Resource Type

Well-Casing Grapple (open access)

Well-Casing Grapple

Patent for a well-casing grapple, allowing a positive grip when lowering casing or pipe within a well, or withdrawing it therefrom, without the danger of slipping or accident.
Date: April 30, 1918
Creator: Artzt, Erich C.
System: The Portal to Texas History