UNT Libraries Government Documents Department - 646 Matching Results

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Oil-Converting Apparatus.

Description: Patent for an apparatus that can be built at moderate cost, which will enable a high rate of commercially efficient work to reduce "the specific gravity of various grades of hyrdo-carbon oils, especially those of a semi-refined character" (lines 22 - 24).
Date: October 28, 1919
Creator: Adams, Joseph H.
Item Type: Refine your search to only Patent

Display Rack

Description: Patent for store window display racks which can be easily removed and altered in appearance, allowing for more unique showings of commercial goods.
Date: July 14, 1914
Creator: Adamson, John Seldon
Item Type: Refine your search to only Patent

Fire Alarm System

Description: Patent for a new and improved fire alarm system. This alarm system will allow the room on fire to be identified and alert the fire department that there is a fire in that house. Using a minimum number of wires, for safety, this alarm signals only one bell no mater the room on fire.There is also a self test feature within this system.
Date: January 21, 1915
Creator: Ammons, John B.
Item Type: Refine your search to only Patent

Fire-Alarm System.

Description: Patent for "an alarm system consisting of an electric circuit within which as thermally operated circuit closer was placed, which was adapted to sound an alarm when the circuit closer had been closed by an operation of the thermal elements of the circuit closer." (lines 78-84) including instructions and illustrations.
Date: March 16, 1915
Creator: Ammons, John B.
Item Type: Refine your search to only Patent

Automatic Fire-Alarm System.

Description: Patent for an automatic fire alarm system with a simple arrangement of alarm devices (positioned throughout different rooms) with sound or visual indicators for fire awareness and closer thermal circuits (assisted with spring contact and circuit closer). The automatic fire alarm system will have a more immediate reaction by making an alert noise or visual and propping open the spring contact.
Date: March 16, 1915
Creator: Ammons, John Burck; Ammons, Evander & McGaffey, Otis
Item Type: Refine your search to only Patent

Arc-Lamp

Description: Patent for an arc lamp which does not spark for use in headlights for trains and automobiles and in street lights.
Date: June 28, 1910
Creator: Anderson, Thomas J.
Item Type: Refine your search to only Patent

Deep-Well Pump.

Description: Patent for "new and useful Improvements in Deep-Well Pumps," (lines 5-6), including illustrations. An improvement on the inventor's previous patent (1013579), with the intention of preventing and removing sand accumulation while pumping oil.
Date: August 19, 1919
Creator: Andrews, Benjamin
Item Type: Refine your search to only Patent

Mineral-Prospecting Apparatus.

Description: Patent for an "apparatus for drilling and obtaining samples or specimens of minerals" (lines 12-13), and obtaining accurate samples of ores in situations where they would otherwise be washed away by water or broken apart. The patent includes illustrations.
Date: August 26, 1913
Creator: Andrews, Benjamin
Item Type: Refine your search to only Patent

Apparatus for Treating Hydrocarbons.

Description: Patent for an improved apparatus for treating hydrocarbons. This apparatus is for treating comparatively heavy petroleum and other hydrocarbon oils and their distillates and derivatives, in order to produce from such heavy oils a large yield of gasoline or other light, easily volatile liquids. This apparatus will be a safe and efficient way to produce large yield of gasoline and light hydrocarbon liquids from heavy oils and will be free from trouble arising from the accumulation of carbon.
Date: August 5, 1919
Creator: Andrews, Benjamin & Averill, Willard C., Jr.
Item Type: Refine your search to only Patent

Means for Drying Briquets

Description: Patent for drying briquets. Briquets are placed on a track, which is then rotated by chains as it dries, before falling into a stack in a chamber. This allows for faster, more even drying of the briquets before use.
Date: July 20, 1917
Creator: Baker, Burke
Item Type: Refine your search to only Patent

Doll.

Description: Patent for a doll that will be durable and attractive by constructing a rigid form of the human bust and shoulders which serves to make these parts more durable, including illustrations and instructions.
Date: May 7, 1912
Creator: Baker, Marie K.
Item Type: Refine your search to only Patent
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