US Patent: 477,104
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Caliper Rule
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Patentee:
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Samuel Darling (exact or similar names) - Providence, RI |
Manufacturer: |
Not known to have been produced |
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Patent Dates:
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Applied: |
Oct. 06, 1891 |
Granted: |
Jun. 14, 1892 |
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Russ Allen.
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Description: |
A cam is used to fasten the slide in place.
One of three patents (others being 477105 and 477183 ) Samuel Darling applied for on October 6, 1891 and received on June 14, 1892.
Patent 477183 appears to be the one applied and manufactured by Darling, Brown and Sharp of Providence, RI |
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