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Nut-Lock.
Patent for "nut-locks especially adapted for use in securing nuts upon bolts at the joints of railway-rails." (Lines 10-12) Includes instructions and illustrations.
Date:
April 13, 1897
Creator:
Dodson, Roy
System:
The Portal to Texas History
Process of Solidifying Mortar and Concrete Formations
Patent for a process for making stone structures such as blocks, walls, slabs, etc.
Date:
April 13, 1909
Creator:
Stubbs, Robert C.
System:
The Portal to Texas History
Cotton-Picking Machine
Patent for improvements to a cotton picking machine complete with illustrations
Date:
April 13, 1915
Creator:
Meier, John
System:
The Portal to Texas History