Counties
3 Matching Results
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Chuck.
Patent for chucks that secure pipes, preventing movement when being cut or threaded, including illustrations.
Date:
December 27, 1921
Creator:
Castanie, William
System:
The Portal to Texas History
Power-Hammer.
Patent for a power hammer that can utilize any power source and only needs one person to operate it. The design also uses less parts, making it more affordable.
Date:
December 13, 1921
Creator:
Karlson, Eric Fritjof
System:
The Portal to Texas History
Vehicle-Wheel.
Patent for an improved vehicle wheel with a demountable tire rim, so that tires can be easily placed on and taken off the wheel.
Date:
December 27, 1921
Creator:
Larson, Christian H.
System:
The Portal to Texas History