US Patent: 1,282,018
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| Valve Grinder
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Patentee:
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| Frans O. Albertson (exact or similar names) - Sioux City, IA |
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Patent Dates:
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| Applied: |
Sep. 20, 1917 |
| Granted: |
Oct. 22, 1918 |
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Patent Pictures:
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Frans O. Albertson patent Oct. 22, 1918 |
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Stan Schulz
LITTLE SIOUX valve tool set ( from 1919 POPULAR MECHANICS )
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Description: |
| The patent deals with internal details of construction of valve grinders with "progressively advancing oscillatory driven members." The internal gears are stamped parts.
The grinder using this patent was marketed as the "SIOUX," produced by Albertson & Co., Sioux City, Iowa. Advertising for the grinder and related tools included four patent dates: April 13, 1909 (pat. 918,049), May 21, 1912 (pat. RE13,421), this patent, and April 26, 1919 [sic] (pat. 1,301,891). The last patent is the valve refacer in the set. |
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