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Geometrical Instrument

Description: Patent for a geometrical instrument. This instrument is used to create a straight edge with pivoted blades, like a protractor, to be used for laying protracted angles, etc.
Date: March 26, 1918
Creator: Anderson, Andrew E.
Partner: UNT Libraries Government Documents Department

Knife-Sharpener.

Description: Patent for improvements in knife-sharpeners that can be clamped onto a table or similar object, including an illustration. The device has also been "adapted for use in connection with a pair of bits or cutters having convex cutting edges disposed in confronting relation, the bits or cutters being capable of adjustment to present new portions of the respective cutting edges for effective work as the occasion requires" (lines 17-23).
Date: February 5, 1918
Creator: Kirlin, Wiliam B.
Partner: UNT Libraries Government Documents Department

Irrigation Device.

Description: Patent for a new and improved irrigation device consisting of a swivel joint that can be quickly moved to start or stop the flow of water. The device is designed to be water tight and easily manipulated.
Date: October 8, 1918
Creator: Howard, Charles Samuel
Partner: UNT Libraries Government Documents Department
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