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Improvement in Coffee-Mills.
Patent for an improvement to upright coffee-mills, "whereby the bearings are always maintained in their true relative positions, while the strain on the two is made automatically counteracting, and each part of the shell firmly and effectually supported by the other." (Lines 10-14) Includes instructions and illustrations.
Date:
August 16, 1870
Creator:
Richer, Francois Charles
System:
The Portal to Texas History