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Trailer.
Patent for improved construction and arrangement of trailers. This improvement will allow an easy turning movement where a number of trailers are connected while admitting of strain between the various trailers when they are turning a corner or going around a curve.
Date:
August 20, 1918
Creator:
Watkins, Leigh
System:
The Portal to Texas History
Extracting Metals from Ores
Patent for the extraction of metals from ores by developing an improvement to the cynid process.
Date:
August 20, 1918
Creator:
Biesel, C.
System:
The Portal to Texas History
Continuous Vacuum Dehydrator.
Patent for improvements in speed, cheapness, and more efficiency in continuous-vacuum dehydration and filtering for the purpose of extracting valuable ores with water including instructions and illustrations.
Date:
August 20, 1918
Creator:
Biesel, Charles
System:
The Portal to Texas History