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:
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Partner:
UNT Libraries Government Documents Department