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Cleaning Apparatus.

Description: Patent for a vacuum for cleaning cotton gins that attaches to the pneumatic elevators generally found in cotton gins.
Date: April 9, 1907
Creator: Sadler, Arthur E.
Partner: UNT Libraries Government Documents Department

Bale-Tie.

Description: Patent for a bale tie that can withstand strain on the side of the band. The text describes the different parts of the bale tie and how it differs from ones currently used.
Date: April 8, 1913
Creator: Franz, Ezra A.
Partner: UNT Libraries Government Documents Department

Advertising Device

Description: Patent for an Advertising Device. This device provides "a series of hinged leaves so mounted that those exposed to view have the experience of being part of a book." (lines 14-17). "A further object is to provide means which will conceal the operating mechanism, and mystify the observer" (lines 23-25), with a "supporting structure and a dummy provided with a movable hand...for turning said movable shaft as the leaves are turned" (lines 3-13).
Date: April 6, 1912
Creator: Friedman, Bernard Z.
Partner: UNT Libraries Government Documents Department

Air-Compressor.

Description: Patent for a more efficient air compressor with high and low pressure chambers formed of mating sections that can be detached to make repairs to the piston as necessary.
Date: April 1, 1913
Creator: Murphy, Edward
Partner: UNT Libraries Government Documents Department

Air Brake Attachment.

Description: Patent for "mechanism for use in connection with railway cars for automatically controlling the air brakes," including instructions and illustrations.
Date: April 17, 1917
Creator: Flowers, Malon Inghram
Partner: UNT Libraries Government Documents Department

Cattle-Yoke.

Description: Patent for a cattle yoke which enables the yoke to be attached to a cow's head to prevent grazing from other side of the wire fence.
Date: April 27, 1915
Creator: Carr, Jessie D.
Partner: UNT Libraries Government Documents Department

Ant-Trap

Description: Patent for a trap for ants and other burrowing insects which works at the site of the ant-hill or burrow.
Date: April 13, 1915
Creator: Cox, Samuel L.
Partner: UNT Libraries Government Documents Department

Ant-Trap

Description: Patent for an ant rap designed to catch ants and burrowing insects that are destructive to vegetation. Illustrations included.
Date: April 20, 1909
Creator: Fly, Nathaniel D.
Partner: UNT Libraries Government Documents Department

Compound Railway-Rail

Description: Patent for a compound railway-rail. This invention is a solid open jointed rail whereby two longitudinal section may be brought together without creating open joints. Illustration included.
Date: April 23, 1907
Creator: Stephens, George B.
Partner: UNT Libraries Government Documents Department

Compound Tool

Description: Patent for a compound tool. This invention consists of multiple tools in one. Illustration included.
Date: April 26, 1904
Creator: Highsmith, Aubrey O.
Partner: UNT Libraries Government Documents Department

Articulating Plate

Description: Patent for "new and useful articulating plate" (lines 5-6), including illustration and instructions.
Date: April 11, 1900
Creator: Driskill, Theodore Frederick
Partner: UNT Libraries Government Documents Department
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