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Cattle-Guard

Description: Patent for a cattle guard to prevent cattle from treading upon railroad tracks. Illustrations included.
Date: October 25, 1910
Creator: Reed, Conwell P.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Aeroplane.

Description: Patent for an improved rotary airplane engine patterned after the Gnome type with extra blades attached to the engine cylinders.
Date: March 25, 1913
Creator: Decker, Harry R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Bathing-Machine.

Description: Patent for a standing bathing machine that will wash and scrub the person standing inside it. Illustrations are provided but these are guidelines that should not be restricting but something for the builder to build upon.
Date: July 25, 1916
Creator: Howlett, Peyton Leon
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Bale-Tie Buckle

Description: Patent for bale-tie buckle to be used to secures bales of cotton specifically. This is used to increase the speed at which cotton can be secured while being ginned and compressed. This buckle can be reused multiple times.
Date: July 25, 1916
Creator: Horsley, Robert L.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Antifriction Device For Sucker Rods Or The Like

Description: Patent for an antifriction-roller (part of a pumping mechanism) with a mounting that can be manufactured at a low cost, "quickly and readily applied to a rod at any point....and prevent it from bending...and, furthermore, interpose a minimum obstruction to the flow of the liquid in the casing" (lines 17-25)
Date: March 25, 1902
Creator: Black, William L.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Alarm System

Description: Patent for a fire alarm system which activates when a certain temperature is detected by the device.
Date: May 25, 1909
Creator: Giese, Leo
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Adding-Machine

Description: Patent for "an adding-machine which, while being constructed of but comparatively few parts, will be so adjusted as arranged as to allow an operator to make rapid and correct calculations; furthermore, to produce an adding-machine in which the operator will be enabled to detect immediately any mistake which he may have made, and, finally, to produce a simple, efficient, and effective adding-machine" (lines 13-22).
Date: June 25, 1889
Creator: Stinson, James C.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Combination Harrow and Cultivator.

Description: Patent for a combined harrow and cultivator that can easily change between the two. It consists of a beam with front and back removable tooth-seats, handles, adjusting holes in the beam, a perforated plate on the top and bottom sides of the beam, pins, and a wedge-shaped key between the bar and a slot in a tooth.
Date: July 25, 1893
Creator: West, Edward B.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Air Pump.

Description: Patent for improvements in air pumps pertaining to their ability to inflate pneumatic tires.
Date: May 25, 1915
Creator: Messerli, John J.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Anal Speculum.

Description: Patent for a new and improved anal speculum. This design is "to so construct the several parts that there will be no rough or raised edges to interfere with its insertion in the anal passage; secondly, to so construct [the] improved speculum that it may be readily used as a bi-valve or dilator; thirdly, to form a locking-joint on the meeting edges of the shells forming the speculum, whereby the sections are prevented from overlapping each other to avoid pinching or injury to the walls of the an… more
Date: March 25, 1890
Creator: Shuford, Quincy Adams
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Angle-Cock.

Description: Patent for "a new and improved angle-cock so constructed that the plug cannot be turned by an unauthorized person without the knowledge of the engineer in charge of the train." (Lines 8-12) Includes instructions and illustrations.
Date: August 25, 1896
Creator: Waldron, William J.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Antifriction Clasp.

Description: Patent for a new and improved anti-friction clasp. This design "is to provide means whereby the wear due to the rubbing of inclosed rods or ropes against an inclosing casing may be reduced to a minimum and whereby the central alignment of the rods or ropes with respect to the inclosing casing may be accurately preserved" (lines 11-17). It consists in "a series of friction balls or rollers mounted therein and projecting from the periphery thereof and being divided into sections adapted to be cla… more
Date: October 25, 1892
Creator: Black, William L.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Animal-Trap.

Description: Patent for an animal trap meant to trap animals that burrow in the ground, such as prairie dogs. The trap catches the animal when it leaves its den and the animal cannot escape the trap.
Date: April 25, 1893
Creator: Manning, James
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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