US Patent: 3,498,624 
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| Chuck device
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	        Patentees:
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 | Earl J. Hammond (exact or similar names) - Frankenmuth, MI |  
| Roland G. Koch (exact or similar names) - Frankenmuth, MI |  
 
 
 
 
 
 
 
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        Patent Dates:
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| Applied: | 
Sep. 21, 1967 | 
 
| Granted: | 
Mar. 03, 1970 | 
 
 
 
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                        Jeff Joslin Vintage Machinery entry for Universal Engineering Co. 
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        Description: |  
| This chuck can have the bit or tool changed without stopping the spindle without having the operator touch a rotating part. |  
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