Lock. (open access)

Lock.

Patent for a screen door lock which is both rotatable and slidable.
Date: December 28, 1915
Creator: Stockburger, Charles W.
System: The Portal to Texas History
Boll-Weevil Device. (open access)

Boll-Weevil Device.

Patent for a cost-effective device that can remove and exterminate parasites from cotton as it's being harvested without damaging the cotton itself, including illustrations.
Date: December 28, 1920
Creator: Reeder, Leonard F. & Jackson, Walter B.
System: The Portal to Texas History