US Patent: 44,225
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| Improvement in Spirit-Levels
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Patentee:
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| H. S. Shepardson (exact or similar names) - Shelburne Falls, MA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Sep. 13, 1864 |
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Ralph Brendler
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Description: |
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This patent covers an "infill" level, consisting of a cast metal frame with
wood inlaid into the sides. This will prevent the level from warping, and
make it lighter.
The patent text also mention a new kind of adjustment for he vial, but
this is not present in the claims, and so was probably rejected.
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