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US Patent: 244,240
Ore-amalgamator
Patentee: William H. Howland (exact or similar names) - San Francisco, CA USPTO Classifications: 209/191 Tool Categories: specialty machines : ore processing apparatus Assignees: None Manufacturer: Howland, Angell & King - San Francisco, CA Witnesses: C. Sedgwick George D. Walker	Patent Dates: Applied: Jan. 03, 1881 Granted: Jul. 12, 1881 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Howland, Angell & King
Description: This machine mixes mercury into the ore slurry for separating out gold.

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