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Puzzle.

Description: Patent for a simply constructed puzzle with a difficult solution, "but may be accomplished by the exercise of care, skill, and ingenuity in the manipulation of the device" (lines 15-18). It is a rectangular box with eight balls, four of which fit into holes in the corners of the box. There are segmented walls surrounding the holes.
Date: January 5, 1897
Creator: Collis, Michael Francis
Partner: UNT Libraries Government Documents Department

Nut-Lock.

Description: Patent for nut-locks specifically adapted for use on railroads. Includes instructions and illustrations.
Date: February 16, 1897
Creator: Reilly, George
Partner: UNT Libraries Government Documents Department

Self Heating Branding Iron.

Description: Patent for a self heating branding iron, which allows for branding irons to be easily attached and detached from portable sources of fuel.
Date: January 14, 1902
Creator: Lowe, M. A.
Partner: UNT Libraries Government Documents Department

Engine-Starter

Description: Patent for an engine starter "operated by compressed air and which may be brought into operative connection with the fly wheel of the engine to be started, whereby said fly wheel is rotated."
Date: June 2, 1914
Creator: Fruehbeck, Edgar F.
Partner: UNT Libraries Government Documents Department