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Miter and Framing Square.

Description: Patent for a new and improved miter and framing square. This design "consists in the improved arrangement and construction of graduated scales, whereby I attain superior advantages in point of simplicity, durability, inexpensiveness, and general efficiency" (lines 11-15).
Date: November 20, 1883
Creator: Bolles, James H.
Partner: UNT Libraries Government Documents Department

Screw Propeller.

Description: Patent for a new and improved screw propeller. This design "connect[s] propellers on the opposite sides of a vessel with one another and with a stern propeller, so that they will act at the same time upon different parts of the vessel in urging her forward," which leads to increased speed (lines 7-11).
Date: March 20, 1883
Creator: Gartner, John
Partner: UNT Libraries Government Documents Department
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