UNT Libraries Government Documents Department - 10 Matching Results

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Aeroplane-Tail.

Description: Patent for improvements to the tail of aeroplanes. This invention is to be used to help control the flight of planes or heavy projectiles, and would not have effects on the equilibrium or be difficult to use.
Date: January 18, 1921
Creator: Joseph, M. Krowka
Item Type: Refine your search to only Patent

Combined Feeder and Hive Ventilator

Description: Patent for improvements in bee-hives by providing means in which the hive can be ventilated during warm weather. The invention provides means in which the ventilating means can be removed or rendered inoperative whenever desired or during cold weather.
Date: November 7, 1922
Creator: Heim, Charles; Heim, Emil R.; Heim, Clarence C. & Heim, Edwin C.
Item Type: Refine your search to only Patent

Cotton-Scraper.

Description: Patent for an improved cotton-scraper by applying a regulator (a rod) with a series of perforations to the rear of the scraper, for the purpose of adjusting the depth, at which the cutter shall run. Illustration included.
Date: February 3, 1891
Creator: Hobbs, James Joseph
Item Type: Refine your search to only Patent

Fly-Trap.

Description: Patent for a trap meant to aid in catching flies before they can make it into the home. Meant to be used in conjunction with doors that have screens in them and allowing for suitable ways for eliminating the pests from the trap.
Date: August 25, 1914
Creator: Cruttenden, James A.
Item Type: Refine your search to only Patent

Fruit-Drier.

Description: Patent for a fruit drier that includes "a series of hinged trays adapted to be folded into small compact form." (lines 11-13) including instructions and illustrations.
Date: March 24, 1914
Creator: Reid, William
Item Type: Refine your search to only Patent
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