US Patent: 3,122,932
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| Machine tool
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Patentee:
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| John F. Kopczynski (exact or similar names) - North Tonawanda, NY |
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Patent Dates:
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| Applied: |
Aug. 17, 1960 |
| Granted: |
Mar. 03, 1964 |
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Jeff Joslin
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Description: |
| Seen on a Model 500M spin roll from St. Mary Mfg. Corp."This invention relates to machine tools, and more particularly to those which are used to center, hold and rotate at high speed a driven member which can be the object to be operated upon, or which can be a tool, or the older for a tool, such as a grinding wheel." |
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