US Patent: 5,438X
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| Composition to Be Used in the Fusion, Refining, or Working of Metals or Ores
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Patentees:
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| Henry B. Chew (exact or similar names) - Baltimore, MD |
| E. V. Freeman (exact or similar names) - Baltimore, MD |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Apr. 07, 1829 |
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Joel Havens
X-Patents
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Description: |
| Most of the patents prior to 1836 were lost in the Dec. 1836 fire. Only about 2,000 of the almost 10,000 documents were recovered. Little is known about this patent. There are no patent drawings available. This patent is in the database for reference only.
“The mode of refining metals, proposed by the patentees, is, the use of a flux, into the composition of which gum copal and several saline ingredients enter. To us the composition appears to be altogether inartificial; and as the salts used are incompatible, or such as must decompose each other, a flux might readily be made of articles apparently very different from these, whilst they would be essentially the same.
It is averred, that experience has shown that the advantages resulting from the use of this composition, in fusing, refining, forging, and welding, are very considerable; and if this be the fact, our theory must stand in the background. Without permission from the patentees, we do not publish their process.”
Journal of the Franklin Institute Vol. 4, Jul. 1829 pg. 51
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