Bascule-Bridge (open access)

Bascule-Bridge

Patent for improvements in draw bridges, such as a shiftable weight and supporting guide, particularly for bridges of the rocking bascule type, with illustrations.
Date: February 15, 1915
Creator: McKibben, Columbus
System: The Portal to Texas History
Grub-Plow. (open access)

Grub-Plow.

Patent for a grub plow with a better cutter, which can be adjusted to different depths of soil.
Date: August 15, 1911
Creator: Gardner, Eli J. & Odem, David
System: The Portal to Texas History