Collection
Serial/Series Title
Country
Counties
5 Matching Results
Results open in a new window/tab.
Results:
1 - 5 of
5
Power Transmission.
Patent for a power transmission that has a gear that can provide different speeds. This transmission is a simple construction that allows for the driver to easily choose the gear, which allows high efficiency in operation.
Date:
September 16, 1919
Creator:
Cook, William A.
Object Type:
Patent
System:
The Portal to Texas History
Palo Pinto 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:
1919
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Knee-Protector.
Patent for knee protectors that provide padding for the wearer when kneeling, attached by springs that allow for comfortable movement and easy donning.
Date:
July 15, 1919
Creator:
Hooker, Rufus B.
Object Type:
Patent
System:
The Portal to Texas History
Manually-Operated Coal-Mining Machine.
Patent for manually mining coal and allows miners to cut coal close to the ground from an upright position, including illustrations.
Date:
July 8, 1919
Creator:
Jackson, Ed
Object Type:
Patent
System:
The Portal to Texas History
Peanut-Digger.
Patent for an improved peanut digger design.
Date:
April 15, 1919
Creator:
Noah, Joseph O.
Object Type:
Patent
System:
The Portal to Texas History