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Valve-Spring Lifter.

Description: Patent for valve spring lifter designed for use with internal combustion engines that holds the intake or exhaust valve springs in an elevated or rigid position. Illustrations included.
Date: June 18, 1918
Creator: Mountain, Thomas O.
Partner: UNT Libraries Government Documents Department

Furnace.

Description: Patent for a furnace used in steel making operations to "enable...uniform heating and the dissipation of the black spots" created on some heated materials during the heating process by means of a "lifting means or moveable hearth."
Date: May 18, 1915
Creator: Moore, Ralph S
Partner: UNT Libraries Government Documents Department

Process and Apparatus for Separation of Ores by Flotation.

Description: Patent for a improved process and apparatus use commercially to separate ores using flotation. By "introducing a novel step in the flotation process which results in the complete breaking down of the froth and at the same time keeping the volume of water used within the smallest practical limits thus preventing the washing away of valuable concentrates by an unnecessarily large volume of water" (lines 54-60).
Date: April 18, 1916
Creator: Thompson, W. Albert & Cole, David
Partner: UNT Libraries Government Documents Department

Wind-Motor

Description: Patent for a powerful motor for wind mills.
Date: February 18, 1919
Creator: Connolly, James H.
Partner: UNT Libraries Government Documents Department

Flying Machine

Description: Patent for a new type of flying machine.
Date: February 18, 1919
Creator: Critchett, J. C.
Partner: UNT Libraries Government Documents Department

Fiber-Cleaning Machine

Description: Patent for a machine for decorticating plants and cleaning the pulp from the fibers. Illustrations included.
Date: July 18, 1911
Creator: Vaughan, Henry L.
Partner: UNT Libraries Government Documents Department

Adjustable Support.

Description: Patent for adjustable props or supports used in concrete construction or scaffolding, including illustrations.
Date: June 18, 1918
Creator: Ware, Howard T.
Partner: UNT Libraries Government Documents Department
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