US Patent: 98,180
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Method of Heading Screws
Split Saw Nut
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Patentee:
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| David T. Munger (exact or similar names) - Waterbury, CT |
| USPTO Classifications: |
| 470/6 |
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Patent Dates:
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| Granted: |
Dec. 21, 1869 |
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Patent Pictures:
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Russ Allen.
"Vintage Machinery" entry for Peter Gerlach & Co.
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Description: |
| Construction differs from Washborne's patent in that formation is by using a preforated disk with the shank passing thru and then upset to secure the head and shank. This patent marking is reported on several manufacturer's saw medallions and it is likely that they made the nuts under license of the patent holders. |
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