US Patent: 465,664
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Rule
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Patentee:
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Michael Hogarty (exact or similar names) - Salisbury, CT |
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Patent Dates:
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Applied: |
Jun. 27, 1891 |
Granted: |
Dec. 22, 1891 |
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Russ Allen.
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Description: |
Laminated construction for rules. Specifically mentions ivory and the use of wooden core to overcome problems with bound ivory rules.
Patent date seen on boxwood rules marked Chapin-Stephens (No 62) and H. Chapin's Son (No 14).
However, the marked boxwood rules seen to date do not appear to use laminated construction and rightfully should not be marked.
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