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Advertising-Machine

Description: Patent for an advertising machine for displaying various advertising cards in a motorized machine that displays all the different cards as it goes around in a circle.
Date: April 18, 1911
Creator: Helm, Virgil L.
Partner: UNT Libraries Government Documents Department

Railway-Rail Brace

Description: Patent for a rail brace to fortify the joints of railways. Illustrations included.
Date: July 18, 1911
Creator: Keaton, Walter A. & Peary, Andrew
Partner: UNT Libraries Government Documents Department

Oil-Tank.

Description: Patent for an oil tank that is fire proof and will not explode completely if it is struck by lightning.
Date: July 18, 1911
Creator: Price, James Bain
Partner: UNT Libraries Government Documents Department

Sash Balance and Lock

Description: Patent for a spring balance and lock for window sashes. Illustrations included.
Date: April 18, 1911
Creator: Huffman, Thadeus E.
Partner: UNT Libraries Government Documents Department

Well-Drilling Device.

Description: Patent for a well drilling device that uses wire cable in the drill.
Date: July 18, 1911
Creator: Owen, James T.
Partner: UNT Libraries Government Documents Department
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