Collection
Serial/Series Title
Country
Counties
6 Matching Results
Results open in a new window/tab.
Results:
1 - 6 of
6
Carbon-Removing Tool
Patent for a new and improved carbon removing tool, which allows for the removal of carbon from the pistons of internal combustion engines. Includes illustrations.
Date:
April 12, 1921
Creator:
Slagle, Eugene H.
Object Type:
Patent
System:
The Portal to Texas History
Cleburne Sheet
Topographic map of a portion of Texas from the United States Geological Survey (USGS) project. The map includes towns, historic or notable sites, bodies of water, and other geologic features. Scale 1:125000
Date:
1921
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Dallas Sheet
Topographic map of a portion of Texas from the United States Geological Survey (USGS) project. The map includes towns, historic or notable sites, bodies of water, and other geologic features. Scale 1:125000
Date:
1927
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Spark Plug Protector.
Patent for a spark plug protector that will shield the spark plug from moisture.
Date:
March 28, 1922
Creator:
Sharp, Morrison M.
Object Type:
Patent
System:
The Portal to Texas History
Tractor-Coupling
Patent for tractor coupling. The object of the invention is to provide a coupling for tractor and plow. When a plow hits an obstruction, the coupling will automatically disengage tractor and plow without breaking any parts.
Date:
December 21, 1920
Creator:
Hart, Lawrence H.
Object Type:
Patent
System:
The Portal to Texas History
Cotton-Chopper Attachment for Cultivators.
Patent for improvements in cotton chopping attachments for cultivators that is relatively inexpensive that is highly useful in chopping and plowing cotton plan.
Date:
July 27, 1920
Creator:
Martin, William A. & Roebuck, Mathew P.
Object Type:
Patent
System:
The Portal to Texas History