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Improvement in Plows
Patent for improvements in the construction of plow-beams to be attached to the front axles of a wagon.
Date:
July 6, 1869
Creator:
Cummins, A. G. & Cummins, J. R.
System:
The Portal to Texas History
Improved Mode of Preserving Meat.
Patent for a process that claims to preserve meat. The patent includes only instructions and no illustrations.
Date:
October 6, 1868
Creator:
Perl, M.
System:
The Portal to Texas History
Improvement in Oscillating Steam-Engine
Patent for improvements to steam-engines that employ oscillating cylinders for the drive-shaft.
Date:
July 6, 1869
Creator:
Richer, F. C.
System:
The Portal to Texas History