UNT Libraries Government Documents Department - 694 Matching Results

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Description: Patent for an account index card holder with “superposed parallel arms” (lines 111-112) that allow portions of the front and reverse side of each card to be visible. The holder and its supports may be used with a system for organizing, tracking, and indexing accounts.
Date: November 4, 1913
Creator: Roach, William Eli.

Acetylene-Gas Apparatus.

Description: Patent for machines that generate acetylene gas for a "simple and comparatively inexpensive construction, in which the gas is thoroughly washed before entering the service-pipe and in which the water-supply to the generator is controlled by the gas pressure and the carbid kept at all times cooled by surrounding water" (lines 11-17).
Date: December 4, 1900
Creator: McGoldrick, William Hamilton

Adjustable Bench Hook.

Description: Patent for a new and improved bench hook. This design "consists in a bench-hook constructed with a plate carrying a sliding bar, to which is adjustably secured a hook. The sliding bar and hook are locked in place by a clamp and cam attached to the plate, and the plate and its attachments are locked to the bench-front by a stationary lug attached to the plate, and a moveable lug attached to a lever pivoted to the said plate and locked in place by a cam, so that the said hook can be readily adjusted upward, downward, forward, and backward" (lines 20-30).
Date: July 22, 1884
Creator: Cooper, Harry


Description: Patent for an aeroplane which has its equilibrium maintained by the operator through levers that bring the plane up or down.
Date: December 6, 1910
Creator: McManus, Augustus F. W.

Air Compressor for Deep Well Pumps.

Description: Patent for a new and improved air-compressor. This design "relates to improvements in air-compressing mechanism for the purpose of pumping for forcing from deep wells and performing similar work; and it consists in the construction and arrangement of a larger and smaller air-cylinder, and the combination therewith of mechanism to force the air from the larger into the smaller cylinder to increase the air-pressure in the latter" (lines 22-30).
Date: August 2, 1887
Creator: Adams, John R.

Amusement Device

Description: Patent for an amusement device. This invention is designed as an apparatus for a swing, a trapeze, a horizontal bar, and seesaw. Illustration included.
Date: December 18, 1906
Creator: Haye, August, of San Antonio, Texas


Description: Patent for a live animal trap that uses a trigger and allows for live bait. Wire fabric is used to prevent animals from digging and escaping.
Date: March 3, 1914
Creator: Herring, Henry H.