Resource Type
Counties
3 Matching Results
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Grader-Blade.
Patent for a new form of grader blade for road graders and ditchers for road and ditch work, with illustration.
Date:
December 4, 1917
Creator:
Wendell, Benjamin J.
System:
The Portal to Texas History
Valve.
Patent for improvement in valves, by means of assuring a tight operating stem. The stem is comprised of two movable sections incorporated into a design purposed to prevent leakage by the stem. Additional mentions include acknowledged awareness of susceptibility to change and modification, convenience and facility, and simplicity as related to cost.
Date:
December 24, 1918
Creator:
Pratt, Robert L.
System:
The Portal to Texas History
Weeder
Patent for a weeder that breaks up the ground as well as cutting weeds.
Date:
December 31, 1912
Creator:
Wind, Iver Ebbesen
System:
The Portal to Texas History