Clamp (open access)

Clamp

Patent for a clamp. This device is employed to use a hoisting line attached to well casing or tubing. Illustration included.
Date: November 22, 1910
Creator: Athey, Earl
System: The Portal to Texas History
Pipe-Wrench (open access)

Pipe-Wrench

Patent for a pipe wrench. Illustrations included.
Date: September 20, 1910
Creator: Tiner, John Francis
System: The Portal to Texas History