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Wheeled Sectional Harrow.
Patent for an improved wheeled section harrow with a simple construction that provides a way to raise and lower the harrow sections as needed, and improves construction of the truck carrying the harrow.
Date:
July 9, 1918
Creator:
Mize, William H.
System:
The Portal to Texas History
Whiffletree
Patent for a whiffletree that equalizes the draft pressure on the beam.
Date:
July 2, 1912
Creator:
Sledge, Henry B.
System:
The Portal to Texas History
Device for Making Vessels Invisible.
Patent for improvements in "air and water craft" (line 13) invisible including illustrations. These improvements include invisibility through "plurality of plates or sections" (lines 18-19) and diffuse light, disguising the vessels.
Date:
July 15, 1919
Creator:
Chaddick, Mark
System:
The Portal to Texas History