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Car-Coupling.

Description: Patent for "improvements in car couplings and it has for its general object to provide a coupling embodying such a constructions that two cars may be connected together or disconnected without the objectionable necessity of a trainman going between them." (Lines 11-17) Includes instructions and illustrations.
Date: November 6, 1894
Creator: Tunnell, John D.
Partner: UNT Libraries Government Documents Department

Window Frame And Sash.

Description: Patent for new and useful improvements in window frames and sashes, including instructions and illustrations.
Date: February 6, 1900
Creator: Wood, Alpheus H. & Tunnell, John D.
Partner: UNT Libraries Government Documents Department

Frog and Guard Rail for Railway Tracks

Description: Patent for a frog and guard rail for railway tracks. Illustration included.
Date: June 6, 1911
Creator: Thomas, John W.
Partner: UNT Libraries Government Documents Department
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