US Patent: 3,882,582
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| Adjustable Bit Holder
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Patentee:
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| Thurston V. Williams (exact or similar names) - Wilton, Hillsborough County, NH |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Apr. 18, 1973 |
| Granted: |
May 13, 1975 |
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Joel Havens
"Vintage Machinery" entry for O.K. Tool Co., Inc.
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Description: |
| Abstract:
A rotary insert bit tool holder has a peripheral recess in which the bit is clamped with a wedge and a lock screw directed inwardly of the recess forcing the wedge frictionally apart against one side of the recess. A lifting jack engages under the bit and is adjusted outwardly of the recess by a screw threaded through the jack and against the bottom of the recess. |
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