Resource Type
Counties
3 Matching Results
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Bolt Lock
Patent for an improved bolt block that maintains a bolt effectively against axial rotation.
Date:
March 23, 1915
Creator:
Robinson, Robert John, Sr.
System:
The Portal to Texas History
Sweep Stock Attachment
Patent for a plow attachment which allows for more control in regard to how deep the plow digs.
Date:
March 15, 1916
Creator:
Polasek, John
System:
The Portal to Texas History
Cultivator
Patent for a cultivator designed to "regulate the pitch at which the sweep blades enter the ground" (lines 13-15). Illustrations included.
Date:
March 22, 1910
Creator:
Hewitt, John Henry
System:
The Portal to Texas History