US Patent: 21,861
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Device for Adjusting to Right Angle Joiners' Squares
Square Adjustment
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Patentee:
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| Linus Yale, Jr. (exact or similar names) - Philadelphia, PA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Oct. 19, 1858 |
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Ralph Brendler
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Description: |
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This patent describes a new method of manufacturing squares such that
they may be easily adjusted to true. It uses a pair of set screws in
the head, which move the blade of the square.
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