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Drift Valve.

Description: Patent for a drift valve for locomotive engines to effect automatic diversion of exhaust steam from the air pump to the smoke box, after the steam from the main throttle has been shut off.
Date: January 3, 1922
Creator: Gilman, Benoist P.
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Partner: UNT Libraries Government Documents Department

Corn-Husker.

Description: Patent for certain new and useful improvements in corn huskers, including instructions and illustrations.
Date: August 29, 1899
Creator: Stahl, Adolf
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Partner: UNT Libraries Government Documents Department

Bale-Tie.

Description: Patent for a new and improved bale tie. This design utilizes a strap-iron binder with notches along the sides that allow for a bail to clamp firmly within them; thus, the bale is fastened.
Date: December 30, 1879
Creator: Johnson, Jordan
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Partner: UNT Libraries Government Documents Department

Air-Cooling Apparatus.

Description: Patent for an air cooling apparatus for air to be delivered into a room treated with moisture to reduce the temperature of the air without the use of ice.
Date: March 21, 1916
Creator: Hollenburger, Joseph
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Partner: UNT Libraries Government Documents Department

Artificial-Stone Composition

Description: Patent for "an artificial stone adapted for all purposes to which natural stone can be applied, and which can be given any desired shape while in a plastic state, or carved and polished after hardening" (lines 12-18).
Date: January 28, 1890
Creator: Blackmon, Albert M.
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Partner: UNT Libraries Government Documents Department

Barber's Paper Clip.

Description: Patent for a new and improved barber's paper clip. This design calls for "a clip formed by doubling upon itself a [flat] strip of metal," which will hold sheets of paper on which barbers can sharpen their razors. A hook exists on the opposite side, by which the paper clip can hang from the hot towel on the customer's face.
Date: January 17, 1882
Creator: Cohen, Moses
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Partner: UNT Libraries Government Documents Department
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