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Oil Well Strainer

Description: Patent for an oil well strainer that increases the surface area of the inlet, and also provide protection to the person straining.
Date: October 24, 1916
Creator: Hardin, Otis & Daniels, Veerin B.
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
Partner: UNT Libraries Government Documents Department

Revolving Plow.

Description: Patent for a new and improved revolving plow. This design calls for a cylinder with blades attached radially for "cutting up, breaking, and turning over the soil or turf, in which the cutter blades are freed automatically" (lines 7-10). This plow cuts up, breaks, and turns over earth faster than previous designs.
Date: October 31, 1882
Creator: Hurd, Judson B.
Partner: UNT Libraries Government Documents Department
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