Ant Trap. (open access)

Ant Trap.

Patent for an in-ground ant trap that prevents the ants from escaping once caught in the trap, including instructions and illustrations
Date: September 12, 1911
Creator: Knox, Jessie Lonzo
System: The Portal to Texas History
Cultivator Attachment (open access)

Cultivator Attachment

Patent for a cultivator attachment that allows the cultivator height to be adjusted for digging. Illustrations included.
Date: January 10, 1911
Creator: Stewart, Lon Woodson
System: The Portal to Texas History
Car-Ventilating System. (open access)

Car-Ventilating System.

Patent for a railroad car ventilating system that does require opening the windows.
Date: February 14, 1911
Creator: Shanley, Michael H.
System: The Portal to Texas History