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US Patent: 80,837
Improvement in hub-boring machines
Patentee: Albert R. Silver (exact or similar names) - Salem, OH USPTO Classifications: 408/106 Tool Categories: metalworking machines : drilling and boring trade specific : wheelwright Assignees: Albert R. Silver - Salem, OH John Deming - Salem, OH Manufacturer: Silver & Deming - Salem, OH Witnesses: N. B. Watson E. W. Fawcett	Patent Dates: Granted: Aug. 11, 1868 Antedated: Jul. 25, 1868 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Silver & Deming Mfg. Co.
Description: This machine was written up in the 16 December 1868 issue of Scientific American.

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