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Lock

Description: Patent for a lock. Illustrations included.
Date: April 21, 1908
Creator: Winslow, Walter W.
Partner: UNT Libraries Government Documents Department

Lock

Description: Patent for a lock. Illustrations included.
Date: April 21, 1908
Creator: Winslow, Walter W.
Partner: UNT Libraries Government Documents Department

Music-Holder.

Description: Patent for an adjustable, simple, inexpensive, and light music-holder that does not let the music slip and does not damage the music. The clamps will not get in the way of the music, and holds a book as easily as a sheet of music. Springs are not used, the staff is telescopic, and should be made from aluminum.
Date: April 30, 1895
Creator: Gross, Frederick D.
Partner: UNT Libraries Government Documents Department

Electric Battery.

Description: Patent for a new and improved electric battery. This design consists "[i]n an electric generator, a receptacle for steam, and means for admitting steam thereto, in combination with electrodes consisting of two parallel disks suspended within said steam-receptacle, electrodes of opposite polarity to the aforesaid electrodes arranged between the disks of the first-named electrodes, a shaft extending through the said receptacle upon which the latter electrodes are mounted, and means for rotating t… more
Date: April 19, 1892
Creator: Emley, James Edward
Partner: UNT Libraries Government Documents Department

Derailer

Description: This is a patent for a railway Derailer. This new derailer is less expensive, easier to manufacture, and will be an improvement over older models. For example, it is easier to attach to the rail track and more efficient at stopping railroad collisions.
Date: April 22, 1919
Creator: Gravis, James. C
Partner: UNT Libraries Government Documents Department

Refrigerating Apparatus.

Description: Patent for "improvements in refrigerating apparatuses, more particularly to those for the purpose of hardening ice cream" (lines 8-11) including instructions and illustrations.
Date: April 28, 1914
Creator: Mackin, Sam
Partner: UNT Libraries Government Documents Department

Blind Stop.

Description: Patent for a new and improved blind-stop. This design is "to provide a cheap and simple device designed to be secured to a window-casing and be interposed between any two adjacent pivoted slats, and thus support the same and the series in an open position and against accidental closing by their own weight or by the wind" (lines 9-16). It consists in the "holder for slats of blinds, consisting of a spring-metal strip bent at its center to form an eye and opposite terminals, the latter being adap… more
Date: April 19, 1892
Creator: Deats, Wallen S. & Brown, Daniel
Partner: UNT Libraries Government Documents Department

Composition for Removing Boiler-Scale

Description: Patent for "an extract of the plant know to botanists by the name 'Larrea Mexican,' to be used in removing boiler-scale and in preventing the reformation of the same" (lines 9-13).
Date: April 16, 1901
Creator: Pena, Benjamin
Partner: UNT Libraries Government Documents Department
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