Stone-Drilling Machine. (open access)

Stone-Drilling Machine.

Patent for a stone drilling tool, which has water automatically flowing through it.
Date: March 24, 1908
Creator: Weiss, Adolf
System: The Portal to Texas History
Fly-Trap (open access)

Fly-Trap

Patent for an insect trap for flies. Illustrations included.
Date: December 24, 1912
Creator: Krueger, Samuel
System: The Portal to Texas History