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Plow Attachment.

Description: Patent for a plow attachment for turning the subsoil while the main plow opens the furrow that can be adjusted to any depth desired and attached to all types of plows.
Date: April 30, 1907
Creator: Tunnell, Wilson B.
Partner: UNT Libraries Government Documents Department

Device for Elevating Wagon-Bodies.

Description: Patent for a pulley system for elevating wagons off the ground and "keeping them suspended under the roof of a barn or other roofed structure while not in use" (lines 19-21), including instructions and illustrations.
Date: March 30, 1880
Creator: Booker, David
Partner: UNT Libraries Government Documents Department

Railway Switch

Description: Patent for a railway switch. Illustration included.
Date: December 30, 1904
Creator: Riley, George Marshall
Partner: UNT Libraries Government Documents Department

Poultry-Crate.

Description: Patent for an improved version of the Poultry-Crate, including illustrations. This version was designed with efficiency in mind, devised to be an inexpensive and highly portable invention.
Date: August 30, 1921
Creator: Tucker, William
Partner: UNT Libraries Government Documents Department
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