US Patent: 151,167
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| Improvement in Tempering Ovens for Steel and Iron
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Patentee:
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| George F. Simonds (exact or similar names) - Fitchburg, MA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
May 19, 1874 |
| Reissue Information: |
| Reissued as RE7,464 (Jan. 16, 1877) |
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Russ Allen.
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Description: |
| Claims even distribution of heat utilizing an intervening preforated plate between the fire and clamps as well as patenting the general construction method of utilizing passages, a hot air chamber, and tiles to further distribute the heat. George Simonds references this patent in his application for Patent No. 169,736. Additionally, this appears to be an improvement over Patent No. 150,625 which uses clamps to prevent warping of the circular saw blade. |
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