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31 Matching Results
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31
Engraver's Tool
Patent for a tool for engraving small objects. Illustrations included.
Date:
April 18, 1911
Creator:
Mueller, Eduard Fredrick
System:
The Portal to Texas History
Harrow-Cultivator Attachment
Patent for a harrow attachment for cultivators. Illustrations included.
Date:
July 30, 1912
Creator:
Kovar, William L. & Wlha, William
System:
The Portal to Texas History
Kitchen-Sink
Patent for a kitchen sink. Illustrations included.
Date:
October 8, 1912
Creator:
Ogle, Thomas Scott & Polansky, Robert F.
System:
The Portal to Texas History
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
Shovel-Plow.
Patent for the improvement of the shovel plow. The improvement of the shovel plow allows for the adjustment of the plow height as needed.
Date:
February 17, 1920
Creator:
Urban, John
System:
The Portal to Texas History
Wire Stretcher
Patent for a device that improves "wire-stretchers, but also adapted to be used for other purposes" (lines 15-19) including instructions and illustrations.
Date:
October 2, 1900
Creator:
Calhoun, Albert C.
System:
The Portal to Texas History