US Patent: 563,217 - Ore-feeder for stamp-mills


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US Patent: 563,217

Ore-feeder for stamp-mills

Patentee:

Henry Bolthoff (exact or similar names) - Denver, CO

USPTO Classifications:

241/271

Tool Categories:

specialty machines : ore processing apparatus

Assignees:

None

Manufacturer:

Hendrie & Bolthoff Manufacturing & Supply CO. - Denver, CO

Witnesses:

Alfred J. O'Brien

Charles E. Dawson

Patent Dates:
Applied:	Apr. 27, 1895
Granted:	Jun. 30, 1896

Patent Pictures:

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Vintage Machinery entry for Hendrie & Bolthoff Mfg. & Supply Co.

Description:

Seen in an 1898 Hendrie & Bolthoff catalog, "The Bolthoff Improved Challenge ore feeder. A revolving disk feeder without gears or clutches. Feed controlled by a band friction. Built for both Stamp and Huntington Mills."