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Lifting-Jack.

Description: Patent for a lifting-jack that has "strength with durability necessary in this class of devices and that will be simple in construction and easy of operation" (para. 2).
Date: September 24, 1895
Creator: Lynn, John McKinzie
Partner: UNT Libraries Government Documents Department

Door-Check

Description: Patent for a door check that holds a door open in a secured position. This particular door securer has a manual operation lock independent of the knob-spindle.
Date: February 24, 1903
Creator: Skidmore, John C. & Tyer, Author
Partner: UNT Libraries Government Documents Department
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