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Wrench for Rotary Well-Drills.

Description: Patent for a wrench designed to assist in working with rotary well drills. The wrench is adapted for unscrewing the coupling that attaches a drill point to a pipe section, as well as for detaching the pipe sections from one another. The advantage of the wrench is in allowing convenient detachment of the parts of a well drill quickly and efficiently.
Date: October 21, 1913
Creator: Lebus, George Franklin
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Well-Drill Wrench

Description: Patent for a wrench for drill pipes used in drilling wells. Illustrations included.
Date: February 18, 1913
Creator: Osborne, William Rush & Lebus, George Franklin
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Internal Pipe-Gripper

Description: Patent for "new and useful Improvements in Internal Pipe-Grippers" (lines 6-7) such as "an improved tool for removing pipes or casings from drilled wells (lines 14-15) including instructions and illustrations.
Date: August 5, 1913
Creator: McConnell, Scott R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Under-Drilling Bit.

Description: Patent for improvements in the design of under drilling bits in order to "reduce labor, time and expense of drilling" and "to permit the drilling of a more perfect hole" (lines 25-27), including illustrations and a description of the design.
Date: July 15, 1913
Creator: English, Harry White
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Underreamer.

Description: Patent for an underreamer with improved construction and increased operating efficiency; including illustrations.
Date: December 9, 1913
Creator: Wagner, Warren
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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