Documents Department

Dry Closet.

Description: 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.
Partner: UNT Libraries Government Documents Department

Drying-Machine

Description: Patent for a drying machine for stone, clay and related substances that will not burn the materials.
Date: March 4, 1913
Creator: Black, Lee J.
Partner: UNT Libraries Government Documents Department

Door-Hanger.

Description: Patent for a door hanger which supports heavy doors, in particular "barn doors, freight car doors, and the like."
Date: April 29, 1913
Creator: Caneavri, Joseph
Partner: UNT Libraries Government Documents Department

Roundabout

Description: Patent for a roundabout ride with an improved method of turning the seats and the seat holder.
Date: July 23, 1912
Creator: Mayhew, Nathaniel L.
Partner: UNT Libraries Government Documents Department

Rotary Drilling-Machine

Description: Patent for a rotary drilling machine for drilling oil wells. Illustrations included.
Date: February 18, 1913
Creator: Black, Lee J.
Partner: UNT Libraries Government Documents Department

Rotary Drilling Apparatus

Description: Patent for well drilling apparatus (commonly known as rotaries) with eliminated screws and nuts, and reduced minimum number of parts, and which provides a quickly and easily operable gripping device.
Date: June 22, 1915
Creator: Black, Lee J.
Partner: UNT Libraries Government Documents Department

Sectional Dam and Flume

Description: Patent for a sectional dam and flume for small waterways that takes the water to a turbine.
Date: February 4, 1913
Creator: Holmes, Clayton F.
Partner: UNT Libraries Government Documents Department

Safety Oil-Tank

Description: Patent for improvements to safety oil tanks to prevent explosions, including illustrations.
Date: May 6, 1913
Creator: Smith, James H.
Partner: UNT Libraries Government Documents Department

Safety-Lamp.

Description: Patent for a safety lamp that prevents the explosion of combustible gases by adding a perforated dome and air chamber. The expansion spaces cut off the air supply and extinguish the lamp.
Date: June 5, 1917
Creator: Kincade, Elmer C.
Partner: UNT Libraries Government Documents Department

Roof Structure.

Description: Patent for an improved roof structure that has "movable panels in the roof and side walls... to permit of manual adjustment to regulate the temperature, light, and moisture" (lines 10-14). This patent includes instructions and illustrations.
Date: October 29, 1918
Creator: Simon, Jacob P.
Partner: UNT Libraries Government Documents Department

Rice Harvester

Description: Patent for an improved rice grain harvester. This harvester gather only grain, not straw or stalks, in order to prevent the grain from gathering dampness or moisture over long periods of time.
Date: July 11, 1916
Creator: Motte, James N. & Katz, Adam
Partner: UNT Libraries Government Documents Department

Head-Lamp-Controlling Means.

Description: Patent for an invention relating to the control of "headlamps" or headlights of motor vehicle. Objectives, structure, and illustrations of the invention are included.
Date: August 7, 1917
Creator: Whitlow, Alamander
Partner: UNT Libraries Government Documents Department

Heater

Description: Patent for a new and useful heater design "particularly for heating the water in the circulating system of internal combustion engines, such as are used in automobiles" (lines 10-12). Illustrations are included.
Date: June 6, 1916
Creator: Smith, Frederick C.
Partner: UNT Libraries Government Documents Department

Demountable Rim

Description: Patent for a durable yet inexpensive "demountable rim for vehicle wheels" (lines 12-13), with a sectional design for ease of attachment and removal.
Date: September 16, 1913
Creator: McPherson, Arthur
Partner: UNT Libraries Government Documents Department

Detector for Wireless Telegraphy

Description: Patent for an improved detector for wireless telegraph machine through the use of minerals such as copper, sulfur, and zinc.
Date: November 9, 1915
Creator: Lorenz, Charles O.
Partner: UNT Libraries Government Documents Department

Friction-Clutch

Description: Patent for friction clutch (used in automobiles) that would allow better control over rotary parts, even when driving in reverse. The improved control is partially due to the inclusion of a tension device unique to this clutch.
Date: July 21, 1914
Creator: Barry, David Redmond
Partner: UNT Libraries Government Documents Department

Device for Dipping Lumber.

Description: Patent for a device for dipping lumber in a "soda" bath for preventing mildewing that allows the operator of the sawmill to determine which logs go through the bath.
Date: August 9, 1910
Creator: Baten, William Lucian
Partner: UNT Libraries Government Documents Department

Hoisting Hook.

Description: Patent for "certain new and useful Improvements in Hoisting-Hooks" (lines 5-6) including specifications and illustrations.
Date: June 22, 1915
Creator: Black, Lee J.
Partner: UNT Libraries Government Documents Department
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