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Standing-Valve Structure.

Description: Patent for a standing valve structure "which serves as a coupling between the working barrel (of a pump) and strainer member, to effectively exclude foreign matter" (lines 16-19) including instructions and illustrations.
Date: May 7, 1918
Creator: Ewing, Samuel D.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Bending-Machine.

Description: Patent for a new machine providing "a simple, efficient and easily operated fluid-pressure actuated machine" for the straightening of railway rails (lines 12-14)
Date: November 5, 1918
Creator: Keely, William
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Casing Head

Description: Patent for a Case-Head. This case-head is used in oil wells. Its purpose is to ensure a tight seal around a pipe so that gas can flow properly through the tube.
Date: August 10, 1918
Creator: Kinzbach, Frank
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Pipe-Puller

Description: Patent for improvements in pipe pullers, mechanisms for use with pipe casings for wells and the pulling of pipe and better gripping jaws.
Date: October 8, 1918
Creator: Robichaux, Sosthene
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Stand-Value for Oil-Well Pumps.

Description: Patent for a Stand-Value for Oil-Well Pumps so that the ball seat in an oil well pump does not work loose. This is also meant to be turned end for end so that the part's life is lengthened. With this being done, the utility of the oil-pump should now be enhanced.
Date: September 24, 1918
Creator: Slaughter, George W., Jr.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Sectional Link.

Description: Patent for a sectional link that has been designed for the use on oil well drilling tools. It is designed to prevent bending of the link and from throwing it out of alignment which can damage the tools it is designed for.
Date: November 5, 1918
Creator: Thomson, John M.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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