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Portable Extensible Ladder
Patent for a portable extendable ladder, designed for use, among other things, as a means of fire escape or observation, along with illustrations and explanations.
Date:
July 2, 1918
Creator:
Trojan, J. E.
System:
The Portal to Texas History
Apparatus for Destroying Insects.
Patent for a new and improved apparatus for killing ants. This design "consist[s] of frame, levers, pivoted arms, piston-rod, piston provided with valves and openings, air-tight iron chamber having opening pipe, furnace provided with double lid, lugs, pipe, clamp, and wedge . . . whereby the flame as well as the poisonous vapors are injected into the insect chambers" (lines 50-58).
Date:
August 2, 1881
Creator:
Gray, Hiram Balderston
System:
The Portal to Texas History