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Advertising Device.

Description: Patent for an advertising machine that is motor-operated and will display a succession of slides that can be shown during the day or at night. It includes a light to help show slides to the public, a shutter that automatically and intermittently displays slides, a lens for projecting slides on a distant screen, and a master slide to be shown with each slide. The patent includes illustrations.
Date: August 5, 1913
Creator: Bernard, Oscar C.
Partner: UNT Libraries Government Documents Department

Apparatus for Oiling Railway-Tracks.

Description: Patent for improvements in mechanism for “applying oil to curves and switches of street railway tracks” (lines 6-7) by using an “oil-tank [that] is arranged in the upper position of the hood or shield over the car-wheel. The valve is in the bottom of the oil-space and may be controlled by a lever arranged to turn or lift in the valve, and under the valve is arranged the oiling-wheel, which runs lightly on the track or face of the car-wheel and applied the oil." (Page 2, lines 69-76) Includes il… more
Date: August 4, 1891
Creator: Ennis, Thomas L.
Partner: UNT Libraries Government Documents Department

Metal-Working Device.

Description: Patent for a hand-operated device that bends and shears metal at any desired angle and length.
Date: August 16, 1921
Creator: Bussel, Herman
Partner: UNT Libraries Government Documents Department

Combined Cigar-Clipper and Match-Box.

Description: Patent for a combined cigar-clipper and match-box "in which the matches will be delivered with a regular feed, so that it will be highly inconvenient for persons to carry away more than one or two matches" (lines 10-13).
Date: August 18, 1896
Creator: Campo, Ysidro Del
Partner: UNT Libraries Government Documents Department

Continuous Vacuum Dehydrator.

Description: Patent for improvements in speed, cheapness, and more efficiency in continuous-vacuum dehydration and filtering for the purpose of extracting valuable ores with water including instructions and illustrations.
Date: August 20, 1918
Creator: Biesel, Charles
Partner: UNT Libraries Government Documents Department
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