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Wrench for Rotary Well-Drills.

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: Patent

Partner: UNT Libraries Government Documents Department

Elevator-Wrench

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