1 Matching Results
Results open in a new window/tab.
Results:
1 - 1 of
1
Wrench.
Patent for a nut-wrench capable of tightening different sized nuts. The lower jaw of the wrench has different levels, the overall effect being that of a staircase, while the upper jaw is flat with a bite that holds the nuts in place.
Date:
December 15, 1896
Creator:
Tiner, John F.
System:
The Portal to Texas History