| US Patent: 2,746,758 
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| Chucks | 
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| Patentees: |  
 | Arthur M. Stoner (exact or similar names) - Madison, New Haven County, CT |  | Girard S. Haviland (exact or similar names) - Wethersfield, Hartford County, CT |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | May 07, 1953 |  
| Granted: | May 22, 1956 |  USPTO (New site tip)
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                        Joel Havens
 "Vintage Machinery" entry for Jacobs Manufacturing Co.
 
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| Description: |  | This patent is an evolution of the Rubber-Flex collet system that reduces friction in that system by adding long metal fingers to engage the jaws of the collet. |  |