Description: Patent for a new and improved artesian-well borer. This design "has for its object to furnish a combination tool which will wear or cut the harder grades or rock frequently met with in boring wells of this class, and also to furnish a tool which will be harder than the common steel too or auger, thereby dispensing with the necessity of taking out and sharpening" (lines 13-20). It consists in "[a] fluted hemispherical mass of corundum for boring Artesian wells, said mass being provided with cutting-edges which extend from the apex to the base, [and] a metallic core embedded within the mass" (lines 16-20).
Date: April 5, 1892
Creator: Brown, Frank O.
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