US Patent: 1,822,428 
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| Wrench
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	        Patentee:
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 | John Zilliox (exact or similar names) - Orchard Park, Erie County, NY |  
 
 
 
 
 
| Manufacturer: |  
| Not known to have been produced |  
 
 
 
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        Patent Dates:
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| Applied: | 
Apr. 30, 1930 | 
 
| Granted: | 
Sep. 08, 1931 | 
 
 
 
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		  Patent Pictures:
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John Zilliox patent Sept. 8, 1931  |  
 
USPTO (New site tip) Google Patents 
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                        Stan Schulz 
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        Description: |  
| Separable machine wrench heads for a handle. The handle has a square stud and a  shoulder with a spring / ball retainer that presses on the outside of the connector part of the wrench heads. The wrench heads can be thought of as a type of "crow's foot" with eight-point openings for insertion of the square stud on the handle, and flat faces corresponding to the shoulder with the spring / ball retainer.  
This patent was an improvement of patent #1,764,379. 
John Zilliox worked for Park Metalware Co. of Orchard Park, NY. |  
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