Access
Resource Type
27 Matching Results
Results open in a new window/tab.
prev
Results:
25 - 27 of
27
Automatic Water-Supply Regulator for Windmills
Patent for automatic water supply regulator to stop flow of water at the specified level. Additionally the wind mill will start when it hits a certain water level, creating an off an on cycle.
Date:
November 6, 1917
Creator:
Pressler, Walter F.
System:
The Portal to Texas History
Clamp for Spirit-Levels.
Patent for clamps for spirit levels that allow a spirit level to be attached directly to a straight edge so that one person could safely use both the straight edge and the spirit level simultaneously. Additionally, the clamp production is simple so it can be produced at a low cost.
Date:
April 30, 1918
Creator:
Bridgman, Jesse Everet
System:
The Portal to Texas History
Combined Wheel Cultivator And Plow
Patent for improvements to a combined wheel cultivator and plow, "whereby either mold-board plows or shovel-cultivators may be used upon a common frame" (lines 16-18). Includes illustrations.
Date:
December 28, 1886
Creator:
Wahrmund, Charles, Jr.
System:
The Portal to Texas History