Expansive and Contractive Well-Drill (open access)

Expansive and Contractive Well-Drill

Patent for improvements for expansive and contractive well drill involving improvements to drill bits.
Date: July 2, 1918
Creator: Carter, Oscar Martin
System: The Portal to Texas History
Garment-Protector. (open access)

Garment-Protector.

Patent for an easily detachable garment protector "for use with trousers and overalls to protect them from wear and from becoming soiled while in use" (lines 10-13) including illustration.
Date: July 2, 1918
Creator: Spencer, William Levi
System: The Portal to Texas History