US Patent: 419,703
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| Spirit Level for Bit Braces
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Patentee:
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| Joseph McLaughlin (exact or similar names) - Erving, MA |
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Patent Dates:
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| Applied: |
Nov. 13, 1889 |
| Granted: |
Jan. 21, 1890 |
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Russ Allen.
"Vintage Machinery" entry for Millers Falls Co.
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Description: |
| Spirit level in the head of a brace bit with two bubble for both level and plumb.
Millers Falls appears to have purchased this patent and utilized it on their breast drill line without the mounting of the level in the handle. They instead utilized a single spirit vial mounted on the frame with some of their breast drill models. |
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