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Windmill.

Description: Patent for a windmill with vanes that can compensate for varying wind speeds without being damaged by high winds.
Date: October 21, 1919
Creator: Ochoa, Victor Leaton
Partner: UNT Libraries Government Documents Department

Tier.

Description: Patent for a retractable and reusable package tie device for packages.
Date: December 21, 1915
Creator: Clary, Irvin W.
Partner: UNT Libraries Government Documents Department

Torpedo-Guard.

Description: Patent for torpedo guards that can be applied without needing to place the vessel in a dry dock, as well as giving the option of retracting the torpedo guards when not needed. Includes illustrations.
Date: May 21, 1918
Creator: Rolf, Frederick G.
Partner: UNT Libraries Government Documents Department

Switch-Stand

Description: Patent for switch stands. The improvement is to provide a mechanism in connection with stands of the character specified for moving the points of a switch to deflect trains from the main track on to the switch, wherein locking mechanism is provided for locking the switch points in safety or main line position and connected to the operating mechanism for moving the points in such manner that when operating arm for the switch is moved into the inoperative position after returning the points to th… more
Date: September 21, 1915
Creator: Philips, Smith F.
Partner: UNT Libraries Government Documents Department

Cotton-Chopper

Description: Patent for a cotton chopper that can be used for cultivation.
Date: March 21, 1911
Creator: Crow, Jesse J.
Partner: UNT Libraries Government Documents Department

Automatic Train Stop

Description: Patent for an automatic train stop. Used to simplify the construction where fewer magnets and changeable switches are necessary. To provide an automatic train control mechanism with a normally closed circuit, the breakage or disarrangement of any part that would ensure the stopping of the train.
Date: May 21, 1918
Creator: Bulla, Melbern B.
Partner: UNT Libraries Government Documents Department

Automatic Train-Stop.

Description: Patent for mechanism to automatically sound alarm and shut off steam when a train passes a danger point.
Date: December 21, 1915
Creator: Bulla, Melbern Bernie
Partner: UNT Libraries Government Documents Department

Apparatus for Separating or Concentrating Ores.

Description: Patent for an improvement to hydraulic separators used in frothing classification to increase the recovery of larger mineral particles.
Date: October 21, 1919
Creator: Cole, David
Partner: UNT Libraries Government Documents Department
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