Resource Type
Counties
1 Matching Results
Results open in a new window/tab.
Results:
1 - 1 of
1
Wrench.
Patent for a wrench with a head having a pair of rigid jaws to engage the object. One unique use of this wrench is that it can tighten any threaded joint beyond the degree of tightness that can be obtained by pulling the handle of an ordinary wrench in the usual manner.
Date:
July 19, 1921
Creator:
Duda, Oswald
System:
The Portal to Texas History