Resource Type

Improvement in Machines for Destroying Insects. (open access)

Improvement in Machines for Destroying Insects.

Patent for "new and useful improvements in insect destroyers and more particularly to that class especially adapted to the extermination of boll-weevils" (lines 9-12) including instructions and illustrations.
Date: December 29, 1914
Creator: Nail, Louis L.
System: The Portal to Texas History
Railroad-Switch (open access)

Railroad-Switch

Patent for a railroad switch that is easier to use and more effective than the "common stub switch" (lines 10-11), thereby reducing damage.
Date: December 16, 1919
Creator: Cuellar, Samuel D.
System: The Portal to Texas History
Railway Construction. (open access)

Railway Construction.

Patent for "new and useful improvements in Railway Constructions" (lines 6-7) including instructions and illustrations.
Date: December 5, 1916
Creator: Oliver, Lavan; Oliver, Tilden B. & West, Gorge W.
System: The Portal to Texas History