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Puzzle

Description: Patent for a puzzle. Illustration included.
Date: July 19, 1904
Creator: Strickland, M. Nichols
Partner: UNT Libraries Government Documents Department

Rail Fastening or Chair.

Description: Patent for a rail fastening, which prevents spreading of the rails and tilts them slightly inward.
Date: January 19, 1909
Creator: Nogle, Charles Johnson & Haas, George
Partner: UNT Libraries Government Documents Department

Friction-Clutch

Description: Patent for "a clutch wherein the members composing the clutch are adapted to transmit motion from one to the other by frictional engagement thereof " (lines 12-15) including instructions and illustrations.
Date: June 19, 1900
Creator: Ford, James Thomas
Partner: UNT Libraries Government Documents Department

Automatic Railway Switch

Description: Patent for an automatic railway switch. Illustration included.
Date: September 19, 1905
Creator: Ditmars, Frederick R. S. & Hendrix, A. S.
Partner: UNT Libraries Government Documents Department
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