US Patent: 261,297
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| Mortar for stamp-mills
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Patentee:
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| Henry Bolthoff (exact or similar names) - Central City, CO |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Mar. 21, 1882 |
| Granted: |
Jul. 18, 1882 |
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Patent Pictures:
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Jeff Joslin
Vintage Machinery entry for Hendrie & Bolthoff Mfg. & Supply Co.
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Description: |
| A "stamp-mill" is a machine used to crush ore in mining. This patent is of interest because the assignees' company, Hendrie & Bolthoff Mfg. & Supply Co., sold woodworking machinery, and may have manufactured some such machinery as well. |
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