US Patent: 9,867
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Mounting Spirit Levels
Pocket Level
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Patentee:
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| Sylvester J. Sherman (exact or similar names) - New York, NY |
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Patent Dates:
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| Granted: |
Jul. 19, 1853 |
| Reissue Information: |
| Reissued as RE374 (Jul. 01, 1856) |
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Patent Pictures:
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Russ Allen.
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Description: |
| First patent listed for a "pocket level" typically used for attaching to framing and try squares. A spring catch is used to hold the level in place along with "bearers" which establish the horizontal plane for the level. Known examples are marked under the vial: S. J. SHERMAN, NEW YORK / PATENTED JULY 19th, 1853 and uses a set screw instead of a spring catch arrangement for securing the level. The use of of a set screw is inferred with the reissue of this patent, RE374. |
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