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Wrench
Patent for an improved wrench wherein various shaped and sized heads can be quickly and easily put on and taken off. This allows for the wrench to be used with nuts of varying shapes and sizes.
Date:
May 9, 1916
Creator:
Davis, George W. & Davis, George W.
System:
The Portal to Texas History
Loading and Unloading Mechanism for Mixing-Drums or Other Receptacles
Patent for improving the regulating of asphalt and concrete mixers.
Date:
May 27, 1913
Creator:
Hahn, William Berton
System:
The Portal to Texas History
D-Handle Machine.
Patent for a new machine for automating the production of D-handles, which will operate continuously, set the workflow pace, and form a smooth inner rounded part of the grip.
Date:
May 12, 1914
Creator:
Johnson, Raymond F.
System:
The Portal to Texas History