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Safety-lock For Keyholes.

Description: Patent for improvements in safety-locks, which makes it secured against skeleton keys and lock-picking.
Date: April 9, 1912
Creator: Good, Titus E.
Partner: UNT Libraries Government Documents Department

Canal-Gate.

Description: Patent for an improvement to canal-gates that is "a simple and comparatively inexpensive contrivance for receiving a handle of the shank of a handle which is attached to the lock or gate" (lines 18-22) including an illustration.
Date: March 9, 1920
Creator: Perry, Charles Franklin
Partner: UNT Libraries Government Documents Department
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