UNT Libraries Government Documents Department - 14 Matching Results

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Door Stop and Lock.

Description: Patent for a door lock and door stop that is operated from the doorknob by having a rod with a bolted door stop box on the bottom inserted into the door frame.
Date: April 9, 1907
Creator: Tatum, Cicero James
Item Type: Refine your search to only Patent

Electrical Apparatus for Heating Stills, Boilers, and the Like.

Description: Patent for "Improvements in Electrical Apparatus for Heating Stills, Boilers, and the like" (lines 6-8) that uses electricity and includes "a heating element which is not affected by repeated changes in temperature, which is adapted to present a heating surface of large area, which may be raised to a high temperature with a low current, and which is many times more economical in use than metal coils possessing less heat radiating powers" (lines 21-28) including illustrations.
Date: April 9, 1918
Creator: Lorenz, Charles O.
Item Type: Refine your search to only Patent

Game.

Description: Patent for a "a game of skill, rather than a game of chance" (lines 11-12), albeit with elements of a game of chance, in the style of a carnival game. The game consists of a motorized, revolving model airplane and a circular arrangement of nets (one for each player); the airplane drops candy into the winning player's net.
Date: August 9, 1921
Creator: Auffurth, Erwin, Jr. & Hjerpe, Erick
Item Type: Refine your search to only Patent

Improvement In Percussion-Shells.

Description: This patent was created for individuals to be able to hit an object with the instrument and the oject immediately explodes on impact. It then produces an excessive amount of explosions. The invention is made out of shells with sections assembled together infused with different substances, and connected by a fuse.
Date: April 9, 1878
Creator: Urquhart, John M.
Item Type: Refine your search to only Patent

Mechanical Movement

Description: Patent for "an object to provide a chain and sprocket movement with improved means for maintaining the chain in operatively taut condition and relation to the sprocket wheel" (lines 13-17), including illustrations.
Date: November 9, 1915
Creator: Stine, John
Item Type: Refine your search to only Patent

Oil-Tank.

Description: Patent for an oil tank with an improved design for extinguishing fires inside the tanks and a means for allowing the escape of exploded gases upon accidental ignition.
Date: February 9, 1915
Creator: Wasson, Edgar Allen & Cooley, Francis Marion
Item Type: Refine your search to only Patent

Smoke-Separator.

Description: Patent for "a new and improved smoke separator designed for use in connection with smelter furnaces and other apparatus, and arranged to effectively prevent poisonous or obnoxious gases from passing into the atmosphere, at the same time retaining and saving valuable matter contained in the smoke" (lines 9-16); including instructions and illustrations.
Date: December 9, 1913
Creator: Holmes, Clayton Floyd
Item Type: Refine your search to only Patent

Street-Pavement

Description: Patent for a street paving material made from limestone, limestone dust, and crude oil with layers of crushed rock in between which is waterproof and durable.
Date: June 9, 1908
Creator: Walsh, John M.
Item Type: Refine your search to only Patent
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