Metal-Coating Composition. (open access)

Metal-Coating Composition.

Patent for a metal coating composition to form a protective coating on metals and steel to prevent rust and corrosion.
Date: May 24, 1921
Creator: Ethridge, Thomas Jefferson
System: The Portal to Texas History
Voting Machine. (open access)

Voting Machine.

Patent for a new and improved voting-machine. This design consists in "the combination, with the transverse bridge, through the opening of which are fulcrumed by means of a pin two parallel keys, said keys having pivotally connected to their fulcrumed ends to parallel pawls, the free ends of which mesh with teeth in two ratchet-wheels carrying hands indicating on a dial and having eccentrics upon their faces, two parallel narrow plates moved by such eccentrics to indicate the complete revolution of the hands, and a shield upon the top" (lines 124-134).
Date: January 24, 1888
Creator: Ford, William W.
System: The Portal to Texas History
Watch-Pocket. (open access)

Watch-Pocket.

Patent for a holder or pocket for a watch that provides a simple, safe, and handy device which is detachable fastened to a garment.
Date: July 24, 1906
Creator: Greenwald, Louis.
System: The Portal to Texas History