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Cotton-Pest-Destroying Machine
Patent for a machine that destroys boll weevils and other agricultural pests. It distributes moisture and poisonous powder that adheres to plants.
Date:
June 21, 1921
Creator:
Saladiner, Joseph M.
System:
The Portal to Texas History
Portable Electric Saw.
Patent for improvement of portable electric saws that can be used "as readily and accurately as a hand saw in performing many different grades of work much more rapidly and with less physical exertion" (lines 17-20), including illustrations.
Date:
June 7, 1921
Creator:
Lange, David C.
System:
The Portal to Texas History