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Valve

Description: Patent for a valve. Illustration included.
Date: August 17, 1909
Creator: Smith, Frederick C.
Partner: UNT Libraries Government Documents Department

Pipe Coupling.

Description: Patent for pipe coupling in which the ends of pipes have interlocking attachments which can be both dissembled and reinforced for protection against accidental disengagement.
Date: August 17, 1920
Creator: McCullar, Willie A. & Ayraud, Jules J.
Partner: UNT Libraries Government Documents Department

Signal

Description: Patent for a signal that allows trainmasters to move trains in sections. Illustration included.
Date: August 17, 1909
Creator: Cairncross, Robert L.
Partner: UNT Libraries Government Documents Department

Cuff-Link.

Description: Patent for new and useful improvements in cuff links that do not separate from sleeves and help with any decoration.
Date: August 17, 1920
Creator: Hall, James L.
Partner: UNT Libraries Government Documents Department
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