Drill
Description:
Patent for a drill and reamer for the use of drilling deep wells. "This invention consists of a tool combining a drill-point and a reamer, the point penetrating the formation and the reamer following and rendering the sides of the bore smooth and in conjunction with the body directing the drill in a straight or true course" (lines 5-10). Illustrations included.
Date:
September 8, 1903
Creator:
Higgins, Pattillo
Item Type:
Refine your search to only
Patent