US Patent: 53,961
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| Ruler
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Patentee:
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| R. N. Eagle (exact or similar names) - Washington, DC |
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Patent Dates:
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| Granted: |
Apr. 17, 1866 |
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Ralph Brendler
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Description: |
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This is a simple patent covering insetting a small strip of metal into
the edge of a wooden ruler, to provide a sturdier edge. It also has the
benefit of being slightly off the paper, so that ink will not bleed under
it when used as a straightedge.
It is a simple design, but works well, and is still widely used nearly
150 years later.
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