US Patent: 1,368,403
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| Knife-holder for shapers
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Patentee:
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| William M. Knourek (exact or similar names) - River Forest, IL |
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Patent Dates:
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| Applied: |
May 12, 1920 |
| Granted: |
Feb. 15, 1921 |
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Jeff Joslin
Vintage Machinery entry for Woodworkers Tool Works
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Description: |
| These have been seen in a Woodworkers Tool Works catalog as their "Knourek Patent Ball Bearing Shaper Guide Collars", which have a ball-bearing rub collar that replaces sliding contact with rolling contact. This same technology was available on their spacing rings. |
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