Resource Type

Combination Fence and Repair Tool (open access)

Combination Fence and Repair Tool

Patent for a multi-purpose tool related to working with wires in and around the home. It is intended to tighten, twist, and/or sever a wire.
Date: September 6, 1917
Creator: Grogan, Edward W.
System: The Portal to Texas History
Underreamer (open access)

Underreamer

Patent for an under-reamer for use in drilling oil wells.
Date: September 10, 1912
Creator: Wagner, Warren
System: The Portal to Texas History
Shut-Off Head for Casings and The Like (open access)

Shut-Off Head for Casings and The Like

Patent for a shut-off head for casings in oil wells.
Date: September 10, 1912
Creator: Wagner, Warren
System: The Portal to Texas History