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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
Partner: UNT Libraries Government Documents Department

Spring Wheel

Description: Patent for improvements on spring wheels especially those adapted for motor vehicles.
Date: November 22, 1911
Creator: Coble, Ernest L.
Partner: UNT Libraries Government Documents Department

Penholder.

Description: Patent for a wooden holder for pen-points. The holder is designed to be constructed cheaply and permit the neat and clean insertion and removal of pen-points.
Date: October 13, 1903
Creator: Estes, John W.
Partner: UNT Libraries Government Documents Department

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
Partner: UNT Libraries Government Documents Department

Pipe-Tongs.

Description: Patent for improvement upon the use of chain tongs. The invention "permits the application of a very strong rotative force" (lines 11-12), "produce rotation of a pipe in either direction" (lines 17-18), and "provides a chain tong which will not crush the pipe..." (lines 22-23).
Date: May 12, 1914
Creator: McLeod, Rueben A., of Electra, Texas.
Partner: UNT Libraries Government Documents Department

Elevator-Wrench

Description: Patent for an improvement in elevator wrenches. The device is meant to be used with rotary drilling machines for "supporting the drilling the drill pipe and for holding it from rotation during the releasing of the several joins of the pipe when it is necessary to withdraw the drill from the well hole."
Date: October 13, 1914
Creator: Lebus, George Franklin
Partner: UNT Libraries Government Documents Department