US Patent: 219,942
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| Improvement in Carpenters' Gages
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Patentee:
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| Alban Heiran (exact or similar names) - San Leandro, CA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jun. 05, 1879 |
| Granted: |
Sep. 23, 1879 |
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Ralph Brendler
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Description: |
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This patent covers a circular marking attachment for gages. It is
a fairly simple idea, but it works quite well. It uses a pair of
rollers attached to opposite edges of the face, allowing the gage
to easily follow any convex or concave curve.
It is interesting to note that Mr. Heiran patented the rollers
themselves, and not their layout. This allowed Stanley to come
along a few years later and patent the same basic idea (334,308
- 1/12/1886), only using solid bumps rather than rollers.
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