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Windmill.

Description: Patent for improving windmills by attaching the vanes at angles that best match the wind's direction.
Date: February 12, 1918
Creator: Liles, Leander W.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Screw-cutting Die.

Description: Patent for a screw-cutting die, including illustrations. The invention includes "a die-plate of special construction, adapted to cut either right or left hand threads" (lines 12-13).
Date: February 6, 1883
Creator: Müller, Joseph
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Rivet-Set.

Description: Patent for an improvement in rivet-sets which having various sizes of holes and cavities for cutting and setting; it can be riveted by hand or machine. Illustration is included.
Date: February 10, 1891
Creator: Wilson, William A.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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