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Mail-Bag-Handling Apparatus.

Description: Patent for "a mail-bag handing apparatus, and more specifically [an] apparatus designed to practically simultaneously deliver and receive bags or pouches containing mail or other matter, to and from a moving train or body" (lines 9-14), including instructions and illustrations.
Date: November 18, 1913
Creator: Brunkenhoefer, Henry F.
Partner: UNT Libraries Government Documents Department

Window-Shade-Operation-Lever.

Description: Patent for an invention that provides a simple and relatively inexpensive means for operating window shades without involving a spring roller.
Date: March 18, 1919
Creator: Lee, William
Partner: UNT Libraries Government Documents Department

Propellor Pitchometer.

Description: Patent for instruments which measure the pitch of propeller blades.
Date: May 18, 1915
Creator: Frank, Lawrence
Partner: UNT Libraries Government Documents Department

Hinge Construction.

Description: Patent for a hinge so that doors hung by the use of the hinge will not slam or move casually into a closed position.
Date: June 18, 1918
Creator: Weaver, James J.
Partner: UNT Libraries Government Documents Department

Self-Oiling Handsaw.

Description: Patent for invention of a handsaw which is an improvement of current version. This is simple, low cost and convenient handsaw and is operated easily without removing the grip.
Date: July 18, 1916
Creator: Pearson, Robert Bartley
Partner: UNT Libraries Government Documents Department

Automobile Torpedo

Description: Patent for a submarine torpedo which explodes in the hull of a vessels it hits.
Date: July 18, 1911
Creator: Douglas, William M.
Partner: UNT Libraries Government Documents Department

Life-Saving Device.

Description: Patent for a collapsible life-saving device that can be stored in little space on a ship or dock and unfolded quickly for use as a flotation device for several persons.
Date: March 18, 1913
Creator: Bradford, Thomas C.
Partner: UNT Libraries Government Documents Department
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