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Valve Construction

Description: Patent for improved valve construction which permits unobstructed passage from valves to intake and exhaust pipe in motor vehicles.
Date: February 5, 1918
Creator: Smith, Thomas Noah
Partner: UNT Libraries Government Documents Department

Locking System For Jail-Doors.

Description: Patent for a new locking system for jail-doors with a unique arrangement of parts, including specifications and illustrations.
Date: May 5, 1914
Creator: Youngblood, David Franklin
Partner: UNT Libraries Government Documents Department

Double Action Well Pump

Description: Patent for a double action well pump that only uses a single cylinder
Date: December 5, 1916
Creator: Jacob, Ernst A. H.
Partner: UNT Libraries Government Documents Department

Metallic Railway-Tie.

Description: Patent for a metallic railway tie, which can expand and hold the track in place.
Date: April 5, 1910
Creator: Allsbrooks, William Jefferson
Partner: UNT Libraries Government Documents Department

Spring-Washer for Piano-Flanges.

Description: Patent for a spring washer for piano flanges that prevents the flanges from becoming loose over time.
Date: December 5, 1911
Creator: Mayor, Enoch Allen
Partner: UNT Libraries Government Documents Department

Case for Motion-Picture Films

Description: Patent for a case for motion picture films that protects the film from damage when rewinding or transferring from one reel to another. The case also ensures that the film will be wound uniformly.
Date: October 5, 1915
Creator: McNeel, William Pinkney
Partner: UNT Libraries Government Documents Department

Attachment for Windmills.

Description: Patent for a windmill attachment that will increase the pumping capacity of windmills or other lifting pumps.
Date: March 5, 1912
Creator: Engle, Matthew H.
Partner: UNT Libraries Government Documents Department

Advertising-Sign.

Description: Patent for an advertisement sign with a translucent display band that illuminates different sections of letters, numbers, or figures, in various colors, giving the appearance of animation.
Date: August 5, 1919
Creator: Craig, Richard M.
Partner: UNT Libraries Government Documents Department

Aeroplane

Description: Patent for an aeroplane that will maintain its balance in the air automatically
Date: December 5, 1911
Creator: McManus, Augustus F. W.
Partner: UNT Libraries Government Documents Department

Combined Latch and Lock for Screen Doors, etc.

Description: Patent for a combined latch and lock for screen doors and other uses. Illustration included.
Date: February 5, 1912
Creator: Hart, Joel T. & Hart, John D.
Partner: UNT Libraries Government Documents Department

Adding-Machine

Description: Patent for improvements to adding machines, which is key-operated and includes a vertically disposed shaft and a means to actuate the sliding plate.
Date: January 5, 1915
Creator: Gatewood, William F.
Partner: UNT Libraries Government Documents Department
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