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Nut-Lock

Description: Patent for a nut lock that utilizes a spring coil to enable rotation.
Date: February 22, 1916
Creator: Millard, William R.
Partner: UNT Libraries Government Documents Department

Plow

Description: Patent for a plow. This plow is equipped with a cutter or knife that follows the furrow to guide the plow blade. Illustration included.
Date: February 11, 1908
Creator: McCasland, Charles K.
Partner: UNT Libraries Government Documents Department

Scraper.

Description: Patent for a scraper for floors and walls that attaches to a broom handle.
Date: February 27, 1912
Creator: Pettit, Lee
Partner: UNT Libraries Government Documents Department

Improvement in Rotary Engines.

Description: Patent for Improvement in Rotary Engines concerning "the arms of the frame" (lines 9), which are powered by steam and "steam valves with arms" (line 17) including a detailed explanation and description of the illustration.
Date: February 5, 1878
Creator: Evens, George
Partner: UNT Libraries Government Documents Department

Improvement in Sulky-Plows.

Description: Patent for an invention of a new and improved sulky-plow, "which shall be so constructed that it may be readily adjusted to cause the plow to take or leave land, and to work at any desired depth in the ground, which will enable the plow to be readily raised from the ground" (lines 13-17). Illustrations included.
Date: February 20, 1877
Creator: Riddle, William N.
Partner: UNT Libraries Government Documents Department

Gas-Vent for Molds.

Description: Patent for a gas-vent for molds. Its object is "to provide a simple and cheap construction whereby free escape of the gas or air is permitted form the mold into which molten metals...are to be poured for the purpose of forming a casting" (lines 12-18). Construction of the vent may vary.
Date: February 2, 1897
Creator: Streetman, Willard
Partner: UNT Libraries Government Documents Department

Pumping Apparatus.

Description: Patent for improvements to a pumping apparatus "to provide a simple, inexpensive, and easily-operated apparatus through the medium of which water may be forced from a well, stream, or other source of supply by the weight of a person" (lines 14-18).
Date: February 17, 1903
Creator: Simmons, Jessie W.
Partner: UNT Libraries Government Documents Department

Wheelwright-Machine.

Description: Patent for a wheelwright machine for attaching tires to wheels that includes a sliding wrench.
Date: February 13, 1921
Creator: Gosett, Allen Davis
Partner: UNT Libraries Government Documents Department
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