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in place name: "United States - Texas - Harris County - Humble"  
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Sample-Taking Device.

Description: Patent for device which takes samples as the drill bit bores through the earth while drilling wells. The samples are used to determine presence or absence of oil and other minerals.
Date: August 7, 1917
Creator: Dodds, Redus D.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Elevator

Description: Patent for a new and improved elevator that has “a locking device for securing the jaws of the elevator around the pipe to be lifted” (lines 11-13), including illustrations.
Date: March 7, 1916
Creator: Simmons, Wise F. & Levy, Christin W.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Casing-Head

Description: Patent for a casing head that is specially adapted for "use in connection with well drilling for letting the tubing down into the bore, and in withdrawing the tubing from the bore." (Lines 15-16), including illustrations.
Date: September 7, 1920
Creator: McGarry, Henry S. & Carr, John D.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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