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Nut Lock.

Description: Patent for a keyed lock for nut and bolt that is removable and does not damage the threads.
Date: December 20, 1892
Creator: Crisp, James E.
Partner: UNT Libraries Government Documents Department

Quilting Attachment for Sewing-Machines

Description: Patent for a quilting attachment for sewing frames so that they can be easily folded up and stored, with durable and easy to use parts that are also inexpensive to make.
Date: December 20, 1892
Creator: Dickey, John S.
Partner: UNT Libraries Government Documents Department

Detachable Fastener for Cylindrical Screens.

Description: Patent for a more efficient and effective seeding device that can disconnect, reconnect, and fasten the ends of a strip of material to form a cylinder.
Date: July 20, 1920
Creator: Leach, William Logan
Partner: UNT Libraries Government Documents Department

Building Block Machine

Description: Patent for a building block machine. This invention is used to form blocks out of plastic material into artificial stone, as well as molding concrete blocks. Illustrations included.
Date: November 20, 1906
Creator: Latimer, Samuel A.
Partner: UNT Libraries Government Documents Department
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