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4 Matching Results
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Clevis Attachment for Plows.
Patent for an agricultural plow attachment that allows for more precision concerning the measurement of depth of the plow point against different types of terrain/soil conditions.
Date:
February 13, 1920
Creator:
Wolter, Fred W.
System:
The Portal to Texas History
Cultivator.
Patent for a riding cultivator that keeps the shovel gangs positioned "parallel with the line of the draft, or with the longitudinal axis of the machine" (lines 19-21), by shifting them in the direction that the driver guides the wheels. The cultivator also provides a means to keep the depth of cultivation as uniform as possible when working on uneven ground or in different kinds of soil.
Date:
January 3, 1922
Creator:
Mayer, Henry A.
System:
The Portal to Texas History
Insecticide for Boll-Weevils.
Patent for boll-weevil insecticide with novel method of compounding. Arsenic and baking soda are combined with wood ash to create a dust which kills the insects as an inhalent instead of needing to be consumed by the insects in order to be effective.
Date:
November 1, 1921
Creator:
Koenig, Philipp
System:
The Portal to Texas History
Typewriter-Desk.
Patent for typewriter desk which has a compartment with a moveable platform. The platform supports a typewriter, and is "capable of being raised and lowered within the desk so as to position the typewriter for use or non-use as desired". The compartment has a lid, which when in closed position, provides an even writing or resting surface.
Date:
April 26, 1921
Creator:
Beard, Margurite E.
System:
The Portal to Texas History