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Well-Drill Wrench.

Description: Patent for a well drill wrench that improves upon William Ellinger's patent 1,327,379, issued January 6, 1920. This improvement eliminates friction between the rotatable and stationary parts of the wrench and ensures that the rotatable part is fully supported during its entire rotation, "as when screwing or unscrewing the drill bit" (lines 109-110).
Date: November 15, 1921
Creator: Ellinger, William H.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Well-Drill Wrench

Description: Patent for a wrench for drill pipes used in drilling wells. Illustrations included.
Date: February 18, 1913
Creator: Osborne, William Rush & Lebus, George Franklin
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Well Stuffing-Box.

Description: Patent for improvements on well stuffing boxes, particularly in packing the vertically reciprocating pump rod and keeping it packed over time, so that the stuffing box doesn't need to be dismantled for manual adjustments.
Date: November 16, 1915
Creator: Church, George W.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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