UNT Libraries Government Documents Department - 87 Matching Results

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Improvement in Fish and Animal Traps

Description: Patent for an improvement in the design of traps intended for catching fish or animals. Includes illustration.
Date: September 18, 1872
Creator: Hartcourt, John T.

Improvement in Ground-Squirrel Exterminators.

Description: Patent for an "improved apparatus by means of which ground-squirrels and gophers can be destroyed in their holes, conveniently and effectively, and at small expense" (para. 4). The mechanism works by gassing underground vermin with sulphuric fumes.
Date: July 10, 1877
Creator: Dreyer, Henry

Improvement in Insect-Destroying Compounds

Description: Patent for improvement in insect,specifically cotton worms, destroying compounds . Included list of chemicals and measures of amount used.
Date: March 3, 1874
Creator: Johnson, Jehu W.

Improvement in Portable Fences.

Description: Patent for new and useful improvements in fences made in sections or panels. It consists in the construction and arrangement of the brackets or supports for the panels.
Date: January 12, 1875
Creator: Johnson, Jehu W.

Improvement in Processes for Destroying Ants.

Description: Patent for a method of destroying ants by digging a pit beside a colony, filling the hole with combustible materials and poisons, placing a pipe through the hole and into the mound, and then setting the pit ablaze.
Date: October 28, 1873
Creator: Dulany, John J. & Dreyer, Henry

Improvement in Safety-Guards for Cars.

Description: Patent for "certain new and useful Improvements in Safety-Guards for Cars" (lines 5-6) intended to pervent derailment of railway cars, including a detailed explanation and description of the illustration.
Date: February 5, 1878
Creator: Harding, John W. & Towell, Issac

Improvement in Street-Cars

Description: Patent for an improvement to Street Cars to better navigate curves. Includes description and illustrations.
Date: August 26, 1879
Creator: Towell, Isaac

Improvement in Vehicle-Springs

Description: Patent for a newly designed vehicle spring that attached to the axle and features an auxiliary spring.
Date: May 22, 1877
Creator: Faber, Fredrick W.

Improvement in Windlass Water-Elevators

Description: Patent for an improvement in Chain-Wheels consisting "in the construction and arrangement of a device for drawing water from wells, which shall be cheap, convenient, and free from danger, as will be hereinafter more fully set forth."
Date: October 15, 1878
Creator: Knipscheer, John

Insect Destroyer.

Description: Patent for a new and improved insect trap. This design "relates to certain new and useful improvements in devices for distributing liquid poison on cotton and other plants to destroy insect life thereon; and it consists in the [novel] construction and arrangement of parts" (lines 14-18).
Date: July 18, 1882
Creator: Binkley, James E.

Lifting Jack.

Description: Patent for lifting-jack invented by Calvin W. and Eugene Tanner. This lifting-jack invention is meant to be more durable in material, the material more inexpensive to acquire.
Date: July 3, 1906
Creator: Tanner, Calvin W. & Tanner, Eugene

Machine for Sharpening Gin-Saws

Description: Patent for "a machine of this class which shall be simple, durable, an d easily manipulated, and by means of which the teeth of gin-saws may be sharpened in a rapid, convenient, and effectual manner" (lines 9-14).
Date: July 1, 1890
Creator: Smith, John Quince

Motor.

Description: Patent for a new and improved motor. This design consists "[i]n a fan motor, the V-shaped frame, the shafts journaled in the upper corners thereof, the ratchet-wheels and spur-wheels secured to said shafts, the spring-actuated pawls pivoted to the frame and engaging the ratchet-wheels, sleeves loose on shafts, and having the spur-wheels fast to said sleeves, the volute springs with their inner ends fast to shafts and their outer ends fast to wheels, the winding-shafts having the pinions engagin… more
Date: February 5, 1889
Creator: Heinsohn, Ernst Theodor & Hoffmann, John

Plow.

Description: Patent for improvements to the turning-plow, with convertible attachments for other forms of plow.
Date: December 11, 1900
Creator: Armstrong, John Joshua, Sr.

Plow

Description: Patent for a new type of plow granted to Anton Schindler.
Date: November 25, 1884
Creator: Schindler, Anton

Plow Attachment

Description: Patent for a plow attachment. This invention works with sweep plows and consists of a runner and secured to the end of the plow beam. Illustration included.
Date: January 1, 1907
Creator: Wiegert, Theodore & Neumann, Louis

Portable Extensible Ladder

Description: Patent for a portable extendable ladder, designed for use, among other things, as a means of fire escape or observation, along with illustrations and explanations.
Date: July 2, 1918
Creator: Trojan, J. E.

Post Hole Digger.

Description: Patent for a new and improved post-hole digger. This design "has for its object to provide a simple, durable, inexpensive, and efficient device, the levers of which can be readily separated, so that either of them can be used as a spade or shovel to fill in the earth around the post after it is placed in the hole" (lines 14-19).
Date: November 21, 1882
Creator: Armstrong, John J.

Post Hole Digger.

Description: Patent for a new post hole digger that both facilitates the creation of straight sides to the hole and a mechanism to allow for easy removal of the dirt.
Date: August 17, 1916
Creator: Armstrong, John Joshua, Sr.

Quilting Mechanism for Sewing-Machines.

Description: Patent for an improved, simple, inexpensive, and efficient quilting-frame and makes quilting much faster. "The frame is provided with a longitudinal bar having a groove to form a track, in which travels a gage-wheel, which is adjustable and held by a spring-arm, which serves, also, as a means of changing the position of the wheel" (lines 22-26).
Date: August 9, 1892
Creator: Delany, Charles William

Railroad-Trestle.

Description: Patent for improvements to current railroad trestles, in particular the truss work and supported structure. Improvements include ease of build and repair and a more practice and substantial design.
Date: December 8, 1914
Creator: Teters, Paul Albert
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