Well Drill.
Description:
Patent for a new and improved well drill. This design "consists in a novel construction of a tool for boring or drilling wells, which tool has the drill-bit and the reamer so united as to operate simultaneously, and thus serve the functions of the so-called "Z-bit" and effectually prevent the tool from being thrown laterally out of the line of cutting when striking bowlders; and the invention also consists in an improved construction of the coupling of the tool to the sinker-bar or drill-bar" (…
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Date:
July 17, 1888
Creator:
Titus, Silas W. & Clark, Chester C.
Partner:
UNT Libraries Government Documents Department