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Controlling System for Motor Traction-Cars

Description: Patent for a controlling system for motor traction cars which is automatic.
Date: November 1, 1910
Creator: Mayo, William C.
Partner: UNT Libraries Government Documents Department

Apparatus for Making and Laying Continuous Concrete Pipe

Description: Patent for a motorized construction vehicle which has a cement mixer and a trench digger on it that allows for the continuous laying of concrete pipes for irrigation.
Date: March 22, 1910
Creator: Wiggins, John L.
Partner: UNT Libraries Government Documents Department

Ore Concentrator

Description: Patent for a "machine for separating ores of precious metals, and particularly to that class of machines known as 'dry concentrators or separators,' used for separating fold ore by means of an air-blast over dry sand, gravel, quartz, etc." (lines 10-15). Illustrations and instructions are included.
Date: August 17, 1897
Creator: Waer, Luis M.
Partner: UNT Libraries Government Documents Department