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Bridge Construction.

Description: Patent for '' bridge improvements, especially for placement over gutters, ditches, and alike ''
Date: June 21, 1921
Creator: McKenzie, Philip A.
Partner: UNT Libraries Government Documents Department

Improvement in Nails.

Description: Patent for a nail with hexagonal form with two sides nearly flat and beveled edges.
Date: January 21, 1873
Creator: Hall, William N.
Partner: UNT Libraries Government Documents Department

Improvement in Portable Fences.

Description: Patent for portable fencing with sections that can be connected and set up in a particular area, or removed and put elsewhere at will.
Date: April 21, 1874
Creator: Griffin, James Lee
Partner: UNT Libraries Government Documents Department

Storm-Cellar

Description: Patent for a storm cellar. Illustrations included.
Date: February 21, 1911
Creator: Leddy, Herbert L.
Partner: UNT Libraries Government Documents Department

Hoisting Apparatus.

Description: Patent for a hoisting apparatus for use in cranes.
Date: March 21, 1911
Creator: Fischer, Fritz, Jr.
Partner: UNT Libraries Government Documents Department

Specification of Letters Patent.

Description: Patent for improvements in the seals for well screens to provide a permanent joint or seal between the screen and the casing with out blocking passage.
Date: June 21, 1921
Creator: Thomson, Alexander
Partner: UNT Libraries Government Documents Department

Saw Attachment.

Description: Patent for a handsaw attachment that gauges the depth to which one wishes to cut. It is a bar with an extended foot and clamping devices for attaching the device to the top and handle of the saw.
Date: July 21, 1896
Creator: Gowdan, Richard H.
Partner: UNT Libraries Government Documents Department

Structural Unit.

Description: Patent for a structural unit for use in construction. It repurposes crushed metal containers to create a core covered by an outer shell made of cement or similar material.
Date: June 21, 1921
Creator: Lambert, John Raymond
Partner: UNT Libraries Government Documents Department

Side Rail for Suspension-Bridges.

Description: Patent for a side rail for suspension bridges that is meant "to provide an improved side railing constituting a truss, which will be light, durable, and of structural simplicity" (lines 20-23).
Date: March 21, 1893
Creator: Runyon, Edwin Elijah
Partner: UNT Libraries Government Documents Department

Expansion-Plug.

Description: Patent for "an expansion plug wherein a traveling nut cooperates with a screw to expand or contract a sectional plug" (lines 8-11) with illustration.
Date: May 21, 1918
Creator: Barlow, Walter S.
Partner: UNT Libraries Government Documents Department

Mold for Forming Walls and Floors

Description: Patent for mold to create walls and floors. This mold creates walls and floors that are air and sound proof.
Date: October 21, 1919
Creator: Murdock, Walter Scott
Partner: UNT Libraries Government Documents Department

Digging-Machine.

Description: Patent for an improved, simple, effective, and durable excavator meant to remove sand-bars. It consists of a hollow drum that is drug across the sandbar, and it picks up sand with shovels on the drum.
Date: November 21, 1893
Creator: Bentinck, Eliza J. & Renner, Julia A.
Partner: UNT Libraries Government Documents Department

Improvement in Pipe and Bar Cutters

Description: Patent for a new and improved pipe and bar cutter, which cuts metal and steel. This design is simple, convient, and effective, including illustration.
Date: May 21, 1877
Creator: Astall, Jesse
Partner: UNT Libraries Government Documents Department
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