US Patent: 325,505
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| Scratch-Gage
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Patentee:
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| David Star Conrad (exact or similar names) - Waynesborough, PA |
| USPTO Classifications: |
| 33/42 |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jun. 23, 1885 |
| Granted: |
Sep. 01, 1885 |
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Ralph Brendler
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Description: |
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This is a machinists scratch gage which uses a compression
fitting for locking the head. It is quite similar to the earlier
J.E. Sherman patent (290807), but rather than pushing the
jam-nut into a conical hole, this design pulls a split
compression fitting through a tapered hole in the head.
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