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in creator/contributor: "Stone, Jesse R."  
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Tread for Pneumatic Tires.

Description: Patent for an improvement in treads for pneumatic tires "to prevent excessive wear or puncture of the parts of the tire constituting the tread portion" (lines 12-14).
Date: September 30, 1919
Creator: Twombly, Royal W.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Heater.

Description: Patent for a heater, "designed for use in orchards for raising the temperature of the atmosphere at times when frosts or freezing temperature is threatened" (lines 11-14). Illustration included.
Date: November 18, 1919
Creator: Briscoe, Williard H.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Pipe-Wrench.

Description: Patent for the improvement of pipe wrenches necessary for use in well drilling or other circumstances where a wrench of strong construction is needed. This patent provides for a pipe wrench that can be easily adjusted to fit pipes of differing sizes and is easily manipulated for use regardless of direction.
Date: December 9, 1919
Creator: Carmichael, Robert E.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Sample-Taking Device

Description: Patent for a sample taking device "for use in preserving the log of the well in drilling operations in earth, rock or other similar formations." (lines 12-14). Specially adapted for use in drilling wells for oil and sulfur, specifically in the Gulf Coast region.
Date: December 9, 1919
Creator: Carmichael, Robert E. & Hamman, George
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Rotary Boring-Drill.

Description: Patent for improvements in rotary boring drills. The invention provides a fluted drill collar for a drill bit designed to "break up the rock and other material tending to wedge in around the upper part of the head" (lines 19-21). The drill collar forms "a connection between the main rotary drill shaft and the drill bit" (lines 13-15).
Date: January 28, 1919
Creator: Hughes, Howard R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Sample Taking Device.

Description: Patent for a device that takes samples of the strata or formation through which a well is being drilled without mixing the soil with water within the reservoir.
Date: September 19, 1919
Creator: Rembert, William E.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Cross-Roller Drill-Bit

Description: Patent for an improvement upon a prior patent for a rolling drill cutter. The drill bit is designed with several rotating saw like structures which assist in the drilling process.
Date: December 27, 1919
Creator: Hughes, Howard R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Apparatus for Sulfur Mining

Description: Patent for "new and useful improvement" for sulfur mining by Mr. Robert Carmichael. This device has particular application for mining in subterranean environments, "by use of pumping a heated fluid down into contact with a sulfur strata" (lines 14-15).
Date: December 9, 1919
Creator: Carmichael, Robert E.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Core-Barrel.

Description: Patent for a core barrel for use in rotary drilling of oil or water wells, that will allow for easy extraction of the upwardly extending column of material.
Date: October 14, 1919
Creator: Humason, Granville A. & Childs, William L.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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