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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

Well Mechanism.

Description: Patent for a well mechanism with an overhung vertical drive pulley which functions as a bearing and oil reservoir for improved lubrication of the bearings; also, improved pump construction and shaft support.
Date: July 18, 1911
Creator: Layne, Mahlon E.
Partner: UNT Libraries Government Documents Department
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