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Cotton-Chopper.

Description: Patent for a cotton-chopper meant to be the most simply constructed. The hoes are attached to a rotating cylinder in the center of the frame, and the hoes rotating is what chops the cotton.
Date: March 9, 1897
Creator: Hopkins, Benjamin F.
Partner: UNT Libraries Government Documents Department

Envelop-Seal.

Description: Patent for an envelop seal composed of a metal piece with two arms, which are threaded through a hole in the envelop and pressed down into the sticky gum surface on the inside of the envelop flap.
Date: March 9, 1909
Creator: Bennick, Henry
Partner: UNT Libraries Government Documents Department

Piston for Pneumatic Pumps.

Description: Patent for improvements in pistons for pneumatic pumps by using a combination of a tubular shell, a cylindrical valve, a conical aperture and a conical projection to fulfill the conditions required of a piston in pumps. Illustration is included.
Date: March 31, 1891
Creator: Robinson, Charles H.
Partner: UNT Libraries Government Documents Department

Fire-Arm.

Description: Patent for an improvement to adjusting rifle barrels and holding those adjustments in place. Includes illustrations.
Date: March 8, 1887
Creator: Alston, William F.
Partner: UNT Libraries Government Documents Department

Apparatus for Aging Whisky.

Description: Patent for a barrel for heating and aging whiskey, which accelerates aging time. Includes instructions and illustrations.
Date: March 1, 1892
Creator: Halligan, John H.
Partner: UNT Libraries Government Documents Department
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