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Internal-Combustion Engine.

Description: Patent for a new and improved device within internal combustion engines "whereby water is converted into steam, and then delivered into the combustion chamber of an internal combustion engine" (lines 13-16). Includes illustrations.
Date: November 16, 1915
Creator: Harwood, William W.
Partner: UNT Libraries Government Documents Department

Machine-Gun.

Description: Patent for a machine gun, meant to have relatively few parts, that includes a belt to carry a large amount of cartridges. The machine gun "provides a structure wherein the cartridges are positively and consecutively fed to the explosion chamber" (lines 11-14).
Date: July 16, 1918
Creator: McManus, Luis M. & Warner, James Harold
Partner: UNT Libraries Government Documents Department

Well-Strainer.

Description: Patent for a well strainer, which is cheaper to make than previous ones without reducing efficiency.
Date: June 16, 1908
Creator: Brown, Arthur M.
Partner: UNT Libraries Government Documents Department

Valve-Grinder.

Description: Patent for a valve grinder that fit together perfectly to prevent leakage and a consequent loss of power.
Date: May 16, 1916
Creator: Atkin, Frank R.
Partner: UNT Libraries Government Documents Department

Wire Stretching Device for Fence Posts.

Description: Patent for a new and improved wire stretcher. This design consists in "[t]he combination of a fence-post, the coupled pulleys mounted thereon and adapted to be simultaneously rotated, independent fence-wires extending in opposite directions and attached to one of the pulleys at points thereon that are arranged close together, and binding-sleeves for preventing the rotation of the pulleys after the wires have been stretched" (lines 14-21).
Date: March 16, 1886
Creator: Priday, Henry
Partner: UNT Libraries Government Documents Department

Hydraulic Swivel.

Description: Patent for a hydraulic swivel used with wells including instructions and illustrations.
Date: May 16, 1911
Creator: Layne, Mahlon E.; Hall, Samuel N. & Layne, Charles F.
Partner: UNT Libraries Government Documents Department

Mail Delivery Apparatus

Description: Patent for improvements to mail delivery through sorting and distribution to different destinations with illustrations.
Date: December 16, 1919
Creator: Cobb, Albert C.
Partner: UNT Libraries Government Documents Department

Trolley-Wheel

Description: Patent for a trolley wheel and a mechanism for keeping the wheel on the trolley wire. Illustrations included.
Date: April 16, 1912
Creator: Schultze, William H.
Partner: UNT Libraries Government Documents Department

Protecting-Casing for Electrical Conductors

Description: Patent for "new and useful Improvements in Protecting-Cases for Electrical Conductors" (lines 5-7). The object of the invention is to provide a device... for surrounding the commutator of an internal combustion motor and protecting the terminals thereof and the electrical conductors connected to said terminals" (lines 12-17).
Date: July 16, 1918
Creator: Rooke, Henry L., Jr.
Partner: UNT Libraries Government Documents Department

Rail Fastener

Description: Patent for a rail fastener for concrete rail ties. It is a bolt receiver to be placed in concrete rail ties to allow the bolts to be held securely.
Date: March 16, 1911
Creator: Wessel, Frederick
Partner: UNT Libraries Government Documents Department

Oil and Gas Burner

Description: Patent for a burner that can use both oil and gas as fuel.
Date: May 16, 1922
Creator: Oney, William M.
Partner: UNT Libraries Government Documents Department

Rotary Boring Drill

Description: Patent for
Date: March 16, 1915
Creator: Hughes, Howard R.
Partner: UNT Libraries Government Documents Department

Door-Stop.

Description: Patent for a door stop, which is made of metal and attaches easily to the door.
Date: March 16, 1909
Creator: Snowden, Rene Ravenel
Partner: UNT Libraries Government Documents Department

Signal-Light.

Description: Patent for "new and useful improvements in Signal-Lights." (lines 5-6) and "relates to improvements in signaling means." (lines 8-9) including illustrations.
Date: March 16, 1920
Creator: Thomas, Theodore G.
Partner: UNT Libraries Government Documents Department

Shadowgraph.

Description: Patent for "improvements in shadowgraphs" (lines 12-13) "to afford entertainment and amusement" (lines 22-23) by means of using "a holder for pieces of which a design may be composed" (lines 31-32), including one illustration.
Date: April 16, 1918
Creator: Barler, Eugene Miles
Partner: UNT Libraries Government Documents Department

Scaffold-Jack.

Description: Patent for an adjustable scaffold jack with a platform.
Date: March 16, 1909
Creator: Schwilling, Jacob
Partner: UNT Libraries Government Documents Department

Improvement in Railroad-Switches.

Description: Patent for improvement in railroad-switches by “mounting a frog on a plate, and provided with pivoted rails or rail-sections, arranged for operation in connection with fixed rail-sections upon the plate, to form a continuity with either line of main rail, and connected below the plate by pivoted bars or levers, to secure a relative action or adjustment of the pivoted or movable rail-sections, whereby a very perfect and simple frog operating to prevent break in the main line or lines is obtained… more
Date: July 16, 1872
Creator: Fitzsimmons, Henry
Partner: UNT Libraries Government Documents Department

Window Mounting

Description: Patent for window mountings that allows the window to open both vertically and horizontally.
Date: November 16, 1915
Creator: Bast, Joseph
Partner: UNT Libraries Government Documents Department

Double-Screw Swivel Lifting-Jack.

Description: Patent for an improved double screw swivel lifting jack, including illustrations.
Date: January 16, 1906
Creator: Morris, William C.
Partner: UNT Libraries Government Documents Department

Cutter

Description: Patent for a corn or feed cutter with adjustable blades.
Date: July 16, 1912
Creator: Currie, Malcolm M.
Partner: UNT Libraries Government Documents Department

Derailer.

Description: Patent for a derailer for use on railroad tracks that can be either put on a switch or directly on the rails.
Date: November 16, 1909
Creator: Farrell, John T.
Partner: UNT Libraries Government Documents Department

Glazing-Bar

Description: Patent for device to securely hold a pane of glass on roofs, skylights, etc. without the use of putty.
Date: April 16, 1901
Creator: Folse, Louis D.
Partner: UNT Libraries Government Documents Department

Fire-Alarm System.

Description: Patent for "an alarm system consisting of an electric circuit within which as thermally operated circuit closer was placed, which was adapted to sound an alarm when the circuit closer had been closed by an operation of the thermal elements of the circuit closer." (lines 78-84) including instructions and illustrations.
Date: March 16, 1915
Creator: Ammons, John B.
Partner: UNT Libraries Government Documents Department

Rotary Steam-Engine.

Description: Patent for the improvement of the rotary engine through the arrangement of passages and system of pistons for a more simple construction with little friction, including illustration.
Date: August 16, 1859
Creator: Montjoy, George J. & Sawyer, J. B.
Partner: UNT Libraries Government Documents Department
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