US Patent: 14,396
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| Improvement in Parallel Rulers
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Patentee:
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| R. Eickemeyer (exact or similar names) - Yonkers, NY |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Mar. 11, 1856 |
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Ralph Brendler
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Description: |
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This ruler/triangle uses a complicated spring-loaded cam mechanism to
move the rule a specific distance when depressed. From reading the
claims I can't quite figure out how it works, but it is certainly a
complex way of accomplishing this relatively simple task.
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