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Shovel.

Description: Patent for a shovel, which has a detachable blade and handle that can be securely fastened when in use and easily taken apart for transport.
Date: April 7, 1908
Creator: Ellison, John Wesley
Partner: UNT Libraries Government Documents Department

Nut-Lock.

Description: Patent for a strong, durable, and inexpensive nut lock that securely locks a nut onto a threaded bolt and can be easily unlocked. It also is simply constructed. It consists of a plank-like spring tongue that fits over the bolt and under the nut.
Date: November 28, 1893
Creator: Taini, John
Partner: UNT Libraries Government Documents Department

Nut-Lock.

Description: Patent for a nut lock with a locking washer at the base of the nut that does not unscrew. The nut forms a bar of spring metal.
Date: March 13, 1894
Creator: Mauermann, Albert J.
Partner: UNT Libraries Government Documents Department