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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" (… more
Date: July 17, 1888
Creator: Titus, Silas W. & Clark, Chester C.
Partner: UNT Libraries Government Documents Department

Self-Registering Target

Description: Patent for "new and useful improvements in self-registering targets, whereby the shots are plainly indicated, the parts are readily returned to their normal position after the shot is fired, and the whole combining simplicity, cheapness, and durability" (lines 13-18).
Date: April 17, 1888
Creator: Wright, Walter K. & Brown, William H.
Partner: UNT Libraries Government Documents Department

Railroad Joint

Description: Patent for a railroad joint. Illustration included.
Date: August 17, 1909
Creator: Coupland, David B.
Partner: UNT Libraries Government Documents Department
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