UNT Libraries Government Documents Department - 14 Matching Results

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Arc-Lamp Attachment

Description: Patent for improving arc lamp attachments. The attachment allows an arc lamp to be able to use an incandescent lamp in place of the electrodes in an arc lamp. The attachment increases the efficiency and durability of the arc lamp.
Date: April 2, 1918
Creator: Pratt, James R.
Item Type: Refine your search to only Patent

Animal-Trap.

Description: Patent for an animal trap that allows an animal, most suitably animals of the rodent species, to enter a rectangular box from any of its four sides through a gate formed of downwardly inclined wires pivoted above each of said openings inside of the box. When an animal enters the trap, they are unable to leave because of the downwardly bent ends of transverse bars secured to the said inclined wires.
Date: November 2, 1920
Creator: Smith, James W.
Item Type: Refine your search to only Patent

High-Pressure Suction Fan and Blower.

Description: Patent for "a fan which will operate in a continuous and highly efficient manner and increase the air pressure with a reduced power of operation" and "may be used either in conjunction with a cotton gin...or it may be used for any other purpose where suction or blast fans are used" (lines 31-33, 10-15). It includes an illustration.
Date: August 2, 1921
Creator: Blackmon, Enoch J.
Item Type: Refine your search to only Patent

Tractor-Wheel.

Description: Patent for a new and improved design that provides adaptability for tractor wheels, including illustrations. It allows tractor wheels that are designed to be used on sandy or soft land to also be used on hard soil.
Date: November 2, 1920
Creator: Furche, Charles H.
Item Type: Refine your search to only Patent

Oil-Burner.

Description: Patent for an improved oil burner design "for use where high efficiency and greatest economy are desired in burning low grade oil" (lines 14-16), such as coal and crude oil. Includes illustrations.
Date: November 2, 1915
Creator: Wright, John F.
Item Type: Refine your search to only Patent

Ant-Trap

Description: Patent for "a simple device of this kind which will excel the former traps in depositing the ants within the annular pan and in efficiency for convenient discharge of the trapped insects" (lines 18-22).
Date: April 2, 1901
Creator: Inman, Joseph
Item Type: Refine your search to only Patent

Floor-Jack.

Description: Patent for simple, affordable, and durable carpenters tongs that are made to push the boards of a floor or wall into place before nailing is done.
Date: April 2, 1907
Creator: Fleming, Henry C. & Royster, William F.
Item Type: Refine your search to only Patent

Gate Latch.

Description: Patent for a new and improved gate-latch. This design is "so constructed as to permit of its ready adjustment to different gates, and also its adjustment, as may be required, subsequent to its attachment to the gate, without necessitating its removal" (lines 20-24). It "compris[es] the latch-bar having therein a longitudinal slot, the arm connected to the intermediate portion of said bar by a bolt or pin passing adjustably through said slot, said arm being curved forwardly at its upper portion,… more
Date: August 2, 1892
Creator: Fox, James T.
Item Type: Refine your search to only Patent

Post Office Case.

Description: Patent for a new and improved carrying case for mail. This design calls for a metal cylinder with twenty-six compartments (one for each English letter) around a central compartment. The compartments may be rotated to gain access to any of them via hinged doors at the top of the case.
Date: November 2, 1880
Creator: Crowder, John R. & Haile, James Thomas
Item Type: Refine your search to only Patent
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