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Ant-Trap.
Patent for a new type of ant trap that captures ants by having them crawl up a wooden central chamber and then fall into a sheer metal pit. Includes illustrations.
Date:
December 8, 1891
Creator:
Walker, Stephen A.
System:
The Portal to Texas History
Plow.
Patent for improvements in plow in which the plow can perform a variety of purposes and to obviate the necessity of employing more than one plow for accomplishing the same. The plow can be adjusted to run either on shallow or deep ground. Illustration is included.
Date:
December 8, 1903
Creator:
Campbell, John Daniel
System:
The Portal to Texas History