UNT Libraries Government Documents Department - 3 Matching Results

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Ant Trap.
Patent for a new and improved ant trap. This design "compris[es] the sides adapted to encompass an anthill and composed of a bottom, inclined walls, and horizontal top portions, having depending inclined flanges, one of the sides having an opening in its bottom and provided with ways arranged on opposite sides of the opening, a removable receptacle provided with flanges arranged in said ways and having inwardly-inclined walls, and a discharge-tube arranged at one corner of the trap" (lines 77-87).
Car-Coupling
Patent for improvements to railroad car couplings granted to Conrad H. Carpenter. Improvements simplify the coupling construction and allow the cars to be couples automatically.
Extension-Ladder.
Patent for a new extension ladder, including illustrations.
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